Document: NRC Regulatory Guide
Document ID: 94d9f3d5-978d-4aea-9ba7-486ca7f8503a
Document Type: regulatory_guide
Title: Standard Format and Content of Decommissioning Cost Estimates for Nuclear Power Reactors
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0131/ML013100099.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.202
CFR Part: 
CFR Title: 

Content:
of the operating license. In this event, the requirement of 10 CFR 50.75(f)(2) to submit a preliminary cost estimate becomes applicable at the time the licensee dockets its certification of permanent shutdown, and the preliminary cost estimate should be submitted at the same time. If a prematurely shutdown licensee chooses to submit its PSDAR along with its certification of permanent shut down, it could choose to submit its preliminary cost estimate as the estimate of costs required for the PSDAR. This action would satisfy the requirements of 10 CFR 50.75(f)(2) and 10 CFR 50.82(a)(4)(i) with a single submittal. The preliminary cost estimate should include: ! A discussion of the decommissioning option anticipated to be implemented (DECON, SAFSTOR, or some combination thereof), with major factors that could 7 impact the cost of the decommissioning method, including major technical actions and waste disposal site availability. ! A discussion of the potential for known or suspected contamination at the site that may affect the cost of decommissioning. The discussion should include an evaluation of the records of information important to decommissioning required by 10 CFR 50.75(g). Although the requirements described in 10 CFR 50.75(g) for keeping records of spills or other unusual occurrences are outside the scope of this regulatory guide, the licensee should evaluate the anticipated extent of contamination on the facility and site, based on information available in the decommissioning files. This evaluation need not be detailed, but should include descriptions of known instances of releases of contaminated materials into the facility and the external environment, along with the possible impact on decommissioning. Known environmental contamination should be identified (e.g., that in soil, groundwater, or surface water). ! A preliminary schedule that shows the major decommissioning phases and the time period over which each of the phases extends. Typical major