Document: NRC Regulatory Guide
Document ID: 5cdd8024-5f0a-4a1b-8e14-1026125c5667
Document Type: regulatory_guide
Title: Assumptions Used for Evaluating the Potential Radiological Consequences of a Pressurized Water Reactor Radioactive Gas Storage Tank Failure (Rev. 0)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0833/ML083300020.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.24
CFR Part: 
CFR Title: 

Content:
U.S. NUCLEAR REGULATORY COMMISSION March 1972 Revision 0 REGULATORY GUIDE OFFICE OF NUCLEAR REGULATORY RESEARCH REGULATORY GUIDE 1.24 (Draft was issued as Safety Guide 24) ASSUMPTIONS USED FOR EVALUATING THE POTENTIAL RADIOLOGICAL CONSEQUENCES OF A PRESSURIZED WATER REACTOR RADIOACTIVE GAS STORAGE TANK FAILURE A. INTRODUCTION Section 50.34 of 10 CFR Part 50, “Contents of Applications: Technical Information,” requires that each applicant for a construction permit or operating license provide an analysis and evaluation of the design and performance of structures, systems, and components of the facility with the objective of assessing the risk to public health and safety resulting from operation of the facility. Radioactive gas storage tanks are used at pressurized water power reactors to permit decay of radioactive gases as a means of reducing or preventing the release of radioactive materials to the atmosphere. The accidental release of the contents of one of these tanks resulting from a rupture of the tank, or of an inlet or discharge pipe, or because of operator error or valve malfunction, is one of the postulated accidents used to evaluate the adequacy of these components with respect to the public health and safety. This safety guide lists acceptable assumptions for use in evaluating the radiological consequences of this postulated accident. In some cases unusual site characteristics, plant design features, or other factors may require different assumptions which will be considered on an individual case basis. B. DISCUSSION Radioactive gas storage tanks are used at pressurized water power reactors to permit decay of radioactive gases as a means of reducing or preventing the release of radioactive materials to the The NRC issues regulatory guides to describe and make available to the public methods that the NRC staff considers acceptable for use in implementing specific parts of the agency’s regulations, techniques that the staff uses in evaluating specific