Document: NRC Regulatory Guide
Document ID: 151ab883-1221-4a79-88d6-a2631cce2239
Document Type: regulatory_guide
Title: Decommissioning of Nuclear Power Reactors (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2134/ML21347A080.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.184
CFR Part: 
CFR Title: 

Content:
ecommissioning trust. The licensee must ensure the availability of funds to ultimately release the site and terminate the license. The licensee is prohibited from using the remaining 77 percent of the decommissioning funds until it submits a site-specific decommissioning cost estimate to the NRC. The licensee must submit this estimate prior to or within 2 years following permanent cessation of operations with the PSDAR. DG-1347 Revision 1, Page 25 Site-specific decommissioning cost estimates should include an outline of the expected costs for activities specified in the PSDAR. See Regulatory Guide 1.185, “Standard Format and Content for Post-Shutdown Decommissioning Activities Report,” for further information on the expected level of detail. See RG 1.159, “Assuring the Availability of Funds for Decommissioning Nuclear Reactors,” for guidance on estimating the amount of funds for decommissioning and methods acceptable for demonstrating financial assurance. Licensees may provide site-specific decommissioning cost estimates sooner than 2 years after permanent cessation of operations. For licensees that submitted a preliminary site-specific decommissioning cost estimate about 5 years before the projected end of operations, the licensee could expand and update the preliminary estimate and submit it as the site-specific decommissioning cost estimate. The licensee could also submit the site-specific decommissioning cost estimate with the PSDAR. If the licensee submits the site-specific decommissioning cost estimate with the PSDAR, it should appropriately identify it as a site-specific decommissioning cost estimate. This approach would eliminate the 23-percent hold point for spending the decommissioning funds so long as the licensee has submitted the certifications required by 10 CFR 50.82(a)(1) or 10 CFR 52.110(a). Licensees that plan to begin major decommissioning activities shortly after permanent cessation of operations should consider an early submission of the