Document: NRC Regulatory Guide
Document ID: 125a0eda-7c6e-4943-88ef-2e1be9b1a412
Document Type: regulatory_guide
Title: Termination of Operating Licenses for Nuclear Reactors
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003740243.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.86
CFR Part: 
CFR Title: 

Content:
letion in accordance with the dismantlement plan. If residual radiation levels do not exceed the values in Table I, the Commission may terminate the license. If these levels are exceeded, the licensee retains the possession-only license under which the dismantling activities have been conducted or, as an alternative, may make application to the State (if an Agreement State) for a byproduct materials license. 1.864 TABLE I ACCEPTABLE SURFACE CONTAMINATION LEVELS NUCLIDEa AVERAGEb c MAXIMUMb d j REMOVABLEb U-nat, U-235, U-238, and associated decay products Transuranics, Ra-226, Ra-228, Th-230, Th-228, Pa-231, Ac-227, 1-125,1-129 Th-nat, Th-232, Sr-90, Ra-223, Ra-224, U-232, 1-126,1-131,1-133 Beta-gamma emitters (nuclides with decay modes other than alpha emission or spontaneous fission) except Sr-90 and others noted above. 5,000 dpm a/100 cm2 100 dpm/100 cm2 1000 dpm[100 cm 2 5000 dpm fl-,/ 100 cm 2 15,000 dpm a/1 00 cm 2 300 dpm/ 100 cm2 3000 dpm/ 100 cm2 15,000 dpm 0-y/100 cm2 1,000 dpm a/100 cm2 20 dpm/ 100 cm2 200 dpm/100 cm2 1000 dpm 3-,y/100 cm2 aWhere surface contamination by both alpha- and beta-gamma-emitting nuclides exists, the limits established for alpha- and beta-gamma-emitting nuclides should apply independently. bAs used in this table, dpm (disintegrations per minute) means the rate of emission by radioactive material as determined by correcting the counts per minute observed by an appropriate detector for background, efficiency, and geometric factors associated with the instrumentation. cMeasurements of average contaminant should not be averaged over more than 1 square meter. For objects of less surface area, the average should be derived for each such object. dThe maximum contamination level applies to an area of not more than 100 cm2 . eThe amount of removable radioactive material per 100 cm2 of surface area should be determined by wiping that area with dry filter or soft absorbent paper, applying moderate pressure, and assessing the amount of