Document: NRC Regulatory Guide
Document ID: d812c779-c17b-4eb3-9d66-b532cd68bd03
Document Type: regulatory_guide
Title: Decommissioning Planning During Operations + HISTORY - HISTORY 12/2011 – DG-4014 , Proposed New Guide
Source: NRC Regulatory Guide Division 4
Source URL: https://www.nrc.gov/docs/ML1115/ML111590642.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-4.22
CFR Part: 
CFR Title: 

Content:
design changes to the physical facility. Considerations for revisions to procedures are in Figure 3. DG-4014, Page 8 Figure 2 Does the DPR really require me to do something? DG-4014, Page 9 Figure 3a illustrates specific areas for consideration as part of a licensee’s review of monitoring and surveillance plans. They include (1) unmonitored areas inside buildings or outside where spills or leaks could occur, and (2) unmonitored areas onsite where effluents might concentrate. For materials licensees this may include such things as dispersible powders or aerosols. Note that some of these areas, where significant residual radioactivity may be present, may not be readily accessible for conducting direct surveys because of the physical layout of systems and structures. If the licensee identifies areas that cannot be reasonably surveyed directly, it should establish surrogate monitoring (e.g., sentinel monitoring locations) on a schedule commensurate with the likelihood of significant residual radioactivity occurring there. For many licensees, survey and monitoring requirements may be established by either license conditions or in documents specifically referenced in the license. Therefore, changes to these plans may require approval by the NRC. If so, licensees should obtain NRC approval, to the extent necessary, with revisions to these plans. Figure 3b shows the actions that licensees should normally follow in implementing survey and monitoring plans. Once the cause of the contamination is identified, licensees should take corrective action to minimize further contamination. If significant residual radioactivity is not expected to remain at the time of license termination, no additional actions are required by the DPR. If significant residual radioactivity is expected at the time of license termination, licensees should estimate the financial impact and consider timely remediation. Licensees should judiciously monitor the area until concentrations are decreasing to