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:
(ASB), as part of its primary review responsibility for SRP Section 3.6.1, evaluates the effect of high- and moderate-energy system piping failures to assure that safety-related equipment will not be made inoperable, evaluates the capabilities of the high energy portion of the SGBS to withstand the effects of internally generated missiles both outside containment in SRP Section 3.5.1.1 and inside containment in SRP Section 3.5.1.2; the Containment Systems Branch (CSB) determines that the blowdown lines penetrating the primary containment are isolated on a containment isolation signal and evaluates containment isolation dependability (NUREG-0737 Task II.E.4.2) as part of its primary review responsibility in SRP Section 6.2.4. The review of the quality assurance program is performed by the Quality Assurance Branch as part of its primary review responsibility for SRP Sections 17.1 and 17.2. For those areas of review identified above as part of the primary review responsibility of other branches, the acceptance criteria necessary for the review and their methods.of application are contained in the referenced SRP section of the corresponding primary branch. II. ACCEPTANCE CRITERIA CMEB accepts the design of the steam generator blowdown system if the relevant requirements of General Design Criterion 1, 2, and 14 are met. The relevant requirements are as follows: 1. General Design Criterion 1, as it relates to system components being designed, fabricated, erected, and tested for quality standards. 2. General Design Criterion 2, as it relates to system components designed to seismic Category 1 requirements. 3. General Design Criterion 14, as it relates to secondary water chemistry control are complied with so that the primary coolant boundary material integrity will be maintained. The steam generator tubes are part of the reactor coolant pressure boundary, and these tubes could be degraded by adverse chemistry conditions on the secondary site. The SGBS primary function is