Administrative Changes Only
February 1, 2012
Administrative changes have been made in chapters 2 and 3.
At 2.9.3 Facility Electrical Distribution Systems, 2nd bullet:
- Added "heavy duty" before "leather gloves" at both sub-bullets.
- Replaced 'flame retardant' with 'arc-rated' at the second sub-bullet.
- Made the '2' in "8 cal/cm2" superscript.
At 2.10 Electrical Personal Protective Equipment, 7th bullet:
- Replaced 'flame retardant' with 'arc-rated.'
Administrative Changes Only
November 28, 2011
An administrative change has been made in Table 2-4, Shock Approach Boundaries, of the Electrical Safety Manual, Chapter 2 – General Safety Requirements, Section 2.4.3, Performing Activities Within the Limited Approach Boundary:
In the fourth row from the top, the fifth column at 177.8 mm (0 ft 1 in): "1 in" has been corrected to be "7 in".
"751 to 15 kV |
3.05 m (10 ft 0 in) |
1.53 m (5 ft 0 in) |
660.4 mm (2 ft 2 in) |
177.8 mm (0 ft 7 in)" |
Substantive and Administrative Changes
June 9, 2011
Substantive changes have been made in chapters 2, 3, and 4. All other changes are administrative. Sections throughout this manual have been renumbered or numbered for the first time. Linkages have been corrected and references updated. Table and figure titles, linked to their proper placement in the manual, have been added to the table of contents.
The former Section 2.3, Working On or Near Live Parts, in Chapter 2 was reconfigured as two sections—Section 2.3, Establishing an Electrically Safe Work Condition, and Section 2.4, Planning and Performing Activities Involving Exposed and Energized Electrical Conductors and Circuit Parts. Section 2.5 of Chapter 2 was moved to a new section, 3.3.3, Identification of Electrical Equipment. Section 2.8 was moved to Section 3.3.2, Safety Grounds.
In the interests of greater clarity, readability and accessibility, numerous sidebars have been created; most of them serve to focus attention on certain critical topics, especially those of a cautionary nature. Also created was a sidebar that explains how to link to industry standards on the Sandia internal network.
Substantive Changes
Chapter 2, General Safety Requirements
Section 2.1 Electrical Work Requirements – General
Added the following:
- “Place faulty equipment out of service until appropriate repairs are made. Equipment taken out of service shall be:
- Clearly marked “Out of Service”.
- Repaired or disposed of in accordance with local site requirements.
If the equipment causes a facility distribution system fault, the equipment shall be made available to facilities repair personnel to aid in determining the status of any electrical distribution system faults.”
Section 2.9.3 Facility Electrical Distribution Systems
- Added the following to the PPE requirements to operate disconnects 60 amperes or less: “leather gloves, ear plugs”.
- “Disconnects 60 amperes or less: Long sleeve shirt and pants made of untreated natural fibers (e.g., cotton), safety glasses, leather gloves, ear plugs.”
[Clearinghouse reference requirement: NFPA 70E (2009) Art. 130.7 (C)(10)]
Section 2.9.4 Modifications or Installations
“Qualified electrical workers may replace 15 and 20 amp plugs on standard 120-volt power without additional non-listed equipment inspection as follows:
- A technical work document that describes pre-and post-testing to ensure proper wiring of the plug is developed. Special care shall be taken to ensure that the integrity of the equipment and plug ground are maintained.
- An annual test is performed that includes a visual inspection. The inspection shall look for cord and plug damage, discoloration and signs of abnormal heating.
- The results of the inspection are documented and retained with the equipment in an easily accessed location.”
Section 2.10.3 Live-Line Tools
- Added to the first sentence “including shorting or hot sticks”.
- Added to the first paragraph “Shorting sticks shall not be locally fabricated. Contact Electrical Safety for information on ordering acceptable shorting sticks.”
- Added the following second and third paragraphs:
“Shorting/Grounding Sticks: Shorting sticks shall be commercially manufactured and inspected daily when in use. In accordance with the requirements of ASTM F711 (Standard Specification for Fiberglass-Reinforced Plastic Rod and Tube used in Live-Line Tools), fiberglass shorting sticks shall be dielectrically tested every two years. (See Section 3.18 of this manual.) Additionally, the grounding conductor and resistor, if installed, shall be tested with an ohmmeter for continuity between the ground connection point and the ground hook prior to use. Resistors shall be used in line when potential stored energy exceeds 1000 Joules for the soft ground required by the Energized Work Decision Tool.
Contact Electrical Safety for assistance in sizing resistors and procuring shorting sticks. Shorting sticks shall be sized such that the hand of the user remains outside the restricted approach boundary, determined by the highest anticipated voltage if the system were energized.”
Section 2.12.3 Ground Fault Circuit Interrupters
- Added the following new section on GFCIs:
“Ground Fault Circuit Interrupter Testing
|
The use of the internal tester and a load or test meter to verify power interruption is the preferred method of testing a ground fault circuit interrupter. External testers may give misleading or erroneous results and, in some case, may be hazardous. |
The building manager and ES&H coordinators for building residents shall cooperatively determine the responsibility for testing ground fault circuit interrupters (GFCIs) in each building, as follows:
- Permanent receptacles equipped with an integral GFCI shall be tested either monthly or at the time of use, whichever is less frequent. In each case, the user of the GFCI shall be responsible for performing the test.
- Receptacles continuously in use (e.g., cord-and-plug-connected equipment continuously served from the receptacle) shall be tested every month by the owner of the attached equipment. For exceptions to GFCI testing requirements, consult Electrical Safety.
- Testing shall be performed according to the instructions below.
GFCI Test Procedure
- Confirm that the receptacle is energized by plugging a load into the receptacle and energizing it.
- De-energize the load and unplug the equipment from the receptacle or receptacle string to be tested.
- Test the GFCI receptacle by pushing the TEST button. Notice that the RESET button pops out.
- Plug in and attempt to energize the load. It should not energize.
- Turn off the associated load and unplug the equipment from the receptacle.
- Push the RESET button; the TEST button should pop up out.
- Restore any associated equipment.
GFCI receptacles that fail any portion of the above test procedure shall NOT be used. Notify SNL Facilities (Facilities Management and Operations Center in NM or Facilities Management in CA) of any failed receptacles. |
Responding to a Failed GFCI
If a ground fault circuit interrupter (GFCI) outlet trips or fails while in use, Members of the Workforce shall do the following:
- Immediately unplug the devices installed in the outlet.
- Attempt to reset the outlet by pushing the RESET button. If the outlet does not reset, take the device that caused the trip out of service, as described in Section 2.1 of this chapter, and contact Facilities via Telecon Plus to investigate and repair the faulty outlet.
- If the outlet does reset, test the outlet in accordance with the GFCI test procedure <link> using a device other than the one that was installed in the outlet at the time of the trip. If the outlet still does not test satisfactorily, take the device causing the trip out of service, as described in Section 2.1 of this chapter, and contact Facilities via Telecon Plus to investigate and repair the faulty outlet.
- If the outlet tests satisfactorily, plug in the device that was installed in the outlet at the time of the trip and attempt to operate it. If more than one item was installed, determine that the total current drawn by the devices is less than the outlet rating, then install and test the devices one at a time.
- If the outlet trips again, place the device causing the trip out of service, as described in Section 2.1 of this chapter, and report the failure to SNL Facilities.
- If the outlet does not trip, continue normal operation of the attached equipment.”
Chapter 3 Facility-Specific Requirements
Section 3.3 Safe Work Practices
- Added a new section, 3.3.1 Use of Proximity Testers
“For work on facilities installations, it is permissible to use a proximity tester to determine the energy state but only if all of the directions below are followed:
- If the source and destination of the wire cannot be reasonably determined, and there are no other locations available to test the wire with an adequately rated voltmeter, as a last resort, use proximity testers prior to cutting into a wire.
- The proximity testers shall be rated as a CAT III meter device (600 VAC), and be listed by a nationally recognized testing laboratory, such as UL or CSA.
- The worker shall wear personal protective equipment (PPE) appropriate for 600 VAC, 8 calorie/cm2 flash hazard.
- The worker shall verify that the proximity tester is operational before and after checking the wiring to be cut.
- In no instance shall the worker cut into a wire that the proximity tester determined as energized.
- After cutting the wiring, the worker shall conduct a zero-energy verification with an appropriately rated voltmeter on both wire ends.
- Upon discovering voltage during this final verification, the worker shall stop work, cover the exposed ends with a wire nut rated for the discovered voltage or other insulating material, and disconnect or isolate and lockout the source of the voltage before proceeding.
The use of proximity testers is limited to facilities-type work where the tracing of wire through a junction box may not reveal the energy source. The proximity tester shall not be used instead of an appropriate voltmeter when establishing an electrically safe work condition in accordance with Section 2.3 in Chapter 2 of this manual.
There are other uses of proximity testers, such as tracing wire runs, but they are not addressed in this manual.”
Section 3.19 Live-Line Tools
- Changed the first part of the second paragraph from “Fiberglass-handled tools shall be tested every 12 months to 100 kV per ft of length, and wooden-handled tools shall be tested every 6 months to 75 kV per ft of length per ASTM F711-89.”
to “Fiberglass-handled tools, including shorting sticks, shall be tested every 2 years to 100 kV per ft of length, and wooden-handled tools shall be tested every 6 months to 75 kV per foot of length (ASTM F711.)
Chapter 4, Research and Development-Specific Requirements
Section 4.7 Capacitors and Capacitor Banks
4.7.2 Safety Practices
- Added “Test shorting sticks every 2 years in accordance with approved methods described in ASTM F711.”
Administrative Changes
In each chapter at the first mention of accessing an industry standard online, the following sidebar was added:
It is not possible to link directly to most industry standards because they are copyrighted. However, because Sandia has a subscription, you can view many of these documents on the Sandia internal network by doing the following:
1. Go to http://infoserve.sandia.gov/ihs/index.htm.
2. Click on IHS Standards Expert.
3. Under Search > Document Number or Organization, enter your document name and number (e.g., "NFPA 70") or the name of a code (e.g., “NEC”). Select Search or press Enter.
4. Click on the View icon. The standard will open in PDF after you select Accept to indicate your acceptance of the licensing agreement.
5. When you finish searching, select Log Out in the upper right corner.
|
Chapter 1, Introduction
Section 1.1.6 Records
- Replaced the five tables of recordkeeping responsibilities with one table-- Table 1.1, Required Recordkeeping.
- Deleted in the table the “Owner” line
Section 1.2 Electrical Safety Committees
1.2.1 Authority Having Jurisdiction
- Deleted the first sentence of the second paragraph “However, qualified personnel may assume the responsibility of the AHJ in the performance of their normal activities.“
Chapter 2, General Safety Requirements
Section 2.2 Qualifications and Training
2.2.2 Training
Refresher Training:
- Added the following to clarify the existing text: “There is no refresher training for ELC105. Members of the Workforce who are assigned ELC105 as a job requirement shall retake ELC105 every three years.”
Section 2.3 Working On or Near Live Parts
Section 2.4 Planning and Performing Activities Involving Exposed and Energized Electrical Conductors and Circuits
2.4.3 Performing Activities Within the Limited Approach Boundary
- Added Table 2-5, Specific Requirements for Working Within the Limited Approach Boundary.
Section 2.5 Identification of Electrical Equipment
- Deleted Figure 2-2, Identifying Equipment.
Section 2.6 Access to Electrical Equipment
- Deleted the following subsections about signs:
- How to Obtain Signs
- Types of Signs
- Where to Post Signs.
Section 2.7 Working Space Requirements for Electrical Equipment
- Deleted Figure 2-3, Working Space Width.
- Deleted Figure 2-4, Condition 1: Insulated Wall Background.
- Deleted Figure 2-5, Condition 2: Grounded Wall Background.
- Deleted Figure 2-6, Condition 3: Electrical Equipment Background.
Section 2.8 Working Space Requirements for Electrical Equipment
- Added Figure 2-2, Working Space – Panel Clearance.
Section 2.11.3 Electric Power Tools
- Added the following bullets with text that already existed:
- “Power supply cords for double-insulated tools shall be jacketed and shall not include a grounding conductor.
- “Double Insulated” or “Double Insulation” shall be permanently marked on the tool; or the square within a square symbol for double-insulation may be used,
- All double-insulated tools shall be listed.”
Section 2.12 Additional Requirements
2.12.1 Power Strip and Uninterruptible Power Supplies
- Added “Prior to moving an uninterruptible power supply (UPS), qualified Members of the Workforce should disconnect the batteries in accordance with the manufacturer’s recommendations. If no recommendations are provided, contact Electrical Safety for additional guidance.”
Chapter 3, Facility-Specific Requirements
Section 3.3 Safe Work Practices
- Deleted the entire paragraph “General safe work practices are described in Section 2.4, "Safe Work Practices." This chapter contains additional practices that are facilities specific and not applicable to a nonfacilities electrical worker and reiterates specific practices that are of special importance when working with facilities electrical systems.”
- Moved the following from Chapter 2 and inserted it here:
- Section 3.3.2, Safety Grounds
- Section 3.3.3, Identification of Electrical Equipment
- Figure 3-1, Source and Load Labeling.
