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:
tion to meet release for unrestricted use criteria for license termination. Available sources for this comparison include the following: a. Table 2 of Appendix B to 10 CFR Part 20, “Annual Limits on Intake (ALIs) and Derived Air Concentrations (DACs) of Radionuclides for Occupational Exposure; Effluent Concentrations; Concentrations for Release to Sewerage,” (ne half the table values equates to 25 millirem/year), b. the screening values in Appendix H to NUREG-1757, Volume 2, “Characterization, Survey, and Determination of Radiological Criteria,” Revision 1, issued September 2006 (Ref. 10), and c. remediation levels (derived concentration guidelines) in final status survey plans that have been approved by NRC for other facilities. Licensees, except those whose financial assurance for decommissioning is determined by a fixed formula, should adjust the decommissioning fund so that it will be sufficient to complete decommissioning at the time of license termination. If a licensee identifies residual radioactivity that would require remediation to terminate the license, it should increase the value of the fund to account for the added cost. Likewise, if a licensee elects to remediate during the operational phase of facility life, it may reduce the fund to account for remediation it has completed; the remaining fund must be sufficient to complete any remediation necessary to meet release criteria. The ultimate goal of the DPR is for licensees to have sufficient funds to effectively and efficiently conduct site remediation and terminate their licenses. This means having an adequate decommissioning trust fund. For the trust fund to be adequate, it must include sufficient funds to remove and dispose of all of the residual radioactivity that is above release for unrestricted use criteria at the time of license termination. That is, it must cover the costs of packaging, shipping, and disposal for the total amount of material to be removed from the site in addition to