Quantifying Electrostatic Resuspension of Radioparticulates from Surface Contamination
Abstract not provided.
Publications
Security Thresholds for Radiation Source Protection
Abstract not provided.
Reassessment of Empirical Resuspension Factors Following Radionuclide Release
Abstract not provided.
Reassessment of Empirical Resuspension Factors Following Radionuclide Release
Abstract not provided.
Prompt Effects from Nuclear Detonation
Abstract not provided.
Occupational Internal Dosimetry A Comprehensive Review
Abstract not provided.
Technical Basis Document for Internal Dosimetry at Sandia National Laboratories Revision 2
The RPID Project will be implemented at all SNL facilities for activities involving the processing and/or storing of radioactive materials. This project includes activities at the Tech Area (TA) I, TA II, TA III, TA IV, TA V, Coyote Test Field, and environmental restoration sites at SNL, located in Albuquerque, New Mexico, and the Kauai Test Facility(SNL/KTF). Reference to SNL throughout this document includes facilities and activities at the Albuquerque location and at SNL/KTF.
Technical Basis Document for Internal Dosimetry at Sandia National Laboratories Revision 3
The RPID Project is implemented at all SNL facilities for activities involving the processing and/or storing of radioactive materials. Reference to SNL throughout this document includes all SNL facilities and activities.
ABHP Certification -- Radiation Disciplines
Abstract not provided.
A Review of the US National Academies Report on Radiation Source Use and Replacement
Abstract not provided.
Radiobiological studies using gamma and x rays
There are approximately 500 self-shielded research irradiators used in various facilities throughout the U.S. These facilities use radioactive sources containing either 137Cs or 60Co for a variety of biological investigations. A report from the National Academy of Sciences[1] described the issues with security of particular radiation sources and the desire for their replacement. The participants in this effort prepared two peer-reviewed publications to document the results of radiobiological studies performed using photons from 320-kV x rays and 137Cs on cell cultures and mice. The effectiveness of X rays was shown to vary with cell type.
A Comparison of In Vivo Cellular Responses to Cs-137 Gamma Rays and 320-kV X Rays
Proposed for publication in Dose-Response.
Abstract not provided.
Radiobiological Studies Using Gamma and X Rays
Abstract not provided.
Kinetics Equation Replacement Function for a Particular Continuous Intake Scenario
Proposed for publication in Health Physics.
Abstract not provided.
Dose and Dose Rate Analysis from Intake of Radionuclides and Their Relationship to Deterministic Effects
Abstract not provided.
Biological Stochasticitiy A Negledted Component of Radiation Microdosimetry
Radiation Protection Dosimetry
Abstract not provided.
Revision of ANSI HPS N13.14 Bioassay Programs for Tritium
Abstract not provided.
Dose algorithm for EXTRAD 4100S extremity dosimeter for use at Sandia National Laboratories
An updated algorithm for the EXTRAD 4100S extremity dosimeter has been derived. This algorithm optimizes the binning of dosimeter element ratios and uses a quadratic function to determine the response factors for low response ratios. This results in lower systematic bias across all test categories and eliminates the need for the 'red strap' algorithm that was used for high energy beta/gamma emitting radionuclides. The Radiation Protection Dosimetry Program (RPDP) at Sandia National Laboratories uses the Thermo Fisher EXTRAD 4100S extremity dosimeter, shown in Fig 1.1 to determine shallow dose to the extremities of potentially exposed individuals. This dosimeter consists of two LiF TLD elements or 'chipstrates', one of TLD-700 ({sup 7}Li) and one of TLD-100 (natural Li) separated by a tin filter. Following readout and background subtraction, the ratio of the responses of the two elements is determined defining the penetrability of the incident radiation. While this penetrability approximates the incident energy of the radiation, X-rays and beta particles exist in energy distributions that make determination of dose conversion factors less straightforward in their determination.
Radiation basics and radiation effects
Abstract not provided.
Operational internal dosimetry basics and regulatory implications
Abstract not provided.
Determination of possible damage/degradation of the Sandia National Laboratories Personal Nuclear Accident Dosimeter (PNAD)
This report describes the results of an inspection performed on the existing stock of SNL Personal Nuclear Accident Dosimeters (PNADs). The current stock is approximately 20 years old, and has not been examined since their initial acceptance. A small random sample of PNADs were opened (a destructive process) and the contents visually examined. Sample contents were not degraded and indicate that the existing stock of SNL PNADs is acceptable for continued use.
ICRP Publication 100 Human Alimentary Tract Model for Radiological Protection
Health Physics
Abstract not provided.
Response to Lloyd
Proposed for publication in Health Physics.
Abstract not provided.
Comments about Potter's review of internal dosimetry, Lloyd, et. al
Proposed for publication in Health Physics.
Abstract not provided.
Internal dosimetry - a review
Proposed for publication in Health Physics.
The field history and current status of internal dosimetry is reviewed in this article. Elements of the field that are reviewed include standards and models, derivation of dose coefficients and intake retention fractions, bioassay measurements, and intake and dose calculations. In addition, guidance is developed and provided as to the necessity of internal dosimetry for a particular facility or operation and methodology for implementing a program. A discussion of the purposes of internal dosimetry is included as well as recommendations for future development and direction.
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