Document: NUREG-0800
Document ID: d0e1f2cb-f296-449d-9f9a-85a571917a44
Document Type: srp
Title: EMERGENCY CORE COOLING SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340709.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.3
CFR Part: 
CFR Title: 

Content:
imary review responsibility for SRP Section 7.3, reviews the adequacy of ECCS-associated controls and instrumentation with regard to the features of automatic actuation, remote sensing and indication, and remote control. The Containment Systems Branch (CSB) verifies that portions of the ECCS penetrating the containment barrier are designed with acceptable isolation features to maintain containment integrity for all operating conditions, including accidents, as part of its primary review responsibility for SRP Section 6.2.4. The Power Systems Branch (PSB) as part of its 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. The Mechanical Engineering Branch (MEB), as part of its primary review responsibility for SRP Section 3.9.3, reviews the loading combinations (operational, LOCA, and seismic) and the associated stress limits. In addition, the MEB, as part of its primary review responsibility for 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. The ECCS is also reviewed by MEB to assure that system and 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 Sectons 3.2.1 and 3.2.2. The Structural and Geotechnical Engineering Branch (SGEB) reviews the structures housing the ECCS for the proper seismic classification as part of its primary review responsibility for SRP Sections 3.8.1, 3.8.2, and 3.8.3. The Materials Engineering Branch (MTEB), on a generic basis, reviews the thermal shock effect of water injected into the primary coolant system from the ECCS. The Procedures and Systems Review Branch (PSRB) reviews the proposed preoperational and initial startup test