Document: NUREG-0800
Document ID: 8536691d-4254-4c01-a5ec-aa9dee960958
Document Type: srp
Title: PROCESS AND EFFLUENT RADIOLOGICAL MONITORING INSTRUMENTATION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1007/ML100740509.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.5
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CFR Title: 

Content:
nts of GDCs 63 and 64 provides reasonable assurance that the levels of radioactivity in effluents from nuclear power plants will not exceed specified limits and design objectives. The review conducted in this SRP section, with supporting information drawn from SRP Sections 11.2, 11.3, and 11.4, evaluates the method used to demonstrate compliance with these requirements. 7. The requirements specified in 10 CFR 50.34(f)(2)(xvii) and 10 CFR 50.34(f)(2)(xxvii) include provisions for monitoring gaseous effluents from all potential accident release points. In examining the applicant’s system for sampling process streams and effluents under accident conditions, the reviewer considers RGs 1.97 and 1.101; NUREG-0737, items II.B.2 and II.B.3 (Clarification Items 1, 3, 6, and 11), item II.F.1, Attachment 1, and the August 16, 1982, letter from D.G. Eisenhut; SRP Section 9.3.2; and the applicant’s emergency plan and implementation procedures. SRP BTP 7-10 (see SRP Section 7.5) provides additional guidance on the application of RG 1.97. Provisions for the following should be included: A. Purging sample lines B. Minimizing sample loss or distortion in sample chemical and physical composition C. Preventing blockage of sample lines D. Appropriate disposal of samples E. Flow restrictions or remotely operated isolation valves to limit reactor coolant loss from rupture of sample lines The following conditions also apply: F. Samples be representative of reactor primary coolant, reactor steam, secondary coolant, and secondary steam in the core area or system sample streams. 11.5-16 Revision 5 - May 2010 G. Sample lines should be as short as possible to minimize the volume of fluid taken from containment process or effluent streams. H. If inline monitoring is used, the licensee must provide backup provisions for grab sampling. If the provisions do not address post-accident sampling, refer instead to the “Notice of Availability for Referencing in License Amendment Applications Model