- 3.3.2.3 Location of Grounds.
Chapter 4, Research and Development-Specific Requirements
Section 4.4 Safe Work Practices
- Added the following sidebar to clarify and emphasize text that already existed:
| Working within the limited approach boundary of exposed energized parts is inherently dangerous and is performed only as a last resort. Working on energized equipment for convenience or by custom is not appropriate energized work. All appropriate energized work within the limited approach boundary of exposed live parts shall be justified and such work shall be approved by a senior manager, as required by Section 2.4 of this manual. |
Section 4.4.9 Servicing Electrical Equipment
- Deleted the second bullet, which is incorrect: “All energized work shall meet the requirements listed in Section 2.1 in Chapter 2 of this manual.”
Section 4.4.12 Modifications or Installations
- Changed for clarification purposes “Before using the equipment, the person performing the modification shall:
- Ensure equipment that is in-house built, modified NRTL, or from a manufacturer that does not meet the requirements of an "Accepted Manufacturer" as defined in the SNL Electrical Equipment Approval Guidelines, is approved and documented using the form in Attachment A-2, “Other Manufacturer Equipment, In-House Built Equipment or Modified NRTL-Listed Electrical Equipment Approval Form."
- Ensure that modified and non-NRTL equipment is electrically checked by calibrated equipment in accordance with SNL CPR 100.3.1.
- Document the equipment modifications in the user file or the file of the department that owns the equipment.
Maintain documentation for as long as the equipment is in use.”
to “Before using the modified equipment, the person who made the modification shall (1) have the equipment inspected by a qualified SNL equipment inspector and (2) maintain documentation for as long as the equipment is in use.”
Section 4.4.17 Documentation of Nonlisted Equipment
- Changed “Equipment that is not listed by an NRTL shall comply with the requirements of the SNL Electrical Equipment Approval Guidelines and shall be approved and documented using the form in Attachment A-1, "Accepted Manufacturer Unlisted Electrical Equipment Approval form."
to “Equipment that is not listed by an NRTL shall comply with the requirements of the SNL Electrical Equipment Approval Guidelines (SEOP-01).
Chapter 5, Special Occupancies
- Added the following new section:
“5.5 Arctic Weather
This section is being developed. It will address the use of electrical equipment in arctic weather.”
Administrative Changes Only
May 26, 2011
This document was revised to:
- Change the line on the subject matter expert by deleting “CA Counterpart: Herman Armijo” and adding David Paoletta and making “Subject Matter Expert” plural. The line now reads: “Subject Matter Experts: Marc Williams and David Paoletta.
Administrative Changes Only
July 28, 2010
The three attachments to the Electrical Safety Manual have been removed because this material exists elsewhere. The deleted attachments are:
- A-1. Accepted Manufacturer Unlisted Electrical Equipment Approval Form
- A-2. Other Manufacturer Equipment, In-House Built Equipment or Modified NRTL-Listed Electrical Equipment Approval Form
- A-3. Electrical Equipment Racks Approval Form.
Administrative Changes Only
June 28, 2010
This document was revised to:
- Change: Subject Matter Expert from Mark McNellis to
Marc Williams.
October 13, 2009
This document is no longer a CPR. This document implements the requirements of Corporate Procedure ESH100.2.ELC.1, Manage Electrical Hazards.
April 29, 2008
Note: (*) asterisk denotes substantive change.
Chapter 2, “General Safety Requirements”
This chapter was revised to:
- Under topic, “2.3 Working On or Near Live Parts,” and under subtopic, “Establishing an Electrically Safe Work Condition”:
- *Add: The following note, “For servicing or maintenance of electrical equipment, refer to the requirements in ES&H Manual, Section 4C, ‘Lockout/Tagout (LOTO).’ “
- *Add: The following requirement, “Live parts to which an employee might be exposed shall be put into an electrically safe work condition before an employee works on or near them, unless it can be demonstrated that de-energizing increases or introduces additional hazards or is infeasible due to equipment design or operational limitations.”
- *Change: The requirement
- from
- A qualified worker shall verify that all live circuits and parts and other sources of energy (electrical or mechanical) have been disconnected, released, or restrained.
- Determine All Possible Sources of Energy. Check applicable drawings, schematics, diagrams and identification tags to ensure all sources of energy are identified.
- De-energize the Equipment. After properly interrupting the load current, open the disconnecting device(s) for each source of energy, and, when possible, visually verify that the disconnecting device is physically opened.
- Apply Lockout/Tagout Devices. Each department manager shall document training and implementation of the lockout/tagout procedures (based on MN471001, ES&H Manual, Section 4C, "Lockout/Tagout (LOTO)" and GN470037, Administrative Control Procedure) to safeguard personnel from injury while they are working on or near energized electrical circuits and equipment. To be qualified to use the lockout/tagout procedure, personnel shall take LTO210. Control circuit devices such as push buttons, selector switches, and interlocks shall not be used as the sole means for de-energizing circuits or equipment.
- Testing the Test Equipment. The test equipment shall be checked for proper operation immediately before and immediately after the verification test. All test equipment shall be rated for the system voltage and application.
- Verification Test. A qualified worker shall use test equipment to test the circuit elements and electrical parts of equipment to which personnel will be exposed and shall verify that the circuit elements and equipment parts are de-energized. Testing shall be performed as if the circuit is energized. Proximity testers and solenoid-type devices should not be used to test for the absence of alternating current (AC) voltage.
- Remove Stored Electrical Energy. Capacitors and high energy capacitance elements such as cables and transformers shall be safely discharged, short-circuited, and grounded if the stored electric energy could endanger personnel. A stored energy level of 10 Joules or greater is considered dangerous.
- Remove Stored Nonelectrical Energy. Devices that could re-energize electric circuit parts shall be blocked or relieved to the extent that the circuit parts could not be accidentally energized. Specific examples include wound springs and pneumatic driven devices.
- to
- A qualified worker shall verify that all live circuits and parts and other sources of energy (electrical or mechanical) have been disconnected, released, or restrained as follows:
- Determine all possible sources of electrical supply to the specific equipment. Check applicable up-to-date drawings, diagrams, and identification tags.
- After properly interrupting the load current, open the disconnecting device(s) for each source.
- Wherever possible, visually verify that all blades of the disconnecting devices are fully open or that draw-out type circuit breakers are withdrawn to the fully disconnected position.
- Apply lockout/tagout devices in accordance with ES&H Manual, Section 4C, "Lockout/Tagout (LOTO)."
- Use an adequately rated voltage detector to test each phase conductor or circuit part to verify that they are de-energized. Test each phase conductor or circuit part both phase-to-phase and phase-to-ground. Before and after each test, determine that the voltage detector is operating satisfactorily.
- Where the possibility of induced voltages or stored electrical energy exists, ground the phase conductors or circuit parts before touching them. Where it could be reasonably anticipated that the conductors or circuit parts being de-energized could contact other exposed energized conductors or circuit parts, apply ground connecting devices rated for the available fault duty.
Administrative Changes Only
April 11, 2008
Global change to insert appropriate reference to Corporate training requirements and documentation. See detailed change history for ES&H Manual, 4/11/08.
Administrative Changes Only
February 5, 2008
Chapter 2, “General Safety Requirements”
This chapter was revised to:
- Change: Organization number from “Facilities Management & Operations Center (10800)” to “Facilities Management & Operations Center (4800)” throughout the document.
- Under topic, “2.4 Safe Work Practices,” and subtopic “Reviews and Inspections”:
- Change: Organization number from “Construction Inspection and Acceptance Department (10827)” to “Construction Inspection and Acceptance Department (4827)” in first paragraph.
- Under topic, “2.5 Identification of Electrical Equipment,” and subtopic “Source and Load Labeling”:
- Change: Organization number from “Safety Engineering (10322)” to “Safety Engineering (4122)” in final paragraph.
Chapter 3, “Facility Specific Requirements”
This chapter was revised to:
- Under topic, “Scope”:
- Change: Organization number from “Facilities Management & Operations Center (NM) (10800)” to “Facilities Management & Operations Center (NM) (4800)” in the second sentence.
- Under topic, “Management Responsibilities”:
- Change: Organization number from “Facilities Management & Operations Center in 10800” to “Facilities Management & Operations Center in 4800”.
- Under topic, “Switching Procedures,” and subtopic “SNL/NM Switching Procedures”:
- Change: ES&H Manual section number from “Section C” to “Section 4C” in the final paragraph.
- Under topic, “Live Line Tools,” and subtopic “Inspection and Tests”:
- Change: Organization number from “Planning Services Team (10864)” to “Planning Services Team (48571)” in the third paragraph.
Chapter 4, “Research and Development - Specific Requirements”
This chapter was revised to:
- Under topic, “4.3 Safe Work Practices,” and subtopic “Servicing Electrical Equipment:
- Change: Organization number from “Facilities Management & Operations Center (NM) (10800)” to ”Facilities Management & Operations Center (NM) (4800)” in the Note.
- Under topic, “4.6 Capacitors and Capacitor Banks,” and subtopic “Periodic Inspections”:
- Change: Organization number from “Regulated Waste/Nuclear Material Disposition Department (10339)” to “Regulated Waste/Nuclear Material Disposition Department (4139)” in the first bullet.
- Under topic, “4.7 Inductors and Inductor Systems,” and subtopic “Hazards”:
- Change: Organization name and number from “Industrial Hygiene & Safety Programs (10327)” to “Industrial Hygiene Program (4127)” in the first bullet.
- Under topic, “4.9 Radio Frequency Equipment,” and subtopic “Hazards”:
- Change: Title for Section 2.7 from “Working Space Requirements for Energized Work” to “Working Space Requirements for Electrical Equipment” in the first bullet.
- Under topic, “4.13 Enclosed Electrical/Electronic Equipment,” and subtopic “Enclosure Grounding and Bonding”:
- Change: Update organization number from “Safety Engineering (10322)” to “Safety Engineering (4122)” in the last bullet.
Chapter 5, “Special Occupancies”
This chapter was revised to:
- Change: Organization number from “Facilities Electrical and Fire Protection Engineering Department (10861)” to “Facilities Electrical and Fire Protection Engineering Department (4829)” throughout the document.
- Under topic, “5.1 Hazardous Areas,” and subtopic “Assistance”:
- Change: Organization name from “Facilities Planning and Engineering Department” to “Planning and Construction Management Department”.
- Under topic, “5.2 Explosives Areas,” and subtopic “Assistance”:
- Change: Organization name and number from “Explosives Safety Engineering Department (10322)” to “Safety Engineering Department (4122)”.
- Change: Organization name from “Facilities Planning and Engineering Department” to “Planning and Construction Management Department”.
- Under topic, “5.3 Confined Spaces,” and subtopic “Assistance”:
- Change: Organization name and number from “Industrial Hygiene (10327)” to “the Industrial Hygiene Program (4127)”.
January 25, 2008
Note: (*) asterisk denotes substantive change.
Chapter 2, "General Safety Requirements," was revised to:
- Under topic, “2.9 Servicing Electrical Equipment and Systems”:
- *Add: The following subtopic and associated requirements and guidance:
- Line-Owned Equipment Maintenance
- Operating instructions/manuals generally provide guidance on frequency and method of performing equipment maintenance. Sandia spends a large portion of its budget in the purchase of equipment. Complying with the manufacturer’s recommendations for periodic preventive maintenance ensures that the equipment will perform properly when required for the expected life of the equipment, maintains the listing of the equipment, if it has one, and assures that safety-related devices will function when required to protect the operator.
- For equipment without operating manuals or other maintenance instructions, NFPA 70B, Recommended Practice for Electrical Equipment Maintenance, provides guidance for many types of electrical equipment. NFPA 70E, Electrical Safety in the Workplace, Chapter 2, provides specific requirements for safety-related maintenance of electrical equipment.
- The development and implementation of a maintenance plan for all equipment owned by each organization is strongly encouraged. Contact the center’s customer support Safety Engineer or Electrical Safety SME for additional information, or for assistance in setting up a maintenance program.
References was revised to:
- Under topic, “Requirements Source Documents,” and under subtopic, “NFPA (National Fire Protection Association)”:
- *Add: The requirement, “NFPA 70B, Recommended Practice for Electrical Equipment Maintenance, 2006.”
December 14, 2007
Global Change to insert appropriate reference to 10 CFR 851. See detailed change history for ES&H Manaul, 12/14/07.
September 4, 2007
Note: (*) asterisk denotes substantive change.
Change: The Review Date in the header to indicate that an ES&H Manual
Self-Assessment (SA) Checklist was completed.
Chapter 2, "General Safety Requirements," was revised to:
- Under topic, “2.1 Electrical Work Requirements – General,” and
under subtopic “Requirements”:
- Move: The following requirement and note to the end of the topic
and to the end of the new subtopic, “Electrical Equipment Approval”:
- All Members of the Workforce shall ensure that:
- All electrical equipment purchased, manufactured or used at
any SNL facility, including office and personal (household rated)
equipment, is in compliance with the SNL Electrical Equipment Approval
Guidelines for Nationally Recognized Testing Laboratory (NRTL)
certification or alternate testing.
