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Policy Area

ESH-Environment Safety & Health

Procedure Number

ESH100.2.IH.9

Procedure Title

Enter Confined Spaces Safely

Procedure Manager

HOOPER, LISA Z.

Status

Active

Subject Matter Expert

  • Paul E. Giering
  • Maureen Mccullough Ainslie (CA)

Applicability, Exceptions, and Consequences

This procedure applies to all Members of the Workforce who participate in activities involving confined spaces and telecommunication field installations at all Sandia-controlled premises. 

All sites follow SNL/NM requirements unless specified otherwise in this procedure.  A site (e.g., Tonopah Test Range, or Pantex) may use equivalent methods, services, and materials, if pre-approved by the Confined Space Subject Matter Expert.

This procedure does not apply to:

  • Excavations, such as trenches.
  • Underground construction, such as a tunnel, shaft, chamber, and/or passageway.

Exceptions to, or deviations from this procedure must be approved through the Executive Policy Sponsor or Policy Area Manager, if delegated. Click here to view Contacts for Corporate Policies, Processes, and Procedures. See CG100.1.7, Request an Exception to a Policy, Process, or Procedure, for directions on how to obtain an exception to this procedure.

Granting or permitting exceptions or violations of policy, process, or procedure without authority, regardless of position or title, may be cause for disciplinary action up to and including termination of employment. Violating a policy, process, or procedure may be cause for disciplinary action up to and including termination of employment.

IMPORTANT NOTICE: A printed copy of this document may not be the document currently in effect. The official version is located on the Sandia National Laboratories Sandia Restricted Network (SRN).

Procedure Overview

This procedure describes requirements for identifying, classifying, and entering both non-permit and permit-required confined spaces.

Procedure Requirements

Training

Activity Responsible Individual Required Action
Ensure Required Training Is Completed Managers

Ensure that Members of the Workforce complete the required training identified in ESH100.2.IH.9 prior to performing the indicated work activity or fulfilling the indicated role.

Note: See Sandia corporate procedure HR100.2.1, Identify and Complete Sandia Required Training for all Members of the Workforce.

Identifying and Classifying a Confined Space

Step Responsible Individual Required Action
1 Space owners Identify areas not previously evaluated that may meet the definition of a confined space.
2 Space owners

Contact the division ES&H team industrial hygienist to determine if an area is a confined space, and if so,

  • Determine whether it is a non-permit confined space or permit-required confined space, and
  • Determine entry conditions for permit-required confined spaces, which include entries under C5 – Alternate Procedures, or C7 – Reclassification.
3 Confined space owners Incorporate requirements for permit entry—including C5 – Alternate Procedures and/or C7 - Reclassification entry options— into applicable work control documents, if the space owner or his designee enters and conducts work inside permit-required confined spaces.

Signage

Activity Responsible Individual Required Action
Inform Members of the Workforce of Confined Spaces Confined space owners Inform Members of the Workforce of the existence and location of confined spaces by posting signs or by using other equally effective means.
Post Signs Confined space owners

Post the appropriate sign (i.e., or permit-required). 

At SNL/NM:

  • SF 2001-NPS (7-2009), SNL/NM Non-Permit Confined Space Caution Sign (MS Word/PDF).
  • SF 2001-NPC (7-2009), SNL/NM Permit-Required Confined Space Warning Sign (MS Word/PDF).

At SNL/CA:

  • SC 2001-NPA (7-2009) SNL/CA Non-Permit Confined Space Caution Sign Posting (MS Word/ PDF).
  • SC 2001-PCS (7-2009), SNL/CA Permit-Required Confined Space Warning Sign (MS Word/PDF).
Use Equally Effective Means Confined space owners Contact the division ES&H team industrial hygienist to determine other equally effective means to indicate the existence, location, and baseline classification (i.e., permit-required or non-permit) of spaces in lieu of signs.
Maintain Signs or Other Effective Means of Identification Confined space owners Maintain, update, or replace signs as necessary (e.g., replace missing or defaced signs, and update work control procedures).
Interpret the Absence of Signage Members of the Workforce
  • Regard signs as the principal method of warning.
  • Do not interpret the absence of signage as an indication that an area is not a confined space if the area otherwise appears to qualify as a confined space.
  • Consult the division ES&H team industrial hygienist for an evaluation of the area, if unsure whether a space is a confined space.

