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:
Leak detection systems should be included within the facility design that are capable, to the extent practical, of detecting minor leaks that otherwise, over time, could potentially cause significant environmental contamination. 1.5 Measures for Reducing the Need To Decontaminate Equipment and Structures Leakage from components containing radioactive liquids can be reduced by: (1) the inclusion of design specifications such as the proper selection of materials (e.g., corrosion-resistant piping, double- walled pipes, and tanks with annulus monitoring); (2) improved protection of buried components (e.g., galvanic corrosion protection, coatings); (3) the use of industry consensus codes and standards for repair and/or replacement of SSCs; and (4) the application of rigorous quality control and quality assurance program requirements in procurement specifications and during installation of SSCs. 10 CFR 20.1406 applicants can decrease the probability of a release, the amount released, and the spread of a contaminant by: (1) temporary or supplemental ventilation systems, (2) treating the exhaust from vents and overflows, and (3) using techniques to control releases (i.e., capping or elevating uncontrolled drains, hard piping of drains to drain sumps, use of barriers or dikes, use of controlled sumps, and protection of SSCs from inclement weather). 1.6 Periodic Review of Operational Practices Operational practices are another important consideration in meeting the requirements of 10 CFR 20.1406. These practices should be subjected to periodic review to ensure that (1) facility personnel follow the operating procedures, (2) operating procedures are revised to reflect the installation of new or modified equipment or facility processes, and (3) personnel qualification and training are kept current with the latest versions of operational programs and procedures. Operational programs and procedures should be subjected to review and evaluation following events that resulted in