Document: NRC Regulatory Guide
Document ID: 9c2e51dc-3cee-46a8-8d56-738b8eca7e2e
Document Type: regulatory_guide
Title: Standard Format and Content for Post-Shutdown Decommissioning Activities Report (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2134/ML21347A138.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.185
CFR Part: 
CFR Title: 

Content:
r example, a chemical decontamination of a slightly radiologically contaminated system using a mild acid would need only a short description of the process in the PSDAR. However, to allow the staff to determine the proper level of oversight, the NRC expects that the use of a unique chemical decontamination method on a system containing large amounts of contamination (e.g., the primary coolant system) would result in a more detailed description of the process. Likewise, the licensee should discuss in greater detail an activity that could result in a significant environmental impact that may be outside the bounds of those impacts considered in appropriate federally issued environmental review documents, including the Decommissioning GEIS, such as the removal, processing, and storage of fuel debris contained in a system or in the spent fuel pool. For those activities that will occur in the future such that licensees may not be able to make the definitive conclusion that impacts will be bounded at the PSDAR stage, identify those activities that have unbounded environmental impacts that will be addressed closer to, but still prior to, the decommissioning activity being undertaken. In addition to the above general considerations, for prompt decontamination and dismantlement undertaken under the DECON strategy, the licensee should describe activities such as the following: a. removal of the reactor vessel and internals b. removal of other large facility components, including major radioactive components c. removal of the balance of the primary system (e.g., the charging and boron control systems) d. general dismantlement activities related to the removal of other significant radioactive components and any associated structures e. methods for decontaminating radioactive components, including the use of chemical decontamination techniques f. decontamination of structures or buildings, such as the auxiliary and fuel handling buildings g. conduct of activities related to