Document: NUREG-0800
Document ID: c372af3e-1f44-4817-b7ae-01b1c087f547
Document Type: srp
Title: STEAM GENERATOR BLOWDOWN SYSTEM (PWR)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350093.pdf
Revision Date: 2023-06
Chapter: 10
Section ID: 10.4.8
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Chemical Engineering Branch (CMEB) Secondary - None I. AREAS OF REVIEW At the construction permit (CP) stage, CMEB reviews the steam generator blowdown system (SGBS), as described in the applicant's safety analysis report (SAR), in the specific areas that follow. At the operating license (OL) stage, the CMEB review consists of confirming the design accepted at the CP stage. 1. CMEB reviews the SGBS design basis in terms of its ability to remove particu- late and dissolved impurities from the steam generator secondary side, thus assisting in maintaining optimum secondary-side water chemistry in steam genera- tors during normal operation, including anticipated operational occurrences (main condenser inleakage and primary-to-secondary leakage). The design basis should include consideration of expected and design flows for all modes of operation (process and process bypass), process design parameters and equip- ment design capacities, expected and design temperatures for temperature sensi- tive treatment processes (demineralization and reverse osmosis) and process instrumentation and controls for maintaining operations within established parameter ranges. 2. Process sampling capabilities of the SGBS is reviewed by CMEB as part of its primary review responsibility for SRP Section 9.3.2. CMEB will coordinate evaluations of other branches that interface with the overall review of the Steam Generator Blowdown System as follows: Mechanical Engineering Branch (MEB) reviews the system's seismic design and quality group classification as part of its primary review responsibility for SRP Sections 3.2.1 and 3.2.2, respectively; Structural Engineering Branch (SEB) determines the acceptability of the design analysis, procedures, and criteria used to establish the ability of seismic Category I structures housing the system and Rev. 2 - July 1981 USNRC STANDARD REVIEW PLAN Standard review plans are prepared for the guidance of the Office of Nuclear