Document: NUREG-0800
Document ID: 2779d8da-7e49-4277-9495-bf9ec444636f
Document Type: srp
Title: STEAM GENERATOR BLOWDOWN SYSTEM (PWR)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070602.pdf
Revision Date: 2023-06
Chapter: 10
Section ID: 10.4.8
CFR Part: 
CFR Title: 

Content:
ion of steam generator tubes and materials thereby reducing the likelihood and magnitude of primary-to-secondary coolant leakage. The SGBS is seismic Category I and Quality Group B from its connection to the steam generator inside primary containment up to and including the first isolation valve outside containment in accordance with Regulatory Guides 1.26 and 1.29 because this portion of the SGBS is considered an extension of primary containment. The SGBS downstream of the outer containment isolation valves is not seismic Category I and meets the quality standards of Position C.1.1 of Regulatory Guide 1.143 since it is not safety related. Thus, the SGBS meets the quality standards requirements of General Design Criterion 1 and seismic requirements of General Design Criterion 2. 10.4.8-7 DRAFT Rev. 3 - April 1996 Based on the foregoing evaluation, we conclude that the proposed steam generator blowdown system is acceptable. For design certification reviews, the findings will also summarize, to the extent that the review is not discussed in other safety evaluation report sections, the staff’s evaluation of inspections, tests, analyses, and acceptance criteria (ITAAC), including design acceptance criteria (DAC), site interface requirements, and combined license action items that are relevant to this SRP section.52 V. IMPLEMENTATION The following is intended to provide guidance to applicants and licensees regarding the NRC staff's plan for using this SRP section. This SRP section will be used by the staff when performing safety evaluations of license applications submitted by applicants pursuant to 10 CFR 50 or 10 CFR 52. Except in those 53 cases in which the applicant proposes an acceptable alternative method for complying with specified portions of the Commission's regulations, the method described herein will be used by the staff in its evaluation of conformance with Commission regulations. The provisions of this SRP section apply to reviews of applications