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:
cable to achieve design basis differential pressure during ECCS valve testing, a qualification test (under design-basis differential pressure) prior to installation and inservice valve tests conducted under the maximum practicable differential pressure is sufficient (References 21 through 24).109 25. The RSB reviewer contacts his counterpart in PSRB HQMB to discuss any special 110 111 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) . 112 26. The RSB reviewer evaluates the applicant responses to the following Task Action Plan 113 items: (a) II.B.8 of NUREG-0718 (CPs only)114 (ab) III.D.1.1 of NUREG-0737 and NUREG-0718 (CPs and Ols); the reviewer verifies that those portions of the ECCS located outside of containment that contain or may contain radioactive material following an accident are included in a leakage control program. The leakage control program should include periodic leak testing and measures to minimize leakage from the ECCS.115 (c) II.E.2.1 of NUREG-0660 116 (d) II.K.3(10) of NUREG-0660117 (be) II.K.3(15) of NUREG-0660; the reviewer should verify that BWR applicants' designs for pipe-break detection circuitry will not cause inadvertent system isolation during pressure spikes resulting from HPCI and RCIC system initiation. For those plants utilizing a time delay relay, the minimum expected response time will be plant specific, the maximum response time shall be no greater than seven seconds unless the applicant provides proper justification for using a longer response time (Reference 25). 118 DRAFT Rev. 3 - April 1996 6.3-18 (f) II.K.3(18) of NUREG-0660119 (cg) II.K.3.(21) of NUREG-06600737; the reviewer should verify that BWR applicants have studied the design of BWR core spray and low pressure coolant injection systems to ensure that the systems will automatically restart on loss of water level, after having been manually stopped, if an