Document: NUREG-0800
Document ID: c41ee259-fb35-4539-bbe5-ca79a00f9f6f
Document Type: srp
Title: COOLING WATER SUPPLYLOW WATER CONSIDERATIONS1
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070258.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.11
CFR Part: 
CFR Title: 

Content:
e structural design bases for the plant.10 For standard design certification applications, the cooling water inlet and air temperatures are specified in the site parameter envelope that must be met by the plant design.11 Review Interfaces12 1. The ECGB also performs reviews under: a. SRP Section 9.2.5 for analysis of the dependability of the ultimate heat sink. b. SRP Section 2.4.7 to ensure that safety-related facilities and water supplies are not affected by ice, flooding, or blockage. c. SRP Sections 2.4.8 and 2.4.9 for dependability of the cooling water supply. d. SRP Section 2.3.6 (proposed) for the adequacy of the site parameter envelope specified in standard design certification applications.13 2. The ECGB coordinates other branch evaluations that interface with the overall review, as follows: a. The Plant Systems Branch (SPLB): i. Reviews the ultimate heat sink to avoid any duplication with ECGB's system analysis of water supply structures and conveyance systems to ensure that failure of one component will not cause failure of the entire system. 2.4.11-3 DRAFT Rev. 3 - April 1996 ii. Consults with ECGB when design criteria are not firmly established for the structural or mechanical design bases of the plant regarding the cooling water supply. iii. Obtains conclusions from ECGB on the analysis of the dependability of the ultimate heat sink. iv. Reviews emergency procedures that, in the event of an accident, may be required to obtain the use of alternate water supplies and (if the independently estimated water supply appears to be less than 30 days) to determine that there is continuity of the water supply. v. Determines and supplies ECGB with the design maximum temperature and heat load of the design basis accident. vi. Determines the adequacy of any required alternative water supply sources to ensure the continuity of the water supply. b. The Mechanical Engineering Branch (EMEB) ascertains, on request by ECGB, whether mechanical effects are properly