Obtaining a Permit for Entry to Permit-Required Confined Spaces

Activity Responsible Individual Required Action

Obtain an Entry Permit 

 

 Managers Ensure that Members of the Workforce assigned to participate in permit-required confined space entries-- as entrant, attendant or supervisor authorizing entry (SAE)-- comply with the requirements below for confined space entry.

Obtain an Entry Permit 

 

 Supervisor authorizing entry (SAE)

Contact the confined space owner to identify the following:

  • Current status of permit-required confined spaces (e.g., decommissioned steam pit may no longer be a permit-required confined space).
  • Modifications/alterations to permit-required confined spaces (e.g., a space retrofitted with nitrogen gas lines may add a new hazardous condition to mitigate or eliminate).
  • Conditions or activities that may adversely impact permit-required confined space entry (e.g., impairment of egress due to elimination or sealing of an access portal).

Obtain an Entry Permit 

 

 SNL/NM Member of the Workforce
  • Contact the division ES&H team industrial hygienist  prior to the initiation of entry operations, when a hazard may be introduced to the space that was not previously evaluated during the initial space classification. Examples of such hazards include:
    • Hot work, including welding, cutting and/or brazing.
    • Use of hazardous chemicals (including gases).
  • Obtain SF 2001-CSE, Confined Space Entry Permit by initiating the on-line permit issuance process.
  • Use SF 2001-CSS, Confined Space Permit Sign-In/Sign-Out Sheet for Emergency Response when additional entrants are identified after the online portion of the permit has been completed.

Obtain an Entry Permit 

 

 SNL/CA Member of the Workforce
  • Contact the division ES&H team industrial hygienist to evaluate hazards and determine safety requirements for each confined space entry.
  • Obtain SC 2001-CSE, Confined Space Entry Permit by accessing this link.

Preparing for Entry into Permit-Required Confined Spaces

Step Responsible Individual Required Action
1 Supervisor authorizing entry (SAE) Ensure entrants or attendants are current with required training.
2 SAE

Conduct a pre-job briefing with all entrants and attendants to review:

  • Work to be performed and any prohibited activities.
  • Anticipated hazards, including signs and symptoms of exposure to the hazards.
  • MSDSs, attached to the permit, for hazardous chemicals to be used in the space.
  • Hazard control measure.
  • Rescue and emergency notification procedures.
3 SAE Complete the required fields on the permit in the required sequence.
4 SAE Establish a means (e.g., telephone, cellular phone, or two-way radio) at the entry site to summon rescuers.
5 SAE

Obtain the appropriate retrieval apparatus (or system):

  • At SNL/NM, contact the confined space entry/equipment issuance contact.
  • At SNL/CA, contact the division ES&H team industrial hygienist.
6 SAE
  • Conduct pre-entry functional (bump) test according to the instrument manufacturer’s guidance.
  • Replace instruments that can not be properly calibrated or when the annual factory calibration has expired.
7 SAE

Conduct pre-entry atmospheric testing:

  • Test for oxygen content, combustible concentrations, and concentrations of other potential atmospheric hazards, as anticipated, in that order.
  • Test at all levels and locations within a space where entrants may be exposed.
  • Ensure measurements are within acceptable entry reference levels prior to entry and for the duration of the entry.
  • Replace instrument if it malfunctions or gives erratic readings.
8 SAE

Ensure necessary procedures, practices, and equipment for safe entry and any non-entry rescue (e.g., retrieval apparatus (or system) are in place.

  • Implement positive ventilation at all times during an entry when a potential or actual hazardous atmosphere exists.
  • Ventilate the space until the atmosphere is within acceptable entry reference levels (AERLs) before entry and for the duration of entry.
9 SAE

Contact the following prior to entry and suspend entry if advised that rescue services are unavailable:

  • At SNL/NM: SNL EOC to confirm availability of rescue services by calling 844-4189
  • At SNL/CA: Central Alarm Station (CAS) extension 4-2300, and requests notification of the Alameda County Fire Department Dispatcher (located at Lawrence Livermore National Laboratories [LLNL]) to confirm the availability of rescue services.
10 SAE

Authorize entry (by entrants listed on the permit) only if all the following are true:

  • Entry conditions are acceptable and all specified control measures are implemented.
  • Entry is only made during the day and time specified on the Permit,
  • Attendant is on duty and controls the entry by remaining at the permit-required confined space.

