Document: NUREG-0800
Document ID: 23331bab-fa00-40fd-8357-d8db908b4532
Document Type: srp
Title: GASEOUS WASTE MANAGEMENT SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070710366.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.3
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CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Organization responsible for the review of effectiveness of radwaste systems. Secondary - Organizations responsible for the review of (1) radwaste system design and performance, (2) ventilation systems, and (3) hydrogen control. I. AREAS OF REVIEW The gaseous waste management system (GWMS) involves the gaseous radwaste system (GRS), which deals with the management of radioactive gases collected in the offgas system (this system contains charcoal delay beds) or the waste gas storage and decay tanks. In addition, it involves the management of a condenser air removal system, steam generator blowdown flash tank (if applicable), and containment purge exhausts for PWRs; hydrogen and oxygen recombiners and instrumentation to control hydrogen and oxygen levels; gland seal exhaust and mechanical vacuum pump operation exhaust for BWRs; and building ventilation system exhausts for both PWRs and BWRs. The management for gaseous effluents to the environment from the above sources may, in turn, involve the use of mobile equipment connected to permanently installed systems to reduce releases of radioactive materials in effluents from the above sources. The review of the GWMS includes the design, design objectives, design criteria, methods of treatment, expected releases, and methods and principal parameters used in calculating effluent source terms and releases of radioactive materials (noble gases, radioiodines, tritium, carbon-14, and particulates). SRP Section 12.3-12.4 considers the presence of N-16, as a noble gas, in assessing doses from external radiation from the turbine buildings of BWR plants. The review will include system piping and instrumentation diagrams (P&IDs) and process flow diagrams showing methods of operation and factors that influence waste treatment (e.g., system interfaces and potential bypass routes to nonradioactive systems). 11.3-2 Revision 3 - March 2007 The specific areas of review are as follows: 1. Equipment and