Note: Purchased equipment or equipment manufactured
internally to research and development (R&D) specifications may
be exempt from NRTL labeling requirements. See “SNL Electrical
Equipment Approval Guidelines" for additional information.
- *Delete: The requirement, “All Members of the Workforce shall
ensure that guards or barriers, in conjunction with safety signs, are placed
around "live" parts that are operating at or above 50 volts (see
Section 4M, "Signs (Including SWHAS) and Tags," for information
about safety signs).”
- *Change: The requirement
from
Managers who are responsible for Sandia-controlled premises shall
ensure:
- Electrical work activities, equipment, and installations are in compliance with the
National Electric Code (NEC), National Electric Safety code (NESC), and
OSHA Standards contained in this manual.
to
Managers who are responsible for Sandia-controlled premises shall
ensure:
- Electrical work activities, equipment, and installations are in compliance with
SNL, PG470246, 10 CFR 851 Worker Safety and Health Program Plan (WSHPP),
specifically the applicable National Electric Code (NEC), National Electric
Safety code (NESC), and OSHA Standards contained in this manual.
- Change: The requirement from “All Members of
the Workforce shall use household equipment, such as coffee pots, popcorn
poppers, or microwave ovens, according to the manufacturer's instructions” to “All
Members of the Workforce shall use appliances, such as coffee pots, popcorn
poppers, or microwave ovens, according to the manufacturer's instructions.”
- *Move: The following paragraph headings and associated requirements
to topic 2.3, “Working on or Near Live Parts”:
- Approach to Work on or Near Electrical Equipment
- Electrical Shock Approach and Arc Flash Protection Boundaries
- Requirements
- Second Person
- Safety Watch
- Person in Charge
- Accidents Involving Electricity
- *Add: The following Electrical Equipment Approval requirements:
- Electrical Equipment is acceptable for use on Sandia-controlled property
only if approved. Equipment may be deemed acceptable if the equipment
has been listed by a Nationally Recognized Testing Laboratory
or if a certification letter has been obtained from the manufacturer. For information
regarding manufacturer certification of Non-NRTL listed equipment, refer to AOP
06-05 (SNL Electrical Equipment Approval Guidelines).
If there
is no consensus standard for approval, commercial equipment may be
approved by a certified equipment inspector under AOP 06-05, Electrical
Equipment Approval Guidelines. For custom-built equipment for which no
suitable commercial alternative exists, the equipment may also be approved
under AOP 06-05, or the hazards associated with the equipment may be
managed with a Technical Work Document.
- Managers shall ensure that:
- Only listed equipment is purchased, when available.
- All orders for equipment or electrical components specify that those
items shall be listed by a Nationally Recognized Testing Laboratory,
if available.
- Electrical equipment is used in accordance with its listing.
- All electrical equipment manufactured for use by Sandia is uniquely
labeled to identify SNL as the manufacturer.
- Members of the Workforce shall ensure that:
- All equipment is used in the manner it was intended and/or in accordance
with its listing.
- Under topic, “2.2 Qualifications and Training,” and under
subtopic “Qualifications”:
- *Delete: The following requirements: “A deliberate
approach to worker qualification shall be taken that includes the following
parts:
- Knowledge of the specific equipment
- Is the worker aware of the design, construction, internal and external
sources of energy, attendant hazards and other related items associated
with this equipment?
- Knowledge of applicable regulatory requirements
- Is the worker sufficiently familiar with associated maintenance
techniques, applicable codes (NEC, SEMI S-2) and other general
electrical knowledge to safely work on the item in question?”
- Delete: The paragraph heading, “How to Become
Qualified.”
- *Change: The requirement from “To
become qualified for electrical work, personnel shall meet the training
requirements for the job assignment” to “To
become qualified for electrical work, personnel shall meet the training
requirements specified in this manual and in the PHS.”
- *Add: The requirement, “To become qualified
for electrical work, personnel shall receive on the job training in order
to be prepared for the assigned task.”
- Under topic, “2.2 Qualifications and Training,” under subtopic “Training,” and
under “Required Awareness Training”:
- *Change: The course title from “Facilities
(Low- and High- Voltage) Electrical Safety Awareness” to “Low-
and High- Voltage Electrical Safety Awareness,” and change the description
of the personnel required to take the course from “Facility
personnel including but not limited to electricians working on facility-type
distribution systems” to “Personnel including
but not limited to electricians working on facility-type distribution systems
(i.e., disconnects, motor starters).”
- Change: The title of paragraph 2.3 from “Energized
Work Procedures” to “Working On
or Near Live Parts.”
- Under topic, “2.3 Working
On or Near Live Parts”:
- Move: The section “Establishing an Electrically
Safe Work Condition,” currently
located in Section 2.4, “Safe Work Practices,” under this
topic.
- *Add: The subtopic, “Justification for Work,” and,
under this new subtopic, add the following note and requirements:
- Note: Working on energized equipment at Sandia National
Laboratories is the exception not the rule. Every attempt shall
be made to work de-energized!
- Live parts to which an employee might be exposed shall be put into
an electrically safe work condition before an employee works on or near
them, unless it can be demonstrated that de-energizing increases or introduces
additional hazards or is infeasible due to equipment design
or operational limitations.
- Every attempt shall be made to guard live parts, implement engineered
controls (i.e. interlocks, barriers), or work de-energized. Energized
parts that operate at less than 50 volts to ground shall not be required
to be de-energized if there will be no increased exposure to electrical
burns or to explosion due to electric arcs.
- Under topic, “2.3 Working on or Near Live Parts,” and
under subtopic “Approach
to Work on or Near Electrical Equipment”:
- *Change: The Note and associated requirements
from
- “Note: Working near energized electrical equipment
is defined as any activity inside the limited approach boundary (LAB)
as defined by NFPA 70E. The LAB starts at 42 inches from exposed energized
parts and increases with voltage. Please contact your ES&H coordinator
for assistance in determining your LAB. Safety-related work practices
(shock and flash hazard analyses, and energized work TWDs) shall be used
to prevent electric shock or other electrically induced injuries when
personnel work on or near electrical conductors or circuit parts that
are energized.”
to
- “Working near energized electrical equipment is defined as any
activity inside the limited approach boundary (LAB) as defined
by NFPA 70E 130.2.C. The LAB starts at 42 inches from exposed energized
parts and increases with voltage. Please contact your ES&H coordinator
for assistance in determining your LAB.”
- *Add: The following requirements and Note:
- All energized work at Sandia National Laboratories requires an Energized
Work Permit (EWP) authorized by a Senior Manager.
- Exception: Work that involves testing, voltage measuring,
and troubleshooting (no manipulation of energized parts), requires an
Operating Procedure authorized by a Senior Manger.
- Note: Performance of the zero energy verification
Lockout/Tagout (LOTO) step is the only exception to the requirement for
senior manager approval of appropriate energized electrical work. This
work is authorized and explained in an equipment specific LOTO operating
procedure (OP) and does not require senior manager approval.
- *Add: The following requirement:
- Managers shall verify that every attempt has been made to work de-energized.
- Change: The requirement from “Managers
shall determine if energized electrical work performed in their department
is appropriate” to “Managers shall determine
if energized electrical work performed in their department is appropriate. Remember
that working on energized equipment is the exception not the rule.”
- *Delete: The following requirement:
- Managers shall ensure that Appropriate Energized Electrical Work is
work on circuits >50 volts which, if de-energized, would result in
an increased or additional hazard or if de-energizing the circuit is
not feasible due to equipment design or operational limitations.
- *Change: The Note from “Not
feasible’ is not the same as ‘not convenient.’ Work
on energized equipment for reasons of custom or expediency does not meet
the requirement of appropriate energized electrical work and is not allowed” to “Work
on energized equipment for reasons of convenience or expediency does
not meet the requirement of appropriate energized electrical work and
is not allowed.”
- *Change: The requirement from “Managers
shall use the energized work permit, or other appropriate technical work
documents (TWDs) to ensure that appropriate energized electrical work is
justified and authorized.” to “Managers shall
use the appropriate technical work documents (EWP or OP) to ensure that
appropriate energized electrical work is justified and authorized.”
- *Change: The
requirement from “Managers shall prohibit inappropriate
energized electrical work” to “Managers shall
prohibit any activity not included in the scope of the EWP/OP from being
performed energized.”
- *Delete: The following requirement:
- Managers shall identify and minimize the hazard to worker through:
- Thorough review of the equipment design to assess hazards. Equipment
design review shall use electrical diagrams, equipment details, sketches
or pictures of unique features and/or reference data, as appropriate.
- Development of appropriate procedures (see Section 2.3 and Energized
Work Decision Tool).
- Use of personal protective equipment.
- Training.
- Pre-work briefings.
- *Add: The following requirement:
- Managers shall verify that the correct hazard controls, as identified
through use of the Energized Work Decision Tool, are incorporated in
the EWP or OP.
- *Add: The following requirements: “Members of
the Workforce shall:
- Make every attempt to work de-energized.
- Stop work, reassess hazards, and hold a briefing if the scope of the
activity changes.
- NOT perform any task not covered in the scope of
the EWP/OP.”
- *Delete: The following requirement: “Members
of the Workforce shall:
- Use of electrical diagrams, equipment details, sketches or pictures
of unique features and/or reference data while de-energizing the equipment
is required.
- *Change: The requirement from “Members
of the Workforce shall use the right tool for the job. This includes using
appropriately sized wrenches, sockets, screwdrivers etc. for the equipment
and using tools of the appropriate insulation/voltage rating for the expected
voltage/current” to “Members of the Workforce
shall use the right tool for the job. This includes using insulated tools
when required per NFPA 70E 130.7.C.9.a.”
- *Change: The requirement
from
- “Senior Managers shall authorize the justification and work
plan for all appropriate energized electrical work above 50 volts using
the energized work permit form [SF 2005-EWP (3-2007)]. The energized
work permit is required for any electrical work task associated with
circuit repair or reconfiguration of a circuit in the energized state.“
to
- “Senior Managers shall authorize the work plan for all appropriate
energized electrical work above 50 volts using the energized work permit
form [SF 2005-EWP (3-2007)]. The energized work permit is required for
any activity performed within the LAB with the exception of testing,
voltage measuring, and troubleshooting
– these tasks require an operating
procedure. Authorization of the EWP shall be evident by Senior Manger
and Electrical Safety Program Manager signature.”
- *Change: The requirement
from
- “Senior Managers shall authorize routine troubleshooting/diagnostic
and other measurement types of appropriate energized electrical work
tasks using other TWDs (i.e., operating procedures). Authorization of
such TWDs shall be evident by Senior Manager and Safety Engineer signature
on the TWD. Such TWDs shall be department specific and identify:
- The types of equipment upon which department staff may perform such
electrical work tasks.
- The electrical hazards (i.e., arc flash and shock) associated with
performing such electrical work tasks on identified equipment types.
- Operating voltages and currents, and energies.
- General electrical safety work practices and controls that will
be used during performance of such work tasks so as to avoid identified
electrical hazards.
- Work practices and controls include:
- Work methods (e.g., measurement techniques, guarding various
circuit parts, body positioning, shock approach boundary establishment
so as to prevent inadvertent contact with energized circuit parts).
- Use of insulated tools.
- Use of appropriate personal protective equipment for arc flash
and shock protection rated for the highest arc flash energy and
voltage present (e.g., gloves, hard hats, safety shoes, eye and
face protection, insulated live-line tools, cotton clothing, and
arc protection).”
to
- “Senior Managers shall authorize testing, voltage measuring,
and troubleshooting via an Operating Procedure (OP). Authorization
of such OPs shall be evident by Senior Manager and Safety Engineer
signature on the TWD. Such TWDs shall be department specific and include:
- The description and location of the equipment being worked on.
- Justification as to why the work has to be performed energized.
- The scope of the work being performed (limited to testing, voltage/current/resistance
measuring, and troubleshooting).
- The electrical hazards (i.e., arc flash and shock) associated with
performing such electrical work tasks in voltage, current, and energy.
- The required controls for the identified hazards (PPE, shock and
flash boundaries, insulated tools, etc.). These controls are identified
through use of the energized work decision tool (LINK PLEASE)
- The means to restrict access to unqualified persons from the work
area.
- Evidence of completion of a pre-job briefing.”
- *Delete: The following requirement: “Such TWDs
shall be department specific and identify:
- General electrical safety work practices and controls that will be
used during performance of such work tasks so as to avoid identified
electrical hazards.
- Work practices and controls include:
- Work methods (e.g., measurement techniques, guarding various circuit
parts, body positioning, shock approach boundary establishment so
as to prevent inadvertent contact with energized circuit parts).
- Use of insulated tools.
- Use of appropriate personal protective equipment for arc flash
and shock protection rated for the highest arc flash energy and voltage
present (e.g., gloves, hard hats, safety shoes, eye and face protection,
insulated live-line tools, cotton clothing, and arc protection).”
- *Change: The requirement from “Senior
Managers shall ensure that the energized work permit or another TWD is
present at the job location and is readily available to all electrical
workers involved with the electrical work addressed by the permit” to “Senior
Managers shall ensure that the energized work permit or OP is present at
the job location and is readily available to all electrical workers involved
with the electrical work addressed by the permit.”