Entry into Permit-Required Confined Spaces

Activity Responsible Individual Required Action
Prohibit Entry into a Permit-Confined Space Supervisor authorizing entry (SAE) Remove, or cause to be removed, unauthorized individuals who enter or attempt to enter a permit-required confined space during entry operations.
Supervise Entry into a Permit-Confined Space SAE

Verify that entry operations maintain acceptable entry conditions, including acceptable entry reference levels, during:

  • Entry and at all times entrants are in the space, and
  • Transfer of the SAE’s responsibilities to another trained Member of the Workforce.
Ensure Safety of Entrants Attendants
  • Maintain effective and continuous communication with the entrant(s).
  • Perform no other duties that may interfere with the ability to observe activities inside and outside of the space to ensure entrant(s) safety.
  • Warn unauthorized individuals to stay away from permit-required confined space, advise them to exit if they have entered, and inform SAE and entrants of any unauthorized individuals who have entered the permit-required confined space.

Emergency and Rescue

Step Responsible Individual

Required Action
1 SAE or Attendant
  • Evacuate space in the event of a prohibited condition (e.g., hazardous atmosphere) or the detection of entrant behavioral effects (e.g., loss of coordination) associated with a hazardous exposure.
  • Call SNL EOC, 844-0911 (at SNL/NM) or CAS, 4-2222 (at SNL/CA).
2 Entrants Exit space immediately (i.e., self-rescue) if capable. Communicate any egress impairment to Attendant. Wait for rescue instructions, if you are physically unable to evacuate without outside assistance.
3 SAE or Attendant or other authorized entrants outside of the space
  • Initiate a non-entry rescue (e.g., use of retrieval apparatus [or system]), if:
    • Non-entry retrieval equipment is in place;
    • Entrants are attached to retrieval lines;
    • Retrieval is possible without additional help and does not require entry by the attendant; and
    • Non-entry rescue is necessary and won’t injure or further injure entrant(s).
  • Wait for rescue and emergency services if unable to attempt or complete a non-entry rescue. Note: Do not enter space to perform rescue.

Terminate Entry and Cancel Permit

Step

Responsible Individual

Required Action
1 Supervisor authorizing entry (SAE)

Ensure that the entry is terminated and the permit is cancelled for any of the following:

  • At completion of job, or end of work shift, whichever occurs first.
  • If new hazards are encountered that are not covered in the permit.
  • Entry conditions can no longer be maintained safely.
2 SAE Review canceled permit for accuracy, completeness, and signatures.
3 SAE Conduct post-entry debriefing with entrants and attendants.
4 SAE

Submit the completed permit form after the termination of the entry activity, as follows:

  • At SNL/CA, to Industrial Hygiene Group, MS 9956.
  • At SNL/NM, to the Industrial Hygiene Programs, MS 1050.

C5 Alternate Procedures for Entry into PRCSs

Activity Responsible Individual Required Action
Manage C5 Alternate Procedure Entries Managers

Ensure that:

  • A C5 – Alternate Procedure is used for entry into a permit-required confined space when the only hazard is a potential or actual hazardous atmosphere, which can be controlled through positive ventilation alone.
  • The division ES&H team industrial hygienist is contacted to determine whether a C5 alternate procedure entry is appropriate and to establish the acceptable entry conditions.
  • Work control procedures are written to implement the C5 alternate procedure entry conditions established by the division ES&H team industrial hygienist.
  • The proper form is used for all C5 alternative procedure entries:
    • At SNL/NM use SF 2001-CSA, Confined Space Certification - C5 Alternate Procedures.
    • At SNL/CA, use SC 2001-CSA, Confined Space Certification - C5 Alternate Procedures.
  • Members of the Workforce participating in C5 alternate procedure entries are properly trained:
    • At SNL/NM, CNF104.
    • At SNL/CA, CNF105 and CNF107.
Supervise C5 Alternate Procedure Entries SAE

Ensure that:

At SNL/NM:

  • Use work control procedures specific to the C5 alternate procedure entry and the work to be conducted in the space.
  • Follow, complete, and sign the SF 2001-CSA,Confined Space Certification - C5 Alternate Procedures form.
  • Post the C5 Alternate Procedures form for all entrants to read.
  • After the termination of the entry activity, submit the completed C5 Alternate Procedures form to the Customer-Funded Records Center.

At SNL/CA:

  • Contact the division ES&H team industrial hygienist to determine if the conditions for the specific entry qualify for the C5 Alternate Procedure.
  • Use work control procedures specific to the C5 alternate procedure entry and the work to be conducted in the space.
  • Follow, complete, and sign the SC 2001-CSA, Confined Space Certification - C5 Alternate Procedures form.
  • Post the C5 alternate procedure form for all entrants to read.
  • After termination of the entry activity, submit the completed C5 Alternate Procedures form to the Industrial Hygiene Group, MS 9956.

