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:
and 11.3. 4. ASBSPLB reviews the effect of SGBS high- and moderate-energy piping failures under 48 SRP Section 3.6.1 to assure ensure that other safety-related systems are not rendered inoperable. For standard design certification reviews under 10 CFR Part 52, the procedures above should be followed, as modified by the procedures in SRP Section 14.3 (proposed), to verify that the design set forth in the standard safety analysis report, including inspections, tests, analysis, and acceptance criteria (ITAAC), site interface requirements and combined license action items, meet the acceptance criteria given in subsection II. SRP Section 14.3 (proposed) contains procedures for the review of certified design material (CDM) for the standard design, including the site parameters, interface criteria, and ITAAC.49 IV. EVALUATION FINDINGS CMEBEMCB verifies that sufficient information has been provided and that the review is 50 adequate to support conclusions of the following type, to be included in the staff's safety evaluation report (SER):51 The steam generator blowdown system (SGBS) controls the concentration of chemical impurities and radioactive materials in the secondary coolant. The scope of review of the SGBS included piping and instrumentation diagrams, seismic and quality group classifications, design process parameters, and instrumentation and process controls. The review has included the applicant's evaluation of the proposed system operation and the applicant's estimate of the controlling process parameters. The SGBS design meets the primary boundary material integrity requirements of General Design Criterion 14 as it relates to maintaining acceptable secondary water chemistry control during normal operation and anticipated operational occurrences by reducing corrosion 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