- *Change: The requirement from “Senior
Managers shall ensure TWDs are written for the following electrical safety
related situations: “ to “Senior Managers
shall ensure that an EWP or OP is written for the following electrical
safety related situations:”
- *Delete: The requirement: “Senior Managers shall
ensure TWDs address the following commensurate with the risks to electrical
workers relative to their assigned electrical work tasks (see Sections
2.3 and 2.4 of this manual):
- De-energizing circuits, if possible, and a means to prevent re-energizing
the circuit (Lockout/Tagout).
- Method(s) for verifying or confirming that a circuit or device is
in the de-energized state or in an electrically safe condition during
lockout/tagout-related activities.
- Grounding of conductors and all possible conducting parts.
- Provisions for qualified and properly equipped standby personnel (i.e.,
safety watch or 2nd person).
- Method for notifying surrounding workers of hazards associated with
exposed energized electrical parts.
- Provision of electrical shock approach and arc flash boundaries.
- Provision of boundary access controls (barriers and barricades, shielding,
postings).
- Responsibilities of safety watch or second person responsibilities.
- Awareness of emergency procedures.”
- *Delete: The requirement: “Senior Managers shall
ensure that other TWDs meet the general requirements provided by Chapter
21, ‘Technical Work Documents (TWDs)’.“
- Under topic, “2.3 Working On or Near Live Parts,” under subtopic “Electrical
Shock Approach and Arc Flash Protection Boundaries,” and under “Requirements”:
- *Change: The term from “Arc
Flash Boundary” to “Flash Protection Boundary,” throughout
this topic.
- *Change: The term from “Limited-Approach
Shock Boundary” to “Limited-Approach Boundary,” throughout
this topic.
- *Change: The term from “Restricted-Approach
Shock Boundary” to “Restricted-Approach Boundary,” throughout
this topic.
- *Change: The term from “Prohibited-Approach
Shock Boundary” to “Prohibited-Approach Boundary,” throughout
this topic.
- *Change: The requirement
from
- “Any persons occupying the area inside this boundary shall use
electrical flash PPE as required by NFPA 70E Table 130.7(C)(10) when
work is being performed on energized electrical circuit parts.
to
- “Any persons occupying the area inside this boundary shall use
electrical flash PPE as required by NFPA 70E Table 130.7(C)(10).”
- *Delete: The requirement, “Electrical PPE is
not required to visually inspect energized electrical parts operating between
50 and 600 volts.”
- Change: The Note
from
- “A facility electrician may request an electrical engineer to
determine/establish the shock approach boundaries for a particular electrical
work, in which case the shock approach boundaries used may differ from
the shock approach boundaries listed below. Facility electricians include
electricians working in either the Facilities Management & Operations
Center (NM) (10800) or the Site Operations Center (CA) (8500).”
to
- “A facility electrician may request an electrical engineer to
determine/establish the flash approach boundary for a particular electrical
application, in which case the flash approach boundary used may differ
from the flash approach boundary listed below. Facility electricians
include electricians working in either the Facilities Management & Operations
Center (NM) (10800) or the Site Operations Center (CA) (8500).”
- Change: The requirement
from
- “Post a limited-approach shock boundary at the distance specified
in Table 130.2(C) of NFPA 70E Handbook for Electrical Safety in the Workplace,
from fixed exposed energized circuit part(s) and from movable exposed
conductors for the highest rated voltage that may be present”
to
- “Post a limited-approach boundary at the distance specified
in Table 130.2(C) of NFPA 70E, from fixed exposed energized circuit part(s)
and from movable exposed conductors for the highest rated voltage that
may be present.”
- *Change: The requirement
from
- “This boundary is intended to serve as the limit at which a
person is considered to be working near energized electrical parts and
signifies the requirement for a technical work document”
to
- “This boundary is intended to serve as the limit at which a
person is considered to be working near energized electrical parts and
signifies the requirement for an EWP or OP.”
- Move: The requirements concerning “Second Person,” “Safety
Watch,” and “Person in Charge,” from topic “2.4
Safe Work Practices,” subtopic, “Working on Energized Equipment,” to
this topic (i.e., move the material into the subtopic “Electrical
Shock Approach and Arc Flash Protection Boundaries,” under “Requirements”).
- Under topic, “2.3 Working On or Near Live Parts,” under subtopic “Accidents
Involving Electricity,” and under “Requirements”:
- *Change: The requirement from “Members
of the Workforce who are victims of electrical shock shall always be escorted
to the appropriate Sandia Health Services facility” to “Members
of the Workforce who experience electrical shock shall always be escorted
to the appropriate Sandia Health Services facility.”
- Under topic, “2.4 Safe Work Practices,” under subtopic “Safeguards,” and
under “Workplace Safety”:
- * Add: The following practice to the list: “Make
every attempt to work de-energized.“
- Under topic, “2.4 Safe Work Practices”:
- *Delete: The topic “Approved Electrical Equipment” which
consists of the following requirements (note that information concerning “Approved
Electrical Equipment” is covered in AOP 06-05, Electrical Equipment
Approval):
- All electrical equipment, components, and conductors shall be Nationally
Recognized Testing Laboratory (NRTL) listed in accordance with the SNL
Electrical Equipment Approval Guidelines, with the following exceptions:
- Items that are inspected or tested by another federal agency or
by a state, municipal, or other local authority responsible for enforcing
the NEC, and found to comply with the provisions of the NEC.
- Custom-made and installed equipment built according to specific
standards such as Underwriters Laboratories (UL) 508 or one of the
American National Standards Institute (ANSI) C series of standards.
- Components or installations in aircraft, watercraft, and railroad
equipment.
- Equipment used in an experiment lasting less than 90 days.
- Under topic, “2.5 Identification
of Electrical Equipment,” and under subtopic “Source and Load
Labeling”:
- *Change: The Note from “This
labeling is in addition to the labeling required on approved or listed
electrical equipment” to “This labeling is
in addition to the labeling required on approved or listed electrical equipment
and is a necessary element of the OP/EWP.”
- *Add: The requirement, “All pull and junction
boxes over 600V shall be permanently marked ‘HIGH VOLTAGE’.”
- Under topic, “2.6 Access to Electrical Equipment”:
- *Delete: The following subtopics and associated requirements:
- General Requirement:
- Access to electrical enclosures or equipment shall be adequate for
all anticipated maintenance and operations, including safety of personnel
under emergency conditions and rescue of injured personnel. Following
the rules in this section and in Section 2.1 (Electrical Shock Approach
and Arc Flash Protection Boundaries) will meet this requirement.
- Areas Accessible to Qualified Personnel:
- If the work exposes energized parts that are normally protected,
the PIC shall restrict unqualified persons from entering the area
by using danger signs and suitable barricades. Unqualified personnel
are not allowed inside the Limited Approach Boundary unless escorted,
and are not allowed inside the Restricted Approach Boundary under
any circumstances.
- When determining the size of the accessible work area, the
PIC shall ensure that adequate clearance is maintained for
qualified personnel and for conductive materials and equipment.
(Consult Section 2.7, "Working Space Requirements for Energized Work.")
- Areas Accessible to Vehicular and Pedestrian Traffic:
- Appropriate warning signs and/or barricades shall be utilized where
vehicles and pedestrian traffic may pass adjacent to high or low voltage
electrical equipment under maintenance, operation, or construction.
- Under topic, “2.6 Access
to Electrical Equipment,” and under subtopic “Where to Post
Signs”:
- Add: The following two locations where signs should
be posted:
- On/near elevators and similar equipment supplies to inform the worker
that multiple disconnecting means are required.
- Where vehicles and pedestrian traffic may pass adjacent to high or
low voltage electrical equipment under maintenance, operation, or construction.
- Change: The title of paragraph 2.7 from “2.7
Working Space Requirements for Energized Work” to “2.7
Working Space Requirements for Electrical Equipment.”
- Under topic, “2.9 Servicing Electrical Equipment
and Systems,” and under subtopic “Troubleshooting or Servicing”:
Chapter 3, “Facility Specific Requirements,” was
revised to:
- Under topic, “Auxiliary Systems”:
- *Add: The requirement, “Temporary lighting systems
, such as fixtures / and bulbs , shall be protected from accidental contact
or breakage.”
- Under topic, “Construction Locations”:
- *Change: The requirement from “Ground
Fault Circuit Interrupters (GFCI) shall be used on all 120 V AC single
phase 15 and 20 ampere receptacles which are not a part of the permanent
wiring of the installation or location” to “Ground
Fault Circuit Interrupters (GFCI) shall be used on all 120 V AC single
phase 15, 20 and 30 ampere receptacles which are not a part of the permanent
wiring of the installation or location.”
- *Add: The requirement, “GFCI Receptacles shall
be used on all other (non-120V) temporary circuits or the equipment used
shall be part of an assured equipment grounding program.”
Chapter 4, “Research and Development - Specific Requirements,” was
revised to:
- Under topic, “4.3 Safe Work Practices,” and under subtopic, “Use
of Listed Equipment”:
- *Delete: The requirement, “All electrical equipment, including
personal equipment such as radios and coffee pots, shall be listed by an
NRTL (e.g., UL) or be approved and documented by a qualified person.”
- *Add: The requirement, “Comply with section 2.1, Electrical Equipment
Approval, for all electrical equipment/components used in an R&D application.”
- *Delete: The requirements, “All new equipment purchased shall
be NRTL listed whenever available. The manufacture and use of in-house
equipment shall be minimized. Equipment that is in-house built, modified
NRTL, or from a manufacturer that does not meet the requirements of an “Accepted
Manufacturer” as defined in the SNL Electrical Equipment Approval
Guidelines, shall be approved and documented using the form in Attachment
A-2, “Other Manufacturer Equipment, In-House Built Equipment or Modified
NRTL-Listed Electrical Equipment Approval Form.”
- Under topic, “4.6 Capacitors and Capacitor Banks,” and under
subtopic, “Safety Practices”:
- *Add: The following requirement, “Install an
automatic shorting device on all capacitors except surge capacitors and
capacitors installed as component parts of another apparatus.”
- *Add: The following requirements: “Whenever possible,
the following guidelines should be implemented for capacitors installed
in circuits operating at greater than 600V:
- Group-operated switches shall be used for capacitor switching and
shall be capable of:
- Carrying continuously not less than 135% of the rated current of
the capacitor installation
- Interrupting the maximum continuous load current of each capacitor,
capacitor bank, or capacitor installation that will be switched as
a unit
- Withstanding the maximum inrush current, including contributions
from adjacent capacitor installations
- Carrying currents due to faults on the capacitor side of the switch
- A means shall be installed to isolate from all sources of voltage
each capacitor, capacitor bank, or capacitor installation that will be
removed from service as a unit. The isolating means shall provide a visible
gap in the electric circuit adequate for the operating voltage.
- Isolating or disconnecting switches shall be interlocked with the
load interrupting device or shall be provided with prominently displayed
caution signs to prevent switching load current.
- For series capacitors, the proper switching shall be assured by use
of at least one of the following:
- Mechanically sequenced isolating and bypass switches
- Interlocks or
- Switching procedures prominently displayed at the switching location.”
- Under topic, “4.11 Temporary Wiring,” and under subtopic, “Safety
Practices”:
- *Add: After “Personnel
installing temporary wiring shall follow these guidelines” and
existing requirements, the following requirements:,
- "Remove temporary wiring immediately upon completion of experiment,
project, or purpose for which it was installed.
- Temporary lighting fixtures/bulbs shall be protected from accidental
contact or breakage.”
March 26, 2007
Note: (*) asterisk denotes substantive change.
Chapter 2:
Note: Due to the rapid succession of change between issue
K and issue L, the green text changes from issue K have been maintained in
issue L for the benefit of the reader.
- Under topic, “2.3 Energized Work Procedures”:
- *Change: The second sentence in the second requirement from “Senior
Manager authorization of such TWDs shall be evident by Senior Manager signature
on the TWD” to “Authorization of such TWDs
shall be evident by Senior Manager and Safety Engineer signature on the
TWD.”
March 14, 2007
Note: (*) asterisk denotes substantive change.
Chapter 1:
- Under topic, “1.1 Purpose, Applicability, Scope, Ownership”:
- Change: The second sentence under the subtopic “Purpose” from “This manual has been prepared to provide uniform electrical safety standards and guidance for SNL installations in order to reduce to as low as reasonable achievable the risks associated with the use of electrical energy” to “This manual has been prepared to provide uniform electrical safety standards and guidance for SNL installations in order to reduce the risks associated with the use of electrical energy.”
- Under topic, “1.3 Responsibilities of Individuals”:
- Change: The sentence under the subtopic “Personnel Responsibilities” from “Personnel shall also report any electrical shock to the OOPS non-emergency hotline - 311 or 844-0311 if outside SNL” to “Personnel shall also report any electrical shock to the non-emergency hotline as specified in Chapter 15, "Emergency Preparedness and Management.”
- Under topic, “1.4 Electrical Safety Program”:
- Change: The last sentence of the third Electrical Safety Program Principle from “A Sample Technical Work Document is included in this manual to aid in the development of useful procedures which will identify the hazards and provide appropriate protection for each of those hazards” to “A Sample Technical Work Document is provided to aid in the development of useful procedures which will identify the hazards and provide appropriate protection for each of those hazards.”