C7 Reclassification for Entry into PRCSs

Activity Responsible Individual Required Action
Manage C7 Reclassification Entries Managers

Ensure that:

  • A C7 – Reclassification procedure is used for entry into a permit-required confined space as a non-permit confined space, when there is no potential or actual hazardous atmosphere and all remaining potential hazards may be eliminated without entry into the space.
  • The division ES&H team industrial hygienist is contacted to determine whether a C7 reclassification entry is appropriate and to establish the acceptable entry conditions.
  • Work control procedures are written to implement the C7 reclassification entry conditions established by the division ES&H team industrial hygienist. The proper form is used for all C7 reclassification entries:
    • At SNL/NM, use SF 2001-CSR,Confined Space Certification – C7 – Reclassification.
    • At SNL/CA, use SC 2001-CSR, Confined Space Certification – C7 – Reclassification.
  • Members of the Workforce participating in C7 reclassification entries are properly trained:
    • At SNL/NM, CNF050.
    • At SNL/CA, CNF105 and CNF107.
Supervise C7 Reclassification Entries SAE

Ensure that:

At SNL/NM:

  • Use work control procedures specific to the C7 reclassified space entry and the work to be conducted in the space.
  • Follow, complete, and sign the SF 2001-CSR,Confined Space Certification – C7 Reclassification form.

At SNL/CA:

  • Contact the division ES&H team industrial hygienist  to determine if the conditions for the specific entry qualify for the C7 Reclassification.
  • Use work control procedures specific to the C7 reclassified space entry and the work to be conducted in the space.
  • Follow, document, and sign the SC 2001-CSR, Confined Space Certification – C7 Reclassification form.

At SNL/NM and SNL/CA:
Post the C7 reclassification form for all entrants to read.

Entry into Non-Permit Confined Spaces

Activity Responsible Individual Required Action
Prepare for Entry into a Non-Permit Confined Space (NPCS) Managers

Ensure that Members of the Workforce who plan to enter a non-permit confined space do the following prior to entry:

  • Complete the required training for non-permit confined space entry, CNF050, unless current with CNF104 or CNF105.
  • Contact:
    • At SNL/NM, the confined space owner to identify significant modifications or alterations to the space that could impact the classification (e.g., permit or non-permit) and possibly introduce new hazards.
    • At SNL/CA, the division ES&H team industrial hygienist  to complete an evaluation of the planned entry and to obtain a Non-Permit Confined Space Checklist.
  • Evaluate:
    • Changes in the confined space since it was designated as an NPCS, or if it has been closed up for a long time (e.g., oxygen deficiency due to rusting of interior).
    • Work being performed in the area (e.g., use of combustion engines that generate carbon monoxide) that could change relevant entry procedures or the classification of the space (e.g., permit or non-permit), or otherwise adversely affect entry.
    • Work performed and materials used within the space to determine any adverse affect on entry that could result in permit-required conditions (e.g., hot work or use of hazardous chemicals).
  • Contact the division ES&H team industrial hygienist for a re-evaluation of the space prior to entry, if permit-required conditions may exist.
  • Determine the necessity for emergency and rescue procedures for remote areas including:
    • Retrieval apparatus (or system).
    • Effective means to summon responders.
    • Radio check-in procedure, with a check-in frequency interval.

Contractor Confined Space Entry Activities: Construction and Services

Activity Responsible Individual Required Action
Manage Confined Entries by Construction and Service Contractors Sandia delegated representative (SDR)

Ensure that:

  • Contracted work involving confined space entries meet the requirements of ESH100.1.GP.1, Manage Safety for Contracted Activities.
  • Contractors conduct confined space entries according to OSHA requirements 29 CFR 1910.146 and 1926.21 (b)(6)(i) and (ii), as applicable.
  • The confined space owner is contacted concerning the following prior to conducting confined space entries:
    • Permit-required confined space hazards.
    • Any significant modifications or alterations to the space that could impact the classification (i.e., permit-required or non-permit), procedures for entry, or potential hazards.
  • Hazards are identified and controlled within the permit-required space, and any necessary precautions or procedures to protect Members of the Workforce in or near the space are implemented.
  • Contractors provide a debriefing regarding any hazards confronted or created in permit-required spaces during entry operations to the SDR.
  • The division ES&H team industrial hygienist is provided debriefing information when unforeseeable hazards are confronted or created during a permit-required space entry.

