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Office of Homeland Security (OHS)
Radiation Safety Division (RSD)
United States Department of Agriculture


Acronym Definition
A1 DOT activity limit in special form per Type-A package
A2 DOT activity limit in normal form per Type-A package
ALI Annual limit on intake
ALARA As low as reasonably achievable
ANSI American National Standards Institute
AU Associate user
CFR Code of Federal Regulations
CPM Counts per minute
DOT Department of Transportation
DPM Disintegrations per minute
ECD Electron capture detector
EPA Environmental Protection Agency
FDA Food and Drug Administration
GM Geiger Mueller (detector or counter)
HP Health Physicist
HPS Health Physics Society
ICRP International Commission on Radiological Protection
KVp Kilo-volt (peak)
LRPO Location Radiation Protection Officer
LSC Liquid scintillation counter
MeV Million electron-volts
MDA Minimum detectable activity
NCRP National Council on Radiation Protection and Measurements
NRC Nuclear Regulatory Commission
NUREG Nuclear Regulatory Commission consolidated guidance about materials licenses
OHSEC Office of Homeland Security and Emergency Coordination
R Roentgen, rad, or rem
RAM Radioactive material
RSC Radiation Safety Committee (USDA)
RSD Radiation Safety Division (USDA)
RSMS Radiation Safety Management System (USDA Radiation Safety Division)
RSO Radiation Safety Officer
SI Systeme International
Ti Transport index
TLD Thermo-luminescent dosimetry
XFA Portable X-ray Fluorescence Analyzer