Chapter 2:
- Under topic, “2.1 Electrical Work Requirements – General”:
- Add: A hyperlink to the SNL Electrical Equipment Approval Guidelines (AOP 06-05) in the fourth requirement “All Members of the Workforce shall ensure that all electrical equipment purchased, manufactured or used at any SNL facility, including office and personal (household rated) equipment, is in compliance with the SNL Electrical Equipment Approval Guidelines for Nationally Recognized Testing Laboratory (NRTL) certification or alternate testing.”
- Add: A hyperlink to the SNL Electrical Equipment Approval Guidelines (AOP 06-05) in the Note “Purchased equipment or equipment manufactured internally to research and development (R&D) specifications may be exempt from NRTL labeling requirements. See SNL Electrical Equipment Approval Guidelines for additional information.”
- Change: The first sentence of the Note listed under the subtopic “Approach to Work on or Near Electrical Equipment” from “Working near energized electrical equipment is defined as any activity inside the limited approach boundary” to “Working near energized electrical equipment is defined as any activity inside the limited approach boundary (LAB) as defined by NFPA 70E. The LAB starts at 42 inches from exposed energized parts and increases with voltage. Please contact your ES&H coordinator for assistance in determining your LAB.”
- *Change: The requirement listed under the subtopic “Approach to Work on or Near Electrical Equipment” from “Managers shall identify and minimize the hazard to worker through development of appropriate procedures (see Section 2.3)” to “Managers shall identify and minimize the hazard to worker through development of appropriate procedures (see Section 2.3 and
Energized Work Decision Tool.”
- *Change: The first requirement listed under the subtopic “Electrical Shock Approach and Arc Flash Boundaries” from “The manager responsible for authorizing Members of the Workforce to perform appropriate energized electrical work on circuits operating at 50 to 750 volts shall” to “The manager responsible for authorizing Members of the Workforce to perform appropriate energized electrical work on hazardous circuits as identified by the Energized Work Decision Tool shall.”
- Under topic, “2.3 Energized Work Procedures”:
- *Change: The second sentence in the first requirement from “The energized work permit is applied for all electrical work tasks associated with circuit repair or reconfiguration while that circuit is in the fully energized state” to “The energized work permit is required for any electrical work task associated with circuit repair or reconfiguration of a circuit in the energized state.”
- Under topic, “2.4 Safe Work Practices”:
- *Change: The requirement in the first sentence under the subtopic “Approved Electrical Equipment” from “All electrical equipment, components, and conductors shall be Nationally Recognized Test Laboratory (NRTL) listed with the following exceptions” to ”All electrical equipment, components, and conductors shall be Nationally Recognized Testing Laboratory (NRTL) listed in accordance with the SNL Electrical Equipment Approval Guidelines, with the following exceptions.”
- *Change: The first sentence of the requirement "Apply Lockout/Tagout Devices” under the subtopic “Establishing an Electrically Safe Work Condition” from “Each department manager shall document training and implementation of the lockout/tagout procedures (based on MN471001, ES&H Manual, Section 4C, "Lockout/Tagout (LOTO)" and GN470037, Administrative Control Procedure) to safeguard personnel from injury while they are working on or near re-energize electrical circuits and equipment” to “Each department manager shall document training and implementation of the lockout/tagout procedures (based on MN471001, ES&H Manual, Section 4C, "Lockout/Tagout (LOTO)" and GN470037, Administrative Control Procedure) to safeguard personnel from injury while they are working on or near energized electrical circuits and equipment.”
- *Change: The requirement in the third sentence under the subtopic “Working on Energized Equipment” from “Contact Electrical Safety Engineering (10322) for assistance in determining PPE and boundary requirements” to “See the Energized Work Decision Tool or contact Electrical Safety Engineering (10322) for assistance in determining PPE and boundary requirements.”
- *Change: The requirement in the first sentence under the topic “Working on Energized Equipment” and under subtopic “Second Person” from “When work on energized circuits requires a second person, the second person shall be located in the physical vicinity (i.e. within sight and hearing) of the worker” to ”When work on energized circuits requires a second person, as identified using the Energized Work Decision Tool, the second person shall be located in the physical vicinity (i.e. within sight and hearing) of the worker.”
- *Change: The requirement in the first sentence under the topic “Working on Energized Equipment” and under subtopic “Safety Watch” from “When work on energized circuits requires a Safety Watch, the Safety Watch shall be located within both sight and hearing, and less than 50 ft from the worker” to ”When work on energized circuits requires a Safety Watch, as identified using the Energized Work Decision Tool, the Safety Watch shall be located within both sight and hearing, and less than 50 ft from the worker.”
- Under topic, “2.7 Working Space Requirements for Energized Work,” and under the subtopic “General Requirements”:
- *Change: The first sentence from “Working space around energized electrical enclosures or equipment shall be adequate for all anticipated maintenance and operations, including safety of personnel under emergency conditions and rescue of injured personnel” to ”Working space around energized electrical enclosures or equipment shall comply with the dimensions shown in Table 2-2 below.”
- *Delete: The second sentence which states “Space shall be provided for personnel access to parts that require examination, adjustment, servicing, or maintenance while energized.”
- Change: The previous third sentence from “Examples of such equipment include panelboards, switches, circuit breakers, motor control centers, controllers, controls on heating and air conditioning equipment, relay racks, test racks, and consoles” to ”Examples of such equipment include panelboards, disconnect switches, circuit breakers, and motor control centers.”
- *Add: The requirement “This access and working space shall be kept clear at all times for operation and maintenance personnel and may not be used for intermittent/incidental storage of nonpermanent equipment or furniture.”
- *Delete: The last sentence which states “If working space is not available as indicated below, work shall not be performed on or near energized equipment.”
- *Add: The following Note: “There are no minimum clearance requirements for electrical equipment mounted on wheels that can be easily moved for service access (e.g., equipment test racks, PDUs, etc.), given adequate space is provided for ventilation and wire terminations.”
- Under topic, “2.9 Servicing Electrical Equipment and Systems,” and under the subtopic “Modifications or Installations”:
- *Change: The last requirement from “Modifications or installations and documentation are to be performed by qualified personnel” to “Modifications or installations and documentation (using the form provided in Attachment A-2) are to be performed by qualified personnel.”
- Under topic, “2.12 Additional Requirements,” and under subtopic “Ground Fault Circuit Interrupters (GFCI)”:
- *Add: The following new requirements “Managers shall ensure that:
- Outlets outside external doors are weatherproof and GFCI protected.
- Rooftop maintenance outlets are weatherproof and GFCI protected.
- GFCI protection is installed on all 120-volt, 15 and 20 amp receptacles located within 6 ft of sinks, shower heads, eyewash stations and outside doors. No outlet is allowed within 3 feet of the vertical axis of shower heads or eye wash stations.”
- *Change: The requirement “Ground Fault Circuit Interrupter (GFCI) protection is provided for receptacles that supply 120 volts of alternating current (AC) in outdoor locations, on rooftops, in explosives areas, or in wet or damp indoor locations, such as near sinks, showers, or eyewashes” to “Ground Fault Circuit Interrupter (GFCI) protection is installed on all 120-volt, 15 and 20 amp receptacles located within 6 ft of sinks, shower heads, eyewash stations and outside doors. No outlet is allowed within 3 feet of the vertical axis of shower heads or eye wash stations.”
- *Add: The following new requirements “Managers shall ensure that:
- GFCI protection is provided in explosives areas where required by the Explosives Safety Manual (MN471011).
- Electrical equipment that is neither GFCI protected nor protected by suitable barriers is not brought within 6 ft from the vertical axis of the waterfall of a shower head or eyewash station.
- GFCI outlets are installed and operated in accordance with this section and the National Electrical Code, Article 210.8, except when specific testing/operations preclude its use. Contact ES&H coordinator or Safety Engineering for additional guidance.
- For new construction and receptacle system maintenance/repairs, comply with the latest changes to the SNL Facilities Design Standards Manual, Section 9.5.”
- *Delete: The following requirement “Managers shall ensure that portable GFCIs that plug into receptacles or extension cords that contain GFCIs are used where permanent GFCI protection is unavailable.”
- *Change: The last requirement from “Members of the Workforce who operate electrical equipment that utilizes GFCI protection shall trip-test the interrupter by using the test buttons on the unit prior to use and at least once per month. A record of these tests may be kept in a notebook or on a test record label, which are normally provided by manufacturers” to “Members of the Workforce who operate electrical equipment that utilizes GFCI protection shall trip-test the interrupter by using the test buttons on the unit at least once per month. A record of these tests may be kept in a notebook or on a test record label, which are normally provided by manufacturers. The AHJ may grant exceptions to the testing requirement for remote, unpopulated areas. Contact your ES&H coordinator to initiate this request.”
- Add: The following Note: “The use of the (GFCI) internal tester and use of a load or test meter to verify power interruption is the preferred method of testing a GFCI device. External testers may give misleading or erroneous results and, in some case, may be hazardous.”
Chapter 4:
- Under topic, “4.3 Safe Work Practices”:
- *Add: The following requirements under the subtopic “Modifications
or Installations”:
- Before using the equipment, the person performing the modification
shall ensure equipment that is in-house built, modified NRTL, or from
a manufacturer
that does not meet the requirements of an “Accepted Manufacturer” as
defined in the SNL
Electrical Equipment Approval Guidelines, is approved and documented using
the form in Attachment A-2, “Other Manufacturer Equipment, In-House Built Equipment
or Modified NRTL-Listed Electrical Equipment Approval Form."
- Before
using the equipment, the person performing the modification shall ensure that
modified and non-NRTL equipment is electrically checked by calibrated
equipment in accordance with SNL
CPR 100.3.1.
- *Delete: The following requirement under the subtopic “Modifications
or Installations”:
- Before using the equipment, the person performing the modification
shall certify that the equipment is safe to operate by signing the equipment
modification documents.
- Change: The nomenclature used in the requirement under
the subtopic “Use
of Listed Equipment” from “Non-Reputable
Manufacturer” to “Accepted Manufacturer,” and from “Non-Reputable
Manufacturer Equipment” to “Other Manufacturer
Equipment.”
- Add: Information in the requirement under the subtopic “Use
of Listed Equipment” to indicate that the nomenclature “Accepted
Manufacturer” is defined in the SNL Electrical Equipment Approval
Guidelines.
- *Change: The requirement under the subtopic “Documentation of Nonlisted Equipment” from “Equipment that is not listed by an NRTL shall be approved and documented using the form in Attachment A-1, “Reputable Manufacturer Unlisted Electrical Equipment Approval form” to “Equipment that is not listed by an NRTL shall comply with the requirements of the SNL Electrical Equipment Approval Guidelines and shall be approved and documented using the form in Attachment A-1, “Accepted Manufacturer Unlisted Electrical Equipment Approval form.”
- *Add: The following requirement under the subtopic “Documentation of Nonlisted Equipment”:
- Prior to use, modified and non-NRTL equipment shall be electrically checked by calibrated equipment in accordance with SNL CPR 100.3.1.
- Under topic, “4.5 Power Sources”:
- Change: The first Note listed under the subtopic “Design and Construction” from “Whenever possible, NRTL listed equipment should be purchased and used in the lab” to “Whenever possible, NRTL listed equipment should be purchased and used in the lab. For special testing applications, when the equipment is not available and shall be manufactured in-house, consult the SNL Electrical Equipment Approval Guidelines for non-NRTL equipment for additional guidance on incorporating engineered controls into the design of the equipment .”
- *Add: The following requirement to the end of the third paragraph under the subtopic “Safety Practices”:
- Use the Energized Work Decision Tool to determine the appropriate precautions and training requirements.
- Under topic, “4.13 Enclosed Electrical/Electronic Equipment”:
- *Change: The requirement in the second sentence from “Racks shall be inspected by a qualified inspector (refer to Attachment A-3, “Electrical Equipment Racks Approval Form.")” to “Racks shall be inspected by a qualified inspector in accordance with SNL Electrical Equipment Approval Guidelines (refer to Attachment A-3, “Electrical Equipment Racks Approval Form).”
References:
- Under topic, “Implementing Documents”:
- Add: The document “SNL, AOP 06-05, Electrical Equipment Approval Guidelines.”
Attachments:
- In Attachment A-1:
- Change: The nomenclature used from “Reputable Manufacturer” to “Accepted Manufacturer.”
- In Attachment A-2:
- Change: The nomenclature used from “Non-Reputable Manufacturer” to “Other Manufacturer,” and also indicate that the definition of “Accepted Manufacturer” is defined in the SNL Electrical Equipment Approval Guidelines.
October 9, 2006
Note: (*) asterisk denotes substantive change.
- Add: A review date to the header to indicate that an
ES&H Manual Self-Assessment (SA) checklist was completed on this
supplement.
- Add: Attachment A-1, “Reputable Manufacturer Unlisted
Electrical Equipment Approval Form.”
- Add: Attachment A-2, “Non-Reputable Manufacturer
Equipment, In-House Build Equipment or Modified NRTL-Listed Electrical
Equipment Approval Form.”
- Add: Attachment A-3, “Electrical Equipment Racks.”