Contractor Confined Space Entry Activities: Telecommunications

Activity Responsible Individual Required Action
Manage Confined Entries by Telecommunica-tions Contractors Sandia delegated representative (SDR)

Ensure that:

  • Contracted work involving entry into telecommunication field installations (e.g., manholes or unvented vaults) meets the requirements of ESH100.1.GP.1, Manage Safety for Contracted Activities.
  • Contractors conduct telecommunication related entries according to OSHA requirements 29 CFR 1910.268 (o), as applicable.
  • The space owner is contacted, prior to any entry, concerning any significant modifications or alterations to the space that could create a permit-required confined space.
  • Telecommunication field installations that become permit-required conduct entries according to OSHA requirements 29 CFR 1910.146 and 1926.21 (b)(6)(i) and (ii), as applicable, and include:
    • Hazards are identified and controlled within the space, and any necessary precautions or procedures to protect Members of the Workforce in or near the space are implemented.
    • Contractors provide a debriefing regarding any hazards confronted or created in the spaces during entry operations to the SDR.
    • The division ES&H team industrial hygienist is provided debriefing information when unforeseeable hazards are confronted or created during a permit-required space entry.

 

Implementing Tools

Guidance

  • Confined Space Program Provided Services.

Forms

  • SNL/NM:
    • SF 2001-CSE, Confined Space Entry Permit.
    • SF 2001-CSR, Confined Space Certification - C7 Reclassification.
    • SF 2001-CSA, Confined Space Certification - C5 Alternate Procedures.
    • SF 2001-CSS, Confined Space Permit Sign In/Sign Out Sheet.
  • SNL/CA:
    • SC 2001-CSE, Confined Space Entry Permit.
    • SC 2001-CSA, Confined Space Certification - C5 Alternate Procedures.
    • SC 2001-CSR, Confined Space Certification - C7 Reclassification.

Signs

  • SNL/NM:
    • SF 2001-NPS (7-2009), SNL/NM Non-Permit Confined Space Caution Sign (MS Word/PDF).
    • SF 2001-NPC (7-2009), SNL/NM Permit-Required Confined Space Warning Sign (MS Word/PDF).
  • SNL/CA:
    • SC 2001-NPA (7-2009) SNL/CA Non-Permit Confined Space Caution Sign Posting (MS Word/ PDF).
    • SC 2001-PCS (7-2009), SNL/CA Permit-Required Confined Space Warning Sign (MS Word/PDF).

Websites

  • SNL/NM Industrial Hygiene Programs Confined Space Entry website.

Required Records and Retention Schedule

Managers at SNL/NM must ensure that the records specified below are managed in accordance with the Sandia Records Retention and Disposition Schedule. The applicable Sandia record series number is in parentheses.

  • SF 2001-CSA, Confined Space Certification – C5 Alternate Procedures (HE-200-203-000).

 

Additional Drivers

  • 10 CFR 851, Worker Safety and Health Program.

Training Requirements

Responsible Individual Requireda Recommended
Managers Ensure that Members of the Workforce complete the required training identified below prior to performing the indicated work activity or fulfilling the indicated role. N/A

At SNL/NM:
Confined space owners or their designees CNF050 CNF104

Entrants of:

  • Non-permit confined spaces b, or
  • C7 – Reclassification b
 CNF050 N/A
Facilities construction inspectors CNF050 N/A

Supervisor authorizing entry (SAE) for:

  • Permit-required confined spaces, or
  • C5 – Alternate Procedures, or
  • C7 – Reclassification
 CNF104 N/A

Entrants of:

  • Permit-required confined spaces, or
  • C5 – Alternate Procedures
 CNF104 N/A
Attendants of permit-required confined spaces CNF104 N/A
a Retraining is required every 3 years or at a more frequent interval, as necessary, to maintain an acceptable level of competency and proficiency with established requirements, practices, and procedures. The need for more frequent retraining is determined by the responsible manager in consultation with industrial hygiene personnel.
b  Visitors may enter and tour non-permit confined spaces (NPCSs) or spaces that are under C7 – Reclassification if they have attended a briefing session conducted and documented by the confined space owner or the owner’s designee, covering the appropriate material in CNF050.

