Document: NUREG-0800
Document ID: 0e8ea974-9b26-4bf5-9ca9-ca9814ad85b6
Document Type: srp
Title: STEAM GENERATOR BLOWDOWN SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550004.pdf
Revision Date: 2023-06
Chapter: 10
Section ID: 10.4.8
CFR Part: 
CFR Title: 

Content:
ons, SRP Section 14.3 should be followed for the review of ITAAC. The review of ITAAC cannot be completed until after the completion of this section. IV. EVALUATION FINDINGS The reviewer verifies that the applicant has provided sufficient information and that the review and calculations (if applicable) support conclusions of the following type to be included in the staff's safety evaluation report. The reviewer also states the bases for those conclusions. 1. The SGBS controls the concentration of chemical impurities and radioactive materials in the secondary coolant. The scope of the SGBS review included piping and instrumentation diagrams, seismic and quality group classifications, design process parameters, and instrumentation and process controls. The review included the applicant’s evaluation of the proposed system operation and the applicant’s estimate of the controlling process parameters. 2. The SGBS design meets the primary boundary material integrity requirements of GDC 13 as it relates to monitoring variables during normal operation and anticipated operational occurrences, and maintaining these variables within prescribed operating ranges that limit corrosion of steam generator tubes and materials. 3. The SGBS design meets the primary boundary material integrity requirements of GDC 14 as it relates to maintaining acceptable secondary water chemistry control during normal operation and anticipated operational occurrences by limiting corrosion of steam generator tubes and materials, thereby limiting the likelihood and magnitude of primary- to-secondary coolant leakage. 4. 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