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:
IN FLUID SYSTEMS OUTSIDE CONTAINMENT REVIEW RESPONSIBILITIES Primary - Plant Systems Branch (SPLB) Secondary - None I. AREAS OF REVIEW The plant design for protection against piping failures outside containment is reviewed to assureensure that such failures would not cause the loss of needed functions of safety-related 1 systems and to assureensure that the plant could be safely shut down in the event of such failures. The review includes high energy and moderate energy fluid system piping located outside of containment. If such a system penetrates containment (except for the auxiliary feedwater system) the review starts with the first isolation valve outside of containment. The review boundary for auxiliary feedwater systems extends either to the steam generator or to the feedwater (or steam) line, as appropriate. The SPLB reviews the plant design to assureensure conformance with the requirements of General Design Criteria Criterion 4 (GDC 4). The 2 3 specific areas of review are as follows: 1. SPLB reviews the general layout of high and moderate energy piping systems with respect to the plant arrangement criteria of Section B.1 of Branch Technical Position (BTP) SPLB 3-1, which is attached to this Standard Review Plan (SRP) section. Three 4 DRAFT Rev. 3 - April 1996 3.6.1-2 arrangement situations are covered by the criteria and all three may be encountered in a single plant. They are: a. Arrangements where protection of safety-related plant features is provided by separation of high and moderate energy systems from essential systems and components. b. Arrangements where protection of safety-related plant features is provided by enclosing either the high and moderate energy systems or the safety-related features in protective structures. c. Arrangements where neither separation nor protective enclosures are practical and special protective measures are taken to ensure the operability of safety-related features. Review Interfaces5 1. SPLB, coordinates with other