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:
hat they are within the delay times used in the accident analyses. e. The ECCS design adequacy for all modes of reactor operation (e.g., full power, low power, hot standby, cold shutdown, partial loop isolation) is confirmed. 23. The proposed plant technical specifications are reviewed to: 6.3-9 Rev. 2 - April 1984 a. Confirm the suitability of the limiting conditions of operation, including the proposed time limits and reactor operating restrictions for periods when ECCS equipment is inoperable due to repairs and maintenance. The means of indicating that safety systems have been bypassed or are inoperable should be in accordance with Regulatory Guide 1.47 (Ref. 11). b. Confirm that the limiting conditions of operation ensure that the specified operating parameters (minimum poison concentrations, minimum coolant reserve in storage, etc.) are within the bounds of the analyzed conditions. c. ,Verify that the frequency and scope of periodic surveillance testing is adequate. 24. The reviewer confirms that the design provides the capability for periodi- cally demonstrating that the system will operate properly when an accident signal is received. That is, it should be demonstrated by an applicant that pumps and valves operate on normal and emergency power and that water pressure and flow are as designed when the plant is operating (periodic system surveillance). When the plant is shut down for refueling, the system should be tested for delivery of coolant to the vessel. 25. The RSB reviewer contacts his counterpart in PSRB to discuss any special test requirements and to confirm that the proposed preoperational test program for the ECCS is in conformance with the intent of Regulatory Guide 1.68 (Ref. 12). 26. The RSB review evaluates the applicant responses to the following Task Action Plan items: (a) II.B.8 of NUREG-0718 (CPs only) (b) III.D.1.1 of NUREG-0737 and NUREG-0718 (CPs and OLs) (c) II.E.2.1 of NUREG-0660 (d) II.K.3(10) of NUREG-0660 (e) II.K.3(15) of NUREG-0660