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Radiation Safety Training Module
Refresher Training
ISU Technical Safety Office
Campus Box 8106
Pocatello, ID 83209
(208) 282-2311
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Physical Security of Radioactive Materials

According to the provisions of 10CFR20 the licensee shall: (i) secure from unauthorized removal or access licensed materials that are stored in controlled or unrestricted areas (10CFR20.1801) AND (ii) control and maintain constant surveillance of licensed material that is in a controlled or unrestricted area and that is not in storage (10CFR20.1802). These security requirements apply to radionuclides in any form, sealed or non-sealed, and to radionuclides in original containers, anywhere in the experimental process, and in waste containers. Only those persons who are qualified to work with radioactive materials have access to those materials. Administration at Idaho State University is extremely sensitive regarding this policy and strongly encourages its employees to strictly adhere to the policy because of problems discovered during recent NRC inspections.

ISU Security Requirements
All Responsible Users at Idaho State University are required to maintain security of the licensed radioactive material in their possession.  This includes but is not limited to: radionuclides in original containers, reagents and test materials, and waste in waste containers.

1.  The presence of authorized personnel in the laboratory will be sufficient to meet the NRC security requirement (at least one authorized individual must continuously be present in the laboratory when radioactive materials are not secured).

2.  When there are no authorized personnel in the laboratory, the following conditions apply:
     a)     One or more physical barriers will be maintained for licensed material above the exemption level of 
             Schedule B of 10 CFR 20.
     b)     Two or more barriers will be maintained for all radioactive material in excess of 100 times the levels of
             Appendix C of 10 CFR 20.
     c)     No exceptions to the two barrier rule for material in excess of 1000 times the levels of Appendix C of 
             10 CFR 20 will be granted by the Radiation Safety Officer or the Radiation Safety Committee.  
             Responsible users who desire an exception to this policy may appeal to the VPR.

Common safe storage measures are recommended for all radioactive material below the levels specified above.  A physical barrier is defined as some form of fixed locked storage.  The door to the laboratory is considered to be one barrier if it is maintained in a locked condition when the lab is unoccupied.  Other barriers may be: a fixed locked cabinet, locked refrigerator, locked fume hood sash or similar fixed locked storage.

Responsible Users
The responsible user must ensure that:

  • the licensed radioactive materials that are stored in controlled or unrestricted areas are secured from unauthorized removal or access.
  • the licensed radioactive material that is stored in a controlled or unrestricted area and that is not in storage is constantly controlled and surveyed.
  • all radiation users have received the required radiation safety and security instruction.
  • radioactive materials are secured against theft, misuse and access by unauthorized personnel.
  • all radioactive materials will be logged in and out.
  • radioactive wastes are segregated properly and placed in appropriate containers (DO NOT generate mixed hazardous waste).  The containers are to be provided by the user; labels and clear plastic bags are available from the TSO. The TSO is contacted for the disposal of radioactive wastes.
  • accurate records of acquisitions and dispositions of radioactive materials are maintained. 
  • the RSO is notified promptly of any accident or abnormal incident involving radioactive materials.
  • prior to any extended absence of the responsible user, another individual is authorized by the Radiation Safety Committee (or temporarily authorized by the Radiation Safety Officer) to assume the preceding responsibilities, or the use of radioactive materials is suspended or terminated.
To order and receive radioactive materials from stores, the laboratory supervisor should fill a purchase order which must be signed by the RSO.
Radioactive materials may be shipped from the University to another organization or individual ONLY after verification by the RSO that all transfer, packaging, labeling and transportation requirements have been met.

All transportation of radioactive materials ON campus must be conducted by the TSO.

  Key Words: security,  radioactive materials
Page: 11 of: 12
  Quiz: Who is responsible for the inventory and security of radioactive materials in a laboratory?
a) TSO b) Responsible User c) Department Chairperson d) Stockroom Personnel
  10 CFR 20.1801 Security of Stored Material
10 CFR 20.1802 Control of Material Not in Storage
Health Physics Society Ask the Experts - Transportation

This web based training was developed for use within Idaho State University.  It is intended for use by, and applies to ISU employees, staff, visitors, and students.  If this web site or any part of it is used elsewhere, neither its authors nor the University accept responsibility for its contents.  This information may NOT be used for commercial development or profit.