Document: NUREG-0800
Document ID: e1c5261f-4ef6-4478-8cf0-015611057574
Document Type: srp
Title: and 9.3.2, “Process and Post-accident Sampling Systems.”  The review addresses
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1502/ML15029A039.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.5
CFR Part: 
CFR Title: 

Content:
drogen and oxygen mixtures exists, then designing the GRS to withstand the effects of such an explosion or providing the GRS with dual instrumentation and design features to annunciate and prevent the buildup of potentially explosive mixtures, satisfies the requirements of GDC 3. Using GDC 3 as guidance for SSCs important to safety provides assurance that the GRS is protected from the effects of an explosive mixture of hydrogen and oxygen, and that the safety functions of other SSCs will not be compromised in meeting effluent discharge concentrations of 10 CFR Part 20 associated with releases of contaminated fire protection water and combustion gases and smoke. Specific NRC guidance is provided in RG 1.189 and 1.205, IE Information Notices 83-14, 84-72, 88-08, and 90-50, and in NUREG/CR-4601. 5. Compliance with GDC 60 requires that each nuclear power plant design shall include means to control releases of radioactive materials in gaseous effluents to the environment during normal reactor operation, including AOOs. GDC 60 requires that the waste management systems provide for a holdup capacity sufficient to retain radioactive waste, particularly where unfavorable site environmental conditions may impose unusual operational limitations upon the release of effluents. The holdup capacityshould provide sufficient decay time for shorter-lived radionuclides before they are processed further or released to the environment. The holdup times are used in the source term calculations based on the methods described in RG 1.112 and NUREG-0016 (BWRs) or NUREG-0017 (PWRs) and ANSI/ANS 18.1-1999, as modified to reflect specific design features. The review should evaluate the types and characteristics of filtration systems and adsorbent media proposed to treat gaseous process and effluent streams, including type of charcoal media (grade, mesh size, and bulk density), number and volume of charcoal delay tanks, dynamic adsorption coefficients for charcoal media, and retention times,