Document: NUREG-0800
Document ID: 92d817ac-3ce3-4cf7-8d1a-627e8242fbf2
Document Type: srp
Title: PLANT DESIGN FOR PROTECTION AGAINST POSTULATED PIPING FAILURES
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070312.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.6.1
CFR Part: 
CFR Title: 

Content:
e. d. SPLB evaluates the applicant's analysis of the postulated failure of nonseismic Category I piping systems by performing a failure modes and effects analysis using SAR information and engineering sketches as necessary. 4. Systems defined in Appendix A to BTP SPLB 3-1 as "essential systems" are those that are needed to shut down the reactor and mitigate the consequences of the pipe break for a given postulated piping break. However, depending upon the type and location of the postulated pipe break, certain safety equipment may not be classified as "essential" for that particular event (e.g., emergency power system or high and low pressure core spray systems). On the other hand, some safety equipment will be "essential" for almost all cases (e.g., service water to ultimate heat sink). Table 3.6.1-1 is a list of those essential systems generally in the latter category. For standard design certification reviews under 10 CFR Part 52, the procedures above should be followed, as modified by the procedures in SRP Section 14.3 (proposed), to verify that the design set forth in the standard safety analysis report, including inspections, tests, analysis, and DRAFT Rev. 3 - April 1996 3.6.1-8 acceptance criteria (ITAAC), site interface requirements and combined license action items, meet the acceptance criteria given in subsection II. SRP Section 14.3 (proposed) contains procedures for the review of certified design material (CDM) for the standard design, including the site parameters, interface criteria, and ITAAC.19 TABLE 3.6.1-1 SYSTEMS USUALLY REQUIRED FOR SAFE SHUTDOWN PWR BWR Service Water System Service Water System Auxiliary Feedwater System Reactor Coolant Injection System Volume Control System Automatic Depressurization System Decay Heat Removal System Residual Heat Removal System Component Cooling Water System Component Cooling Water System (if provided) Table 3.6.1-2 is a listing of systems typically classified as either high or moderate energy systems that are