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:
eactor Power Plants." 9. Regulatory Guide 1.140, "Design, Testing and Maintenance Criteria for Normal Ventilation Exhaust System Air Filtration and Adsorption Units of Light-Water-Cooled Nuclear Power Plants." DRAFT Rev. 3 - April 1996 11.3-16 BRANCH TECHNICAL POSITION ETSB 11-5 (Currently the responsibility of the SPLB)92 Postulated Radioactive Releases Due to a Waste Gas System Leak or Failure A. BACKGROUND During normal operation of a nuclear power plant, radioactive fission and activation gases and gases that are the result of radiolytic decomposition of water are generated in the reactor and are continuously removed from the reactor coolant. After separation, the gases may be treated for volume reduction of the nonradioactive species before the radioactive gases are stored for radioactive decay prior to release to the environment. The system to accomplish this separation, reduction, and decay process is called the waste gas system. The waste gas system at BWRs may include steam air ejectors, vacuum pumps, decay pipes, moisture separators, condensers, cryogenic distillation, tanks, ambient or chilled charcoal adsorbers, filters, process sampling, instrumentation and radiation monitoring, and control features. The waste gas system at PWRs may include volume control tank, letdown or shim bleed gas separation, gas stripping, cover gas collection, compressors, recombiners, surge and storage tanks, ambient or chilled charcoal adsorbers, moisture separators, condensers, filters, process sampling, instrumentation and radiation monitoring, and control features. In all cases, the waste gas system is a radioactive gaseous waste management system and information on the system is considered as part of the design information required by 10 CFR Part 50, § 50.34a. , with sSystem operation is required to be in accordance with § 50.36a. The design acceptance criteria for waste gas systems (i.e*., Gaseous Waste Management Systems has been given in SRP Section 11.3.93 The basic