NRC Minimum Retention Periods

NRC Minimum Retention Periods Required Under 10 CFR Parts 20, 30, and 35
20.2102	Records of Radiation Protection Programs Provisions Audits and other reviews	Indefinitely 3 years
20.2103	Records of Surveys (Personnel and Public Radiation Exposure) Surveys and Calibrations Other Records	3 years Indefinitely
20.2104	Determination of Prior Occupational Dose NRC Form 4 Exposure Reports	Indefinitely 3 years
20.2105	Records of Planned Special Exposures	Indefinitely
20.2106	Records of Individual Monitoring Results	Indefinitely
20.2107	Records of Dose to Individual Members of the Public	Indefinitely
20.2108	Records of Waste Disposal Disposal by means other than Decay in Storage or Transfer	Indefinitely
30.51	Records of Receipt, Transfer, and Disposal Receipt (from date of transfer or disposal) Transfer Disposal	3 years 3 years Indefinitely
35.2024	Records of Authority and Responsibilities for Radiation Protection Programs License application, renewals, and amendments RSO Authority, Duties, and Responsibilities	5 years Indefinitely
35.2026	Records of Radiation Protection Program Changes	5 years
35.2040	Records of Written Directives	3 years
35.2041	Records for Procedures for Administrations Requiring a Written Directive	Indefinitely
35.2060	Records of Calibrations of Instruments Used to Measure the Activity of Unsealed Byproduct Material	3 years
35.2061	Records of Radiation Survey Instrument Calibrations	3 years
35.2063	Records of Dosages of Unsealed Byproduct Material for Medical Use	3 years
35.2310	Records of Safety Instruction	3 years
35.2404	Records of Surveys After Source Implant and Removal	3 years
35.2406	Records of Brachytherapy Source Accountability	3 years
35.2432	Records of Calibration Measurements of Brachytherapy Sources (after last use)	3 years
35.2433	Records of Decay of Strontium-90 Sources for Ophthalmic Treatments	Source Life
35.2605 to 35.2655	Records Required for Remote Afterloader, Teletherapy, and Gamma Stereotactic Radiosurgery Units	Variable
These are the NRC required retention periods as of 02/21/2012. Please be aware that other regulatory agencies may require longer retention periods (Agreement States).