- Change: Throughout the manual all references to Section
2.1 from “Primary Work Considerations” to “ Electrical Work Requirements – General.”
- Replace: Throughout the manual all occurrences of the
term “company sites” with “Sandia-controlled premises.”
- Change: Throughout the manual all occurrences of
organization “7122” to either “10322,” for Safety Engineering, or to “10327,”
for Industrial Hygiene, as applicable.
- Change: Throughout the manual all occurrences of
organization “7800” to “10800” – to indicate the current Facilities Management
and Operations Center.
- Change: Throughout the manual all occurrences of
organization “7134” to “8516” – to indicate the current Environmental
Management Department.
- Change: Throughout the manual all occurrences of
organization “7862” to “10861” – to indicate the current Facilities Electrical
and Fire Protection Engineering Department.
- Change: Throughout the manual all occurrences of
organization “7843” to “10842” – to indicate the current Electrical
Maintenance Services Department.
Chapter I:
- Under topic, “1.1 Purpose, Applicability, Scope, Ownership”:
- Delete: The following sentence from the subtopic
“Purpose” :
- This manual supplements MN471001, ES&H Manual, Chapter 4, Section
B, "Electrical Safety Practices".
- Change: The first bullet in the subtopic “Basis for
Requirements” from “National Electrical Code (NEC)
(National Fire Protection Association [NFPA] 70)” to
“National Electrical Code (NEC) (National Fire Protection Association [NFPA]
70), 2005.”
- Change: The second bullet in the subtopic “Basis for
Requirements” from “Electrical Safety Requirements for
Employee Workplace (NFPA 70E)” to “Electrical Safety
Requirements for Employee Workplaces (NFPA 70E), 2004.”
- Add: The following bullet in the subtopic “Basis for
Requirements”:
- DOE Order 430.1B, Real Property Asset Management
- Change: The subtopic titled “How to Use This Manual” to
“Organization of This Manual.”
- Delete: The sentence “Use the table below to help
determine what you need to read” from the subtopic “Organization of This
Manual.”
- Under topic, “1.2 Electrical Safety Committees”:
- *Change: The AHJ Pyramid (Figure 1-1), under the
subtopic “Authority Having Jurisdiction,” to reflect the current SNL
approval hierarchy to follow when any given level of authority cannot make
the necessary interpretation of codes and regulations.
- *Change: The first paragraph in the subtopic “SNL
Electrical Safety Committee Organization” from “Each VP whose division
engages in electrical work or whose personnel are exposed to electrical
hazards appoints one member and an alternate to the SNL ESC. The Metal
Trades Council is represented by one member and an alternate. The DOE
Kirtland Area Office (KAO) appoints a representative to coordinate
electrical safety concerns involving the SNL ESC and the DOE. Advisors may
be added by the committee as required to provide expertise in various
electrical safety areas. Contractor personnel shall be allowed to
participate on the committee” to “Each VP whose division engages in
electrical work or whose personnel are exposed to electrical hazards
appoints one member and an alternate to the SNL ESC. Advisors may be added
by the committee as required to provide expertise in various electrical
safety areas.”
- *Add: The following information in the subtopic “SNL
Electrical Safety Committee Organization”:
- The SNL Electrical Safety Committee is managed in two parts: The
Electrical Safety Standing Committee (ESSC) and the Electrical Safety
Functional Committee (ESFC). The ESFC reports to the ESSC.
- *Add: A new subtopic heading titled “Electrical Safety
Standing Committee,” in the topic “SNL Electrical Safety Committee
Organization” and move the following, existing, topic information to this
new subtopic:
- Each VP whose division engages in electrical work or whose personnel
are exposed to electrical hazards appoints one member and an alternate to
the SNL ESC. Advisors may be added by the committee as required to provide
expertise in various electrical safety areas.
- *Add: A new subtopic heading titled “Electrical Safety
Functional Committee,” in the topic “SNL Electrical Safety Committee
Organization” and then add the following requirements under this new
subtopic:
- Each division shall provide an electrical Subject Matter Expert to sit
on the ESFC. The Metal Trades Council is represented by one member and an
alternate. The DOE Sandia Site Office (SSO) appoints a representative to
coordinate electrical safety concerns involving the SNL ESC and the DOE.
Contractor personnel shall be allowed to participate on the committee.
- The ESFC will meet quarterly and will provide recommendations to the
ESSC on situational concerns, and shall assist the ESSC in carrying out
its charter. The ESFC reports to and is to be considered the Subject
Matter Expert for the ESSC.
- Change: The first subordinate bullet under the third
bullet in the topic “SNL Electrical Safety Committee Charter,” in the
subtopic “Responsibilities,” from “National Electric Code (NEC)” to
“National Electric Code (NEC) 2005.”
- Change: The second subordinate bullet under the third
bullet in the topic “SNL Electrical Safety Committee Charter,” in the
subtopic “Responsibilities,” from “National Electric Safety Code (NESC)” to
“National Electric Safety Code (NESC) 2006.”
- Change: The fourth subordinate bullet under the third
bullet in the topic “SNL Electrical Safety Committee Charter,” in the
subtopic “Responsibilities,” from “National Fire Protection Association
(NFPA 70E, Electrical Safety Requirements for Employee Workplaces)” to
“National Fire Protection Association (NFPA 70E, Electrical Safety in the
Workplaces) 2004.”
- Under topic, “1.3 Responsibilities of Individuals”:
- Change: The third sentence in the subtopic “Personnel
Responsibilities” from “Personnel must also report any
electrical shock to the Integrated Risk Management /Physical
Security/NMC&A Department (7123) by calling the Non-Emergency Hotline”
to “Personnel shall also report any electrical shock to the
OOPS non-emergency hotline - 311 or 844-0311 if outside SNL,” and remove the
period at the end of the sentence.
- *Add: A new topic titled “1.4 Electrical Safety Program”
with subtopic “Electrical Safety Program Principles,” consisting of ten
principles which employees working on or near electrical equipment are
required to adhere to.
Chapter II:
Note: Over 75% of this chapter is either new or has changed and
should be read in its entirety.
Chapter III:
- Under topic, “Switching Procedures”:
- *Add: The following requirement to the end of the first
paragraph in the subtopic “SNL/NM Switching Procedures”:
- The written procedure shall contain shock and flash Electrical PPE
requirements per Chapter 2 of this manual and NFPA 70E.
- *Change: The second to the last sentence in the
subtopic “SNL/NM Switching Procedures” from “Persons
performing switching operations shall wear approved clothing: head
protection; eye, face, and foot protection; and approved rubber insulating
gloves with protectors” to “Persons performing switching
operations shall wear approved flame retardant clothing as well as approved
head protection; eye, face, and foot protection; and approved rubber
insulating gloves with protectors in accordance with Chapter 2 of this
manual.”
- Under topic, “SNL/CA Switching Procedures and Operations Clearance”:
- *Change: The first sentence from “An
electrical operations clearance is the written or verbal permission given by
the controlling person who is responsible for the operation of the power
system” to “In addition to the requirements above, an
electrical operations clearance is the written or verbal permission given by
the controlling person who is responsible for the operation of the power
system.”
- Under topic, “Infrared Testing”:
- *Change: The third sentence from
“Persons working in proximity to exposed energized parts shall follow all
appropriate safety regulations (consult "Working on Energized Equipment (Hot
Work)" in Section 2.4, "Safe Work Practices")” to “Persons
working in proximity to exposed energized parts shall follow all appropriate
safety regulations prescribed in Chapter 2 of this manual.”
- Under topic, “Troubleshooting”:
- *Add: The following requirements after the first
sentence:
- All energy sources shall be brought to a safe state; for example,
capacitors shall be discharged and high capacitance elements shall be
short-circuited and grounded. All circuits and equipment must be
considered energized until opened, tagged, and/or locked according to an
approved procedure and should be proven deenergized by testing with an
approved testing device known to be in proper working order.
- *Add: The following requirement after the last
sentence:
- Approved Technical Work Documents per Chapter 2 of this manual are
required prior to commencing energized work.
- *Add: The following requirement at the
end:
- Personnel shall not work on energized circuits unless they are
qualified to do so, or, for training purposes, unless they work under the
direct supervision of a qualified person.
- Under topic, “Cleaning Insulators and Bushings”:
- *Add: The following requirements after the last
bullet:
- Comply with the requirements of Chapter 2 of this manual for working
on energized equipment. Shock and flash hazard analyses shall be
performed.
- Under topic, “Tree Trimming”:
- Add: The following bullet after the last
bullet:
- When trimming trees near live conductors, the employee should not work
with wet tools or ropes. Such equipment should be protected during rain
showers.
- Under topic, “Drilling or Digging Activities”:
- *Add: Four new paragraphs which address the “locating
and identifying of underground utilities,” prior to drilling or digging
activities. Items addressed include: Results of striking underground
utilities; Possible lack of identification on drawings; Sources to research;
Accurate identification and marking; Worker protection; Careful selection of
PPE (a requirement) and additional equipment (extra
protection).
- Under topic, “Construction Locations”:
- *Add: The following requirements:
- Temporary electrical installations shall be allowed during periods of
construction, remodeling, maintenance, repair, or demolition of equipment
or structures or for experiments and developmental work. Nonmetallic
sheathed cable shall not be used:
- As portable extension cords.
- Where subject to traffic of any type.
- Where subject to frequent flexing.
- As service entrance cable.
- Where prohibited by the NEC.
- Extension cord sets used on construction sites and used with portable
metal electric tools and appliances shall be of the three-wire type and
shall be designed for hard or extra-hard usage.
- *Add: The following requirements (bullets) after the
first original bullet:
- Receptacles used in damp or wet locations shall be approved for the
purpose.
- Receptacles installed outdoors (outdoors is considered a wet
location), shall be contained in a weatherproof enclosure.
- Temporary lights shall not be suspended by their electric cords unless
cords and lights are designed for this means of suspension.
- Under topic, “Mobile Equipment Operation”:
- *Add: The following requirements at the end:
- Operating equipment shall not come within 10 feet of high voltage
overhead wires energized to 50KV or less, and that distance shall increase
4 inches for every additional 10KV. This requirement may be waived if any
of the following conditions are met:
- If the vehicle is in transit with its structure lowered, the
clearance may be reduced to 4 feet. If the voltage is higher than 50KV,
the clearance shall be increased 4 inches for every additional 10KV.
- If insulating barriers are installed to prevent contact with the
lines, and if the barriers are rated for the voltage of the line being
guarded and are not a part of or an attachment to the vehicle or its
raised structure, the clearance may be reduced to a distance within the
designed working dimensions of the insulating barrier.
- If the equipment is an aerial lift insulated for the voltage
involved, and if the work is performed by a qualified person, the
clearance (between the uninsulated portion of the aerial lift and the
power line) may be reduced to the distance in table 3-2.
- *Add: A new topic titled “Live Line Tools” with
subtopics: Selecting; Inspection and Tests; and Cleaning. All subtopics
contain new requirements.
Chapter
IV:
- Under topic, “Scope”:
- *Add: The following requirement:
- When conflicts among electrical codes, recognized industry standards,
DOE orders, or regulations arise, the requirement that addresses the
particular hazard and provides the greater personnel safety protection
shall govern.
- Under topic, “Safe Work Practices”:
- *Change: The fourth bullet in the subtopic “Rules”
from “Consider all electrical equipment, testing devices,
and conductors energized until tested or otherwise determined to be
de-energized” to “Consider all electrical equipment,
testing devices, and conductors energized until tested or otherwise
determined to be de-energized per section 2.4, Establishing an Electrically
Safe Work Condition.”
- Change: The third sentence in the subtopic “Personal
Protective Equipment” from “Rated for 500 volts AC, they
may be used without the leather protectors for up to 250 volts”
to “Rated for 500 volts AC, they may be used without the
leather protectors.”
- Change: The fourth sentence in the subtopic “Personal
Protective Equipment” from “Gloves may be obtained from Lab
Safety Supply, Inc” to “Gloves may be obtained from Border
States Electric.”
- *Replace: All the information in the subtopic “Ground
Fault Circuit Interrupters (GFCI)” with the following requirement:
- GFCI outlets shall be installed and operated in accordance with
section 2.12, “Additional Requirements” and the National Electrical Code,
Article 210.8 except when specific testing/operations preclude its use.
Contact ES&H coordinator or Safety Engineering for additional
guidance.
- *Delete: The following requirements (the first and
third sentences) in the subtopic “Electrical Equipment Near Water Sources”:
- Do not bring electrical equipment or outlets within 3 ft of the
vertical axis of shower heads or eyewash stations.
- Shower or eyewash stations must be a minimum of 12 ft from existing
building electrical distribution equipment (such as panelboards).
- *Change: The first sentence in the subtopic “Servicing
Electrical Equipment” from “Perform all work with equipment
in a de-energized state when feasible” to “Perform all work
with equipment in a de-energized state.”
- *Add: The following requirement and Note after the
first sentence in the subtopic “Servicing Electrical Equipment”:
- All energized work shall meet the requirements listed in chapter 2.1
of this manual.
- Note: Working on energized equipment for convenience or by custom is
not appropriate energized work.
