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
CFR Part: 
CFR Title: 

Content:
s waste management system with the guidelines of 65 Regulatory Guide 1.143. ETSB SPLB also compares the seismic design criteria of DRAFT Rev. 3 - April 1996 11.3-12 equipment and of structures housing the GRS with the design guidance identified in Regulatory Guide 1.143. The exceptions are transmitted to EMEB, which has primary responsibility under SRP Sections 3.2.1 and 3.2.2 and to SEB, which has primary responsibility under SRP Sections 3.3.1, 3.3.2, 3.5.3, 3.7.1, 3.7.2, 3.7.3, 3.7.4, 3.8.4, and 3.8.5. ETSB SPLB also determines if the applicant's design includes adequate provisions to stop continuous leakage paths after an explosion. The areas of concern are (1) streams where water decomposition gases (hydrogen and oxygen) exist in a BWR, (2) cover gas streams where air inleakage can occur in a PWR, and (3) where there is a possibility of liquid hydrocarbons and ozone collecting in a cryogenic distillation system. 4. ETSB SPLB will compare the system design, system layout, equipment design, method of operation, and provisions to reduce leakage and to facilitate operations and maintenance of the GRS to the guidelines of Regulatory Guide 1.143. ETSB SPLB 66 will evaluate special design features provided to control leakage from system components and topical reports on system designs on a case-by-case basis. 5. ETSB SPLB will compare the design, testing and maintenance criteria for HEPA filters and charcoal adsorbers in filtration systems with the guidelines of Regulatory Guide 1.140. 6. If there is a potential that explosive hydrogen/oxygen mixtures exist, ETSB SPLB will determine, using the system description and P&IDs, whether the applicant has designed the gaseous waste management system GRS to withstand the effects of such an explosion, or has provided the required dual instrumentation and design features to annunciate and prevent the buildup of potentially explosive mixtures, respectively.67 7. At the OL or COL stage ETSB SPLB will review the technical