Document: NUREG-0800
Document ID: 71224475-ca63-4c09-acc1-c682d58112dd
Document Type: srp
Title: Revision 5 - March 2007
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550082.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7
CFR Part: 
CFR Title: 

Content:
that the analysis of NEDO-33160, “Regulatory Relaxation for the Post Accident SRV [Safety Relief Valve] Position Indication System,” applies to the plant and that the requirements of NUREG- 0737, Item II.D.3, and 10 CFR 50.34(f) continue to be met. Radioactivity concentration or radiation level in circulating primary coolant N/A A continuous post-accident monitor is not necessary. Containment and drywell hydrogen concentration Category In accordance with 10 CFR 50.44, Category 3 instrumentation is acceptable for diagnosing the course of beyond design basis accidents. Range For plants in which credit is taken for Class 1E hydrogen ignitors, the range recommendations may be relaxed if analysis shows that the instrumentation will remain on scale through all design basis events with adequate margin for uncertainties. Containment and drywell oxygen concentration (inerted containment) Category In accordance with 10 CFR 50.44, Category 2 instrumentation is acceptable for verification of the status of an inerted containment. Range The range recommendation may be relaxed if it can be shown that the instrumentation will perform adequately during all accident and post-accident conditions. Suppression chamber and drywell spray flows Direct measurement The use of RHR flow, suppression chamber temperature and pressure, and drywell temperature and pressure are acceptable alternatives if it can be shown that (1) use of these variables can accurately and reliably measure the effectiveness of the drywell and suppression chamber spray in a timely manner, and (2) the position of the spray throttling valves can be monitored and the sprays adequately controlled from the control room using the alternate variables. BTP 7-10-9 Revision 5 - March 2007 Table 1 (cont.). For BWRs: Acceptable Deviations and Clarifications to Revisions 2 and 3 of Regulatory Guide 1.97 Variable Deviation Acceptance Guidelines/Clarification Standby liquid control system (SLCS) flow Direct measurement