- Change: The first sentence in the subtopic
“Troubleshooting and Emergency Work Versus Experimentation”
from “Accident reports indicate that troubleshooting is a
higher hazard risk” to “Accident reports indicate that
troubleshooting is a high hazard task.”
- *Add: The following requirement after the fourth
sentence in the subtopic “Troubleshooting and Emergency Work Versus
Experimentation”:
- The worker must always anticipate the unexpected when troubleshooting
equipment.
- Change: The previous fifth sentence in the subtopic
“Troubleshooting and Emergency Work Versus Experimentation”
from “When emergency electrical repairs are required (for
example, for power source device failure), do not compromise the safety of
personnel to maintain continuity of the affected experiment”
to “When emergency electrical repairs are required (for
example, for power source device failure), do not compromise the safety of
personnel to maintain continuity of the affected experiment – the maximum
safety of personnel still needs to be ensured.”
- Add: The following sentence after the previous fifth
sentence in the subtopic “Troubleshooting and Emergency Work Versus
Experimentation”:
- The practice of using materials or components for purposes other than
originally designed, needs special consideration in their use,
identification, personal protection, and equipment protection.
- *Add: The following Note and requirement after the
first sentence in the subtopic “Use of Listed Equipment”:
- Note: The “CE” label common on many electronic devices is NOT an
approved NRTL. For a complete list of approved testing labs, See Section
2.4, “Safe Work Practices”.
- All new equipment purchased shall be NRTL listed whenever available.
The manufacture and use of in-house equipment shall be minimized.
- *Replace: All the information in the subtopic
“Documentation of Nonlisted Equipment” with the following requirement:
- Equipment that is not listed by an NRTL shall comply with the
requirements of the SNL Electrical Equipment Approval Guidelines.
- Under topic, “4.4 Preventive Maintenance”:
- *Add: The following requirement after the second
sentence in the subtopic “Scope”:
- Consult the equipment manual for specific maintenance requirements and
intervals.
- *Change: The first requirement (bullet) in the subtopic
“Work Practices” from “Operate and maintain test equipment
according to the manufacturer's specifications” to “Operate
and maintain all equipment according to the manufacturer's specifications.”
- Under topic, “4.5 Power Sources”:
- Add: The following Note after the second sentence in
the subtopic “Design and Construction”:
- Note: Whenever possible, NRTL listed equipment should be purchased and
used in the lab. For special testing applications, when the equipment is
not available and must be manufactured in-house, consult the SNL
Electrical Equipment Approval Guidelines checklist for non-NRTL equipment
for additional guidance on incorporating engineered controls into the
design of the equipment.
- *Add: The following requirement after the third bullet
in the subtopic “Design and Construction”:
- Provide a mechanism which will automatically discharge any residual
energy (i.e. capacitance) prior to accessing the circuit components.
- *Change: The first sentence in the subtopic “Safety
Practices” from “Before working in a power supply enclosure
or an associated equipment enclosure, personnel should take the following
precautions” to “Before working in a power supply enclosure
or an associated equipment enclosure, personnel shall comply with the
requirements of section 2.4 of this manual and take the following additional
precautions.”
- *Delete: The following requirement (first bullet) in
the subtopic “Safety Practices”:
- *Add: The following requirement as the first bullet in
the subtopic “Safety Practices”:
- Establish an electrically safe work condition.
- *Delete: The following information and requirements in
the subtopic “Safety Practices,” which consist of the last sentence in the
third paragraph and the three associated bullets:
- Depending on the results of the analysis, any of the following may
apply:
- If the analysis indicates that the current is above 5 mA or the
energy is above 10 J, then the work is considered to be energized work
and must be performed in accordance with Section 2.4, Safe Work
Practices.
- If the analysis indicates that the current is between 0.5 mA and 5
mA and between 0.25 and 10 J, then the worker may be exposed to a
secondary hazard (for example, startle reaction) that must be mitigated.
- If the analysis indicates that the current is below 0.5 mA and below
0.25 J, then the worker exposure is minimal and no special precautions
are required.
- *Add:The following requirement to the end of the third
paragraph in the subtopic “Safety Practices”:
- Use the “Energized Work Decision Tool” to determine the appropriate
precautions and training requirements.
- Under topic, “4.6 Capacitors and Capacitor Banks”:
- *Add: The following requirement to the end of the
fourth sentence in the subtopic “Safety Practices”:
- This shall also be included in the appropriate TWD.
- Change: The first bullet in the subtopic “Periodic
Inspections” from “At SNL/NM, refer to MN471001, ES&H
Manual, Chapter 10, Section D, "Polychlorinated Biphenyl (PCB) Management",
or contact the Hazardous & Solid Waste Pollution Prevention Department
(7134)” to “At SNL/NM, refer to MN471001, ES&H
Manual, Chapter 10, Section D, "Polychlorinated Biphenyl (PCB)
Management", or contact the Regulated Waste/Nuclear Material Disposition
Department (10339).”
- Under topic, “4.7 Inductors and Inductor Systems”:
- *Change: The first sentence in the subtopic “Hazards”
from “Workers should be aware of the potential health
hazard from magnetic fields. Personnel from the Industrial Hygiene &
Safety Programs (7122) or the Health and Safety Department (8517) should be
contacted to survey the work area” to “Workers shall be
aware of the potential health hazard from static magnetic fields. Personnel
from the Industrial Hygiene (10327) or the Health and Safety Department
(8517) should be contacted to survey the work area.”
- *Change: The first sentence in the first warning in the
subtopic “Safety Practices” from “Use appropriate warning
signs to prevent persons with pacemakers or similar devices from entering
areas that contain magnetic fields in excess of 0.00051 Tesla” to
“Use appropriate warning signs to prevent Members of the Workforce
from exceeding the following threshold limit values:
- Members of the Workforce with pacemakers: 0.0005 Tesla.
- Whole body ceiling: 2 Tesla
- Extremity ceiling: 5 Tesla
- Body eight-hour time weighted average: 0.06 Tesla
- Extremity eight-hour time weighted average: 0.6 Tesla
- Change: The first sentence in the second warning in the
subtopic “Safety Practices” from “Personnel exposure to
magnetic fields of 0.1 Tesla should be restricted” to “The
following practices are recommended when working with all inductors or
inductor systems.”
- Under topic, “4.8 Electrical Conductors and Connectors”:
- Add: The following two bullets after the fourth bullet
in the subtopic “Selection”:
- Use NRTL listed or labeled conductors when available.
- Provide engineering calculations to support overrating of conductors
for any application.
- *Change: The first sentence in the subtopic “SNL Color
Code” from “Follow SNL's color code when installing cords
and plugs or connecting wiring to the load side of power disconnects”
to “SNL's color code shall be followed when installing
cords and plugs or connecting wiring to the load side of power disconnects.”
- *Change: The requirement (first bullet) in the subtopic
“SNL Color Code” from “Red, black, and blue are always
energized conductors” to “Red, black, and blue are always
energized conductors in 120/208V applications.”
- *Add: The following requirement (after the first
bullet) in the subtopic “SNL Color Code ”:
- Brown, orange and yellow are always energized conductors in 277/480V
applications.
- Under topic, “4.10 Batteries and Battery Banks”:
- Add: The following battery hazard information to the
paragraph in the subtopic “Hazards ”:
- Note that batteries are located in a variety of applications in the
lab, including Uninterruptible Power Supplies. Specific hazards include:
- Generation of potentially explosive gas mixtures during charge and
discharge.
- Heating/explosion during excessive charge/discharge.
- Cell reversal (a condition in which a cell is discharged beyond its
capacity, becoming a load on the remaining cells) can cause excessive
heating/gas production if the cell remains in service.
- Acid splash from electrolyte.
- Chemical exposure hazards from lead, antimony, arsenic and other
substances commonly used in lead-acid storage batteries.
- Under topic, “4.11 Temporary Wiring”:
- *Change: The requirement (first bullet) in the subtopic
“Safety Practices” from “Use permanent wiring techniques
for experimental setups when feasible” to “Use permanent
wiring techniques for long term (greater than 90 days) experimental setups
when feasible.”
- Under topic, “4.12 Cable Tray Applications”:
- *Add: The following requirement in the subtopic
“Requirements ”:
- Contact Safety Engineering for assistance in assessing and determining
suitability of cable tray use.
- Under topic, “4.13 Enclosed Electrical/Electronic Equipment”:
- *Add: The following requirement to the end of the first
paragraph:
- Racks shall be inspected by a qualified inspector in accordance with
SNL Electrical Equipment Approval Guidelines.
- *Add: The following requirement (bullet) after the last
bullet in the subtopic “Enclosure Grounding and Bonding”:
- The grounding/bonding conductor shall be sized appropriately for the
application. Contact Safety Engineering (10322) for additional guidance on
conductor sizing.
- *Add: The following requirement to the end of the
second paragraph in the subtopic “Rack Power Distribution”:
- Ensure the required power demand of the rack-mounted equipment does
not exceed the rating of its facilities branch circuit breaker.
- *Add: The following requirements after the second
paragraph in the subtopic “Rack Power Distribution”:
- Rack power distribution components or assemblies shall be listed by a
NRTL, or be evaluated by an authorized equipment inspector.
- If the rack’s power distribution is accomplished through the use of a
power strip, observe the following requirements:
- The power strip shall be NRTL listed or labeled.
- The power strip shall be designed for mounting.
- The power strip shall be permanently mounted (no cable tie-wrap
mounting or other non-permanent method).
- The power strip shall be rated for the expected power in the rack.
- The power strip may not be modified in any manner.
- Power strips may not be connected in series.
- *Change: The second sentence in the subtopic
“Conductors and Cables Specific Requirements” from “Power
and signal wires should be routed separately within a chassis”
to “Power and signal wires shall be routed separately
within a chassis.”
- Add: The following Note after the last bullet in the
subtopic “Flexible Cables”:
- Note: Whenever possible, permanent wiring should be used.
- *Add: The following requirements after the first
paragraph in the subtopic “Strain Relief”:
- The use of type NM (Romex) cable clamps on flexible cords and cables
is not permitted. Use listed or labeled clamps. The use of any metal clamp
or other means that may cause undue stress on cables within or external to
instrument racks is not allowed.
- *Change: The first bullet in the subtopic “Connections,
Connectors, and Couplings” from “There should be no exposed
current-carrying parts except the prongs, blades, or pins”
to “There shall be no exposed current-carrying parts except
the prongs, blades, or pins.”
- *Change: The first sentence in the subtopic “Hazard
Marking Requirements” from “All enclosures containing
exposed energized circuits over 600 volts nominal should be marked "Danger
High Voltage Keep Out" with a label that is permanent” to
“All enclosures containing exposed energized circuits over 600 volts nominal
shall be marked "Danger High Voltage Keep Out" with a label that is
permanent.”
- Under topic, “4.14 Lasers and X-Ray Equipment”:
- *Add: The following requirements after the last bullet:
- Maintenance on laser systems shall be performed in accordance with
Chapter 2 of this manual. Only qualified individuals shall perform
maintenance on laser systems.
Chapter V:
- Under topic, “5.1 Hazardous Areas”:
- Delete: The second sentence from the paragraph in the
subtopic “Assistance” which states:
- Fire protection and electrical safety considerations provide criteria
for a specific operation.
- Add: The following sentence to the end of the paragraph
in the subtopic “Assistance”:
- Additional information on equipment usage in hazardous areas is
available in the National Electrical Code (NFPA 70), 2005; The DOE
Electrical Safety Handbook (DOE-HDBK-1092-2004) and NFPA 495 (Explosives
Material Code – 2006).
- Add: The following Notes below the paragraph in the
subtopic “Assistance”:
- Notes:
- 1. NEC 500.8 (A)(1) National Electrical Code Handbook, 2005, Early
et al, editors; NFPA, Quincy, MA.
- Under topic, “5.2 Explosives Areas”:
- *Change: The requirement (second sentence in the
paragraph) in the subtopic “Substitute Equipment” located under the topic
“Assigning Hazard Class and Group” from “Substitute
equipment shall be verified as intrinsically safe by the Radiation
Protection & Laboratory Services Department (7132) and the Hazardous
& Solid Waste Pollution Prevention Department (7134) at SNL/NM or the
Health and Safety Department (8517) at SNL/CA” to
“Substitute equipment shall be verified as intrinsically safe by the
Facilities Electrical and Fire Protection Engineering Department (10861) at
SNL/NM or the Health and Safety Department (8517) at SNL/CA.”
- *Change: The first and second sentences in the subtopic
“Wiring” located under the topic “Assigning Hazard Class and Group”
from “Wiring from the permanent premises wiring to process
equipment and instrumentation should be rated for the actual environment.
This may include non-hazardous-rated ordinary locations or occupancies”
to “Wiring from the permanent premises wiring to process
equipment and instrumentation shall be rated for the actual environment.
This shall include non-hazardous-rated ordinary locations or
occupancies.”
- Change: “NFPA 78” to “NFPA 780” in the
first sentence in subtopic “Lighting Protection,” under the topic
“Explosives Storage Buildings.”
Glossary:
- Add: The following new definitions:
- *Appropriate Energized Electrical Work. Work on
circuits >50 volts which, if deenergized, would result in an increased
or additional hazard or if de-energizing the circuit is not feasible due
to equipment design or operational limitations. See also Critical Systems.
