Document: NUREG-0800
Document ID: ea7ce8f5-32bf-4d8c-a653-e964bff0ef48
Document Type: srp
Title: EMERGENCY CORE COOLING SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070448.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.3
CFR Part: 
CFR Title: 

Content:
4. 4. The Power Systems Branch (PSB) Electrical Engineering Branch (EELB) as part of its 21 primary review responsibility for SRP Sections 8.1, 8.2, 8.3.1, and 8.3.2, reviews the adequacy of the power supply for the ECCS. In addition, as part of its primary review responsibility for SRP Section 8.4 (proposed), the EELB reviews the plant's overall capabilities to withstand or cope with, and recover from a Station Blackout (SBO), and coordinates with the review of the ECCS if the system is required to ensure adequate core cooling as required by 10 CFR 50.63 and the guidance of Regulatory Guide 1.155. 22 5. The Mechanical Engineering Branch (EMEB) performs the following reviews: a. The ECCS is also reviewed by MEB EMEB to assure that system and 23 components have the proper seismic and quality group classifications. This aspect of the review is performed as part of its primary review responsibility for SRP Sections 3.2.1 and 3.2.2. DRAFT Rev. 3 - April 1996 6.3-4 b. In addition, tThe MEB EMEB , as part of its primary review responsibility for 24 SRP Section 3.6.2, reviews the criteria used for postulating the effects of pipe breaks both inside and outside containment on ECCS. This review includes criteria used for postulating the effects of pipe whip, jet impingement forces, and any related environmental conditions. c. The Mechanical Engineering Branch (MEB EMEB ), as part of its primary 25 review responsibility for SRP Section 3.9.3, reviews the loading combinations (operational, LOCA, and seismic, and thermal stratification loads ) and the 26 associated stress limits. d. The EMEB also reviews adequacy of the inservice testing program for pumps and valves as part of its primary review responsibility for SRP Section 3.9.6. For new applications, the SRXB review should coordinate with EMEB to ensure the ECCS piping and component configurations allow for full flow testing of safety related pumps and check valves and provisions are made to allow for the use of advanced