Document: NUREG-0800
Document ID: cf61f16a-4e82-42da-8333-e100f557fd60
Document Type: srp
Title: PLANT DESIGN FOR PROTECTION AGAINST POSTULATED PIPING FAILURES IN
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550032.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.6.1
CFR Part: 
CFR Title: 

Content:
for the review of SRP Section 3.6.2 for a determination of the proper locations. C. For cases where neither physical separation nor protective enclosures are considered practical by the applicant, the reviewer will analyze the SAR information to verify the following: i. The reasons for which the applicant judged both physical separation and system enclosure to be impractical as means of protection are consistent with item B.1.c. of BTP 3-3. ii. Redundant design features or additional protections (assuming a single active failure in any required system) have been provided such that failure modes and effects analyses for all failure situations ensure the performance of safety features. These analyses are done under the criteria and assumptions of item B.3. of BTP 3-3. Special measures taken to provide additional protection are reviewed on a case by case basis, with assistance from other staff as needed. 2. Review the information presented in the SAR that identifies the principal design features. The reviewer performs the evaluation by comparing the design basis information given in the SAR with that described in item B.2. of BTP 3-3. By this comparison of individual design features, the reviewer verifies that the following necessary measures have been provided by the applicant's design. A. Design features provided for protective structures or compartments and other protective measures are reviewed as described in item B.2.b. of BTP 3-3. The reviewer compares the design features and bases given in the SAR with the stated item in BTP 3-3. The comparative review may include the use of plant arrangement and layout drawings as necessary to clarify the design intentions 3.6.1-8 Revision 3 - March 2007 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