At SNL/CA:
Confined Space owners or their designees CNF050 CNF105
Facilities construction inspectors CNF050 N/A

Supervisor authorizing entry (SAE) for:

  • Permit-required confined spaces, or
  • C5 – Alternate Procedures, or
  • C7 – Reclassification
 CNF105
and
CNF107		 N/A

Entrants of:

  • Permit-required confined spaces, or
  • Non-permit confined spaces b, c, or
  • C5 - Alternate Procedures, or
  • C7 – Reclassification b, c
 CNF105
and
CNF107		 N/A
Attendants of permit-required confined spaces CNF105
and
CNF107		 N/A

Atmospheric monitoring

  • Permit-required confined spaces, or
  • Permit-required confined spaces entered under C5 - Alternate Procedures.
 CNF124
and
CNF105
and
CNF107		 N/A

a Retraining is required every 3 years or at a more frequent interval, as necessary, to maintain an acceptable level of competency and proficiency with established requirements, practices, and procedures. The need for more frequent retraining is determined by the responsible manager in consultation with industrial hygiene personnel.  


b Visitors may enter and tour non-permit confined spaces (NPCSs) or spaces that are under C7 - Reclassification, if they have attended a briefing session conducted and documented by the confined space owner, or the owner’s designee, covering the appropriate material in CNF050.


c SNL/CA does not differentiate the training requirements for permit-required versus non-permit confined space entrant or attendant personnel. An exception to this policy may be granted by the SNL/CA Confined Space Entry Program Administrator. Members of the Workforce who are granted this exemption shall complete CNF050.

Related Processes and Procedures

Process(es)

  • ESH100.2, Analyze and Control Hazards.

Procedure(s)

Change Summary

Date Summary
08/30/2011

Administrative

Modified

Updated the links to the SNL/NM and SNL/CA confined space certification forms.
06/28/2011

Administrative

Modified

  • Changed link for "industrial hygienist." (Requirements & Instructions, C5 Alternate Procedures for Entry into PRCSs)
  • Corrected dictionary links to "retrieval apparatus (or system)" and "supervisor authorizing entry (SAE)."  (Requirements & Instructions and Training)
  • Corrected link to "Confined Space Program Provided Services" guidance document. (Forms, Links & Tools)
  • Corrected link to "Industrial Hygiene Programs Confined Space Entry" website. (Forms, Links & Tools)

Removed

Link to "Confined Space Program Terms/Definitions."  (Forms, Links & Tools) (Note:  All terms and definitions are in the Corporate Dictionary.)
06/27/2011

Administrative

Modified

  • Changed link for "industrial hygienist" throughout the Requirements & Instructions sections.
12/08/2010

Administrative

Modified

  • Changed link for industrial hygienist throughout the document.
  • Updated SAPLE link to subject matter expert for system consistency.
  • Updated all dictionary terms to contain term identification numbers for system consistency.
11/29/2010

Administrative

Modified

Updated SAPLE links to subject matter experts for system consistency.
06/16/2010

Administrative

Added

Added a new heading "Signs" to Requirements and Instructions, Forms, Links & Tools for SNL/NM and SNL/CA.

Modified

Moved the sign data from the heading “Forms” to “Signs” in Requirements and Instructions, Forms, Links & Tools for SNL/NM and SNL/CA.
06/11/2010

Administrative

Modified

 Information—from 

ESH100.2.OTH.2 to ESH100.2.FP.2 in Related Corporate Processes & Procedures.
4/23/2010

Administrative

Added

Added sign links in Identifying and Classifying a Confined Space, Post Signs, and Forms, Links, and Tools.

At SNL/NM:

  • SF 2001-NPS (7-2009), SNL/NM Non-Permit Confined Space Caution Sign (MS Word/PDF).
  • SF 2001-NPC (7-2009), SNL/NM Permit-Required Confined Space Warning Sign (MS Word/PDF).

At SNL/CA:

  • SC 2001-NPA (7-2009) SNL/CA Non-Permit Confined Space Caution Sign Posting (MS Word/ PDF).
  • SC 2001-PCS (7-2009), SNL/CA Permit-Required Confined Space Warning Sign (MS Word/PDF).
1/11/2010

Administrative

Modified

  • Information—Step 1 from Confined space owners to Space owners in Identifying and Classifying a Confined Space.
  • Information—Step 2 from Confined space owners to Space owners in Identifying and Classifying a Confined Space.
  • Corrected 'work control documents' link in Identifying and Classifying a Confined Space.
02/01/2010

Administrative

Modified

Updated the hyperlink to form SF 2001-CSE.