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:
d by the applicant in his applicant's design. 17 a. SPLB, with assistance from ESGBECGB and EMEB, reviews the design 18 features provided for protective structures or compartments, fluid system piping restraints, and other protective measures as described in item B.2.b of BTP SPLB 3-1. The reviewer compares the design features and bases given in the SAR with the stated item in BTP SPLB 3-1. The comparative review may include the use of plant arrangement and layout drawings as necessary to clarify the design intentions and implementation. In the majority of case reviews, SAR statements and drawings indicating that the design meets the intent of the acceptance criteria are accepted. However, there may be cases where engineering judgment and independent staff analyses are needed to verify the capability of structures and components to withstand the dynamic pressure and mechanical effects of a pipe rupture. b. SPLB reviews the SAR information, as supplemented by engineering sketches or drawings where necessary, to determine that fluid system piping between containment isolation valves conforms to item B.2.c of BTP SPLB 3-1. This includes piping penetrations between single and dual barrier containments that may have enclosing protective structures. The review is mainly performed on a comparative basis by SPLB. EMEB reviews these piping details to verify the design limits, break locations, and dynamic effects, in accordance with BTP EMEB 3-1. 3. SPLB reviews the results of the applicant's evaluation of the consequences of postulated piping failures of high and moderate energy fluid piping systems. The type and location of each postulated piping failure (i.e., longitudinal or circumferential) in either a high or moderate energy system will be reviewed by EMEB on the basis of BTP EMEB 3-1. The review by SPLB will be based upon the information provided by applicants in the SAR concerning the effects of postulated failures on essential equipment and the ability of the plant