Document: NUREG-0800
Document ID: c0c5657a-82df-46c2-8cb5-fad0fd37fb58
Document Type: srp
Title: GASEOUS WASTE MANAGEMENT SYSTEMS1
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070610.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.3
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CFR Title: 

Content:
dy dose to any offsite individual for a postulated event.96 The criteria in Section B, below, provide adequate and acceptable design solutions for the concerns outlined above. This position paper sets forth minimum branch requirements and is not intended to prohibit the implementation of more rigorous design codes, standards, or quality assurance measures than those indicated nor reevaluate waste gas systems with limiting conditions for operation based on more conservative calculational assumptions. B. BRANCH TECHNICAL POSITION I. Waste Gas System Leak or Failure Analysis a) Criteria: The SAR (Section 15.7.1) should provide an analysis of the radiological consequences of a single failure of an active component in the waste gas system. The analysis should provide reasonable assurance that in the event of a unique unplanned release of radioactive gas from a postulated failure or leak of the waste gas system, the resulting total body exposure to an individual at the nearest exclusion area boundary will not exceed 25 mSv (25 rem) 0.5 rem. This is consistent with the dose criterion for the event guidelines of 10 CFR Part 20 and is a small fraction substantially below the guidelines of 10 CFR Part 100 limit. The bases 97 for the analysis should include the assumption that the waste gas system fails to meet its design intent as required by 10 CFR Part 50, § 50.34a(c), and Appendix A, GDC 60. DRAFT Rev. 3 - April 1996 11.3-18 b) Source Term: The safety analysis on the radiological consequences of a single failure of an active component in the waste gas system should use a system design basis source term for light-water-cooled nuclear power plants. The NRC staff method of calculation for this analysis is based on a conservative assumptions that the waste gas system maximum to maximize the design capacity source term (sustained power operation). is 7 times greater than the source term considered for normal operation, including anticipated operational occurrences, as given in