Document: NRC Regulatory Guide
Document ID: 05969442-49ea-4f4a-a9e2-de3a14628b5e
Document Type: regulatory_guide
Title: Minimization of Contamination and Radioactive Waste Generation:  Life-Cycle Planning - HISTORY 07/2013 – Periodic Review of Revision 0 – No issues identified
Source: NRC Regulatory Guide Division 4
Source URL: https://www.nrc.gov/docs/ML0805/ML080500187.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-4.21
CFR Part: 
CFR Title: 

Content:
ttention should be given to identifying the potential release mechanisms, release scenarios, and possible location of contaminant releases. 2.2 Provision for Early Detection of Leakage and Contaminant Migration Systems or structures that are buried or in contact with soil are particularly susceptible to undetected leakage. Undetected leakage commonly occurs in areas where it is not possible to conduct regular inspections; therefore, these leaks are often not identified in a timely manner. To minimize contamination of the environment, systems should be designed to facilitate early detection of leakage and contaminant migration. 2.3 Final Site Configuration Applicants covered by 10 CFR 20.1406 should consider the site configuration following construction to aid in preventing the offsite migration of radionuclides via an unmonitored pathway. 10 CFR 20.1406 applicants should identify, as early as practical in the licensing process, the potential pathways of radioactive contaminants through the surface and subsurface. Applicants covered by 10 CFR 20.1406(a) should develop an onsite monitoring program, as an integral part of the radiological environmental monitoring program. The program should provide early detection and quantification of leaks and spills and maintain a current baseline of radiological and hydrogeological parameters. Plans for responding to the detection of leaks and spills should reflect the final facility design and site configuration. 3. Facilitation of Decommissioning 3.1 General Statement In general, the means for facilitating decommissioning begins at the design stage and should be incorporated into the procedures and operations. The objective is to ensure that throughout the life of the facility, the design and operating procedures minimize the amount of residual radioactivity that will require remediation at the time of decommissioning. 3.2 Facilitation of Decommissioning with Proper Records The provisions of 10 CFR 50.75(g) contain requirements