- *Electrically Safe Work Condition. A condition
achieved when an electrical worker has identified and eliminated all
sources of electrical energy, visually verified those sources are removed,
locked out and tagged out the equipment/system, verified those sources are
de-energized using a tested voltmeter, and grounded the conductors or
parts if necessary. This process is specifically identified in NFPA 70E,
Section 120.1.
- *Energized Electrical Work. Any entry for any reason
into the limited approach boundary as defined in chapter 2 of this manual.
- *Flash Protection Boundary. An approach limit at a
distance from exposed live parts within which a person could receive a
second degree burn if an electrical arc flash were to occur. This boundary
signifies the requirement for flash PPE.
- *Limited Approach Boundary. An approach limit at a
distance from an exposed live part within which a shock hazard exists. No
unqualified electrical worker may enter this area unless escorted by a
qualified electrical worker and made aware of the hazards involved.
- *Nationally Recognized Testing Laboratory (NRTL). A
laboratory specifically designated by the US Occupational Safety and
Health Administration to test and list equipment as safe for its intended
use (OSHA approved NRTLs).
- *Prohibited Approach Boundary. An approach limit at a
distance from an exposed live part within which work is considered the
same as making contact with the live part.
- *Restricted Approach Boundary. An approach limit at a
distance from an exposed live part within which there is an increased risk
of shock, due to electrical arc over combined with inadvertent movement,
for personnel working in close proximity to the live part. This boundary
signifies the requirement for shock PPE. No unqualified electrical worker
may cross this boundary under any circumstance.
- *Working Near (live parts). Any activity inside the
limited approach boundary.
- Delete: The following definitions:
- *Energized Work. Any work performed on or close
enough to exposed parts of electrical circuits and equipment operating at
50 V or more for a hazard to exist.
- *NRTL. Nationally Recognized Test Laboratory.
References:
- Add: The topic “Requirements Source Documents” after the
line “* Indicates a substantive change.”
- Under topic, “Requirements Source Documents”:
- *Change: The requirement source document
from “ANSI C2, National Electrical Safety Code,
1997” to ANSI C2, National Electrical Safety Code,
2006.”
- *Delete: The requirement “ANSI C39.1, Safety
Requirements for Electrical and Electronic, Measuring and Controlling
Instrumentation, 1992.”
- *Replace : “ DOE M 440.1-1, DOE
Explosives Safety Manual” with “DOE M 440.1-1A, DOE Explosives Safety
Manual,” to be in agreement with the current requirements in Section J,
Appendix G.
- *Replace : “ DOE O 420.1, Facility
Safety” with “DOE O 420.1B, Facility Safety,” to be in agreement with the
current requirements in Section J, Appendix G.
- *Change: The requirement source document
from “DOE-HDBK-1092-98, DOE Electrical Safety
Handbook, January 1998” to “DOE-HDBK-1092-2004,
DOE Electrical Safety Handbook, 2004.”
- *Change: The requirement source document
from “NFPA 70, National Electrical Code (NEC),
1999” to “NFPA 70, National Electrical Code (NEC),
2005.”
- *Delete: The requirement “NFPA 70B, Electrical
Equipment Maintenance, 1998.”
- *Change: The requirement source document
from “NFPA 70E, Electrical Safety Requirements for
Employee Work Places, 2000” to “NFPA 70E,
Electrical Safety Requirements for Employee Work Places, 2004.”
- *Change: The requirement source document
from “NFPA 495, Explosive Material Code, 1996”
to “NFPA 495, Explosive Material Code, 2006.”
- Add: The topic “Implementing Documents” above the line
“Sandia National Laboratories.”
- Under topic, “Implementing Documents”:
- Add: The document “SNL, CPR400.1.1.31, MN471011,
Explosives Safety Manual."
September 8, 2006
* Indicates a substantive change
Chapter 2, “General Requirements,” was revised to:
- In the footer throughout,
- Change: Email Contact info from “Mark McNellis, Linda
Gillis” to “Mark McNellis, Al Bendure.”
- Under topic, “Qualifications and Training, under sub-topic, “Training":
- *Add: The following requirement:
“Managers shall
verify that individuals responsible for developing and conducting
job-specific electrical training have the appropriate education, training,
and skills to discharge this responsibility. See CPR400.1.1/MN471001,
ES&H Manual, Chapter 11, “ES&H Training” for instructor
qualification requirements.”
Administrative Changes Only
July 19, 2006
This Manual was revised to:
- Change: At SNL/NM, the subject matter expert from Jeff
Downs to Mark McNellis throughout the entire document.
- Change: At SNL/CA, the California counterpart from Mike
Frisch to Herman Armijo throughout the entire document.
- Change: References throughout the entire document from "
MN471001, ES&H Manual, Section
4C, "Lockout/Tagout for Hazardous Energy Control,"and GN470037,
Lockout/Tagout Procedure for the Control of Hazardous Energy to
"MN471001, ES&H Manual, Section 4C, "Lockout/Tagout (LOTO)," and "GN470037,
Administrative Control Procedure," respectively.
November 16, 2005
Note: The following changes, although substantive, are being
made without formal review from the ES& Manual Committee and the General
Reviewers, at the request of Tom Hunter via the “ESH CPR Steering Team Checklist
Responses”.
Chapter 1 "Introduction," was revised to:
(*Indicates a substantive change)
- *Add: “SNL Safety Engineering Department
Manager” to replace “manager” in Sect. 1.1, Records,
above first table section.
- *Add: “Senior Managers” to Sect. 1.1, Records, in table
section for Department Managers, in three places.
- *Add: “Senior Managers” to Sect. 1.3, Responsibilities,
in heading for Center Director and others, in one place.
- *Add: “Senior Managers” to Sect. 1.3, Responsibilities,
in text of first paragraph for Center Director and others, in one place.
Note: The following changes, although substantive,
are being made without an issue letter change and at the request of Tom Hunter
via the “ESH CPR Steering Team Checklist Responses.”
Note: An asterisk (*) indicates a substantive change.
Chapter 2 "General Requirements," was revised to:
- *Add: “department” to precede “manager” in Sect. 2.2,
Qualification and Training, in three places.
- *Add: department” to precede “manager” in Sect. 2.10,
Personal Protective Equipment, in two places.
Administrative Changes Only
June 29, 2005
This document was administratively revised to:
- Change: Executive Policy Sponsor from Les Shephard to
Frank Figueroa
Administrative Changes Only
August 3,
2004
This section was changed to:
- Add. The topic, “Applicability,” to identify the current audience.
- Under the topic, “Scope”:
- Change. Information from the topic area referencing the current
audience to the topic, “Applicability.”
February 12, 2001
This manual was changed to:
Add:
- To Section 1.1 "Basis for Requirements"
- NFPA 70E
- DOE Order 440.1A
- To Section 1.2 "Authority Having Jurisdiction"
- The SNL ESC serves as the primary advisor to the AHJ on issues relating
to electrical safety.
- To Section 1.2 "Charter"
- Under 'Responsibilities' add a bullet for NFPA 70E, Electrical Safety
Requirements for Employee Workplaces.
- To Section 2.1 Primary Work Considerations - "Common Electrical Risks"
- Add after first paragraph: Electrical shock can be fatal to the fetus of
pregnant workers. Remember to evaluate the electrical hazards when the SNL
Reproductive Hazards Protection Program is implemented for the work site.
- To Section 2.2 "Recommended Training"
- To Section 2.3 Work Procedures, "Written Procedures Are Required"
- Add next to last paragraph: Obtain a Sandia hidden hazards penetration
permit (HHPP) from your division ES&H Team before performing work that
penetrates concrete walls and/or floors having a depth greater than 2
inches. Follow the guidance in ES&H Manual (MN471001), Section
4H.
- To Section 3.0 "Facility Specific Requirements"
- Add section titled, "Drilling or Digging Activities".
- To Section 4.3 "Use of Listed Equipment"
- 'and documentation' after "management acceptance requires approval".
- To Section 4.3 Documentation of Nonlisted Equipment under"Document
nonlisted equipment as follows."
- Add 'or documentation' to the end of the second sentence.
- Add a third sentence about documentation.
- Add a sixth sentence about electrical safety approved stickers.
- Add a second paragraph about "Other non-NRTL listed equipment"
- Add new topic titled "Temporary Equipment Supporting Experiments."
- To Section 4.3 "Personal Protective Equipment"
- Add statement about Class 00 rubber electrical gloves.
- To Section 4.3 "Servicing Electrical Equipment"
- Add Note as final paragraph.
- To Section 4.3 "Troubleshooting and Emergency Work Verses Experimentation"
- References
- Add: DOE-HDBK-1092-98, DOE Electrical Safety Handbook, January 1998.
Change:
- To Section 1.2 "Authority Having Jurisdiction"
- SNL ESC to Manager responsible for SNL Electrical Safety.
- AHJ pyramid – 3rd level: Industrial Hygiene & Safety Programs
Department
- To Section 1.2 "Working on Energized Electrical Equipment"
- Wording to include "second person" and "Second Person Responsibilities."
- To Section 1.3 "Second Person Responsibilities"
- Change first bullet under "Specific responsibilities include:"
- To Section 2.9 "Authority Having Jurisdiction"
- To Section 4.3 "Electrical Equipment Near Water Sources"
- Change Note to read the same as 2.9.
- To Section 4.3 "Emergency Work Versus Experimentation"
- Change title of 4.3 to Troubleshooting and Emergency Work Versus
Experimentation
- To Section 4.12 "Cable Tray Applications"
- Replace with the excerpt from the DOE Electrical Safety Handbook.
- To Section 5.1 "Hazardous Areas"
- Change reference to Fire Protection.
- Confined Space, Reference "appropriate division ES&H team."
- References:
- Change dates: ANSI C1, 1999; ANSI C2, 1997; NFPA 70, 1999; NFPA 70B,
1998; NFPA70E, 2000; NFPA 495, 1996; NFPA 780, 1997.
- Glossary
- Change the definition of "Safety Watch" to: A person whose
specific duties are to observe the workers and operations being performed,
prevent careless acts, quickly de-energize the equipment in emergencies,
and alert emergency rescue personnel. A safety watch shall be within both
sight and hearing, and less than 50 ft from the worker. When overhead work
is performed, the safety watch shall be within 50 ft of the base of the
lifting device. The safety watch shall have no other duties that preclude
observing and rendering aid if necessary.
Delete:
- In Section 1.1, "Basis for Requirements"
- Delete DOE Order 5480.4
- Delete Extension Cord Tests from "Department Manager Requirements."
- To Section 1.1 "Records"
- Delete last 2 rows in Department Manager table.
- To Section 1.2 "SNL Electrical Safety Committee Organization"
- To Section 1.3 "Management Responsibilities"
- To Section 2.4
- Delete Safety Watch (this is an unnecessary duplication)
- To Section 4.3 "Documentation of Nonlisted Equipment under "Document
nonlisted equipment as follows."
- Delete "Purchased" and R&D in the first sentence.
- Delete "or department" and "test data" in the third sentence.
- Delete the second paragraph.
- To Section 4.3, "Electrical Equipment Near Water Sources"
- To Section 4.6, "Capacitors, Safety Practices" 9th bullet:
- Delete "certified, tested, and."
- References
- DOE: delete last two on list.
May 27, 1999
This manual was changed to:
- Update: training requirements as follows:
- Electrical Safety Awareness training for team supervisors, department
managers, project leaders, or other persons-in-charge is required only when
they are actually exposed to the same hazards as the workers they supervise.
- Delete ELC 109 and ELC 110.
- Add ELC 119 (which combines the training previously covered in the two
deleted courses cited above).
- Delete: the following guidelines for selecting and using extension
cords:
- Use extension cords rated for the use environment.
- Do not use an extension cord in excess of its rated ampacity.
- Use only a single extension cord to supply a temporary power tap.
- Do not connect temporary power taps (commonly called power strips or
surge protectors) in series.
- Remove extension cords, temporary power taps, and flexible cords
immediately upon completion of the work.
- Extension cords shall be tested annually by a PIC designee. Tests will
be documented in department files, and tested cords may be identified by
color-coded tape. Cords in fixed, protected locations do not have to be
inspected until they are moved.
- Revise: the discussion of extension cords to include temporary power
taps (power strips).
- Select power strips with a sufficient number of outlets and cord length
to supply the task.
- Maintain a continuous equipment grounding conductor (third wire) in all
extension cords.
- Do not use extension cords or power strips as a substitute for permanent
wiring. Note: Extension cords and power strips may be used
temporarily where a convenient outlet is not available and must be removed
upon completion of work. Note: Power strips that provide required
surge protection for equipment are not considered temporary wiring.
- Use extension cords and power strips only for the loads, environments,
and types of applications specified by the manufacturer.
- Do not use an extension cord or power strip in excess of its rated
current. Note: Extension cords used in series cannot be operated at
the rated current. They will overheat
- Delete: text referring to the Facilities High Voltage ES&H SOP,
SP471158.
- Update: the reference list as follows:
- Delete DOE Order 5480.4
- Add DOE O 440.1A.
Marc Williams, mwilli4l@sandia.gov
Darrell Fong, dfong@sandia.gov
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