Document: NUREG-0800
Document ID: e6b7e6d3-a99d-424d-bfa0-491bc48f46cf
Document Type: srp
Title: ISOLATION CONDENSER SYSTEM (BWR)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0708/ML070810517.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.4.13
CFR Part: 
CFR Title: 

Content:
the ICS is housed in a structure that provides adequate protection against wind, tornadoes, floods, and missiles, as appropriate, based on a review of its design and design criteria. 12. The reviewer verifies the automatic and manual actions necessary for proper functioning of the ICS and redundant or backup systems (RWCU/SDC, ADS, PCCS, and GDCS) for completeness and practicality when used for residual heat removal per the criteria of item II.K.1.22 of NUREG-0737. 13. The reviewer examines the ICS break detection provisions to determine that the system is protected against spurious trip signals. For plants using a time delay for this protection, the reviewer verifies that the minimum and maximum expected response times are adequate. For plants that do not use a time delay for spurious isolation protection, the reviewer verifies that the applicant has provided proper justification for the design, and that the applicant’s test program and test results are adequate. 14. The reviewer confirms that the ICS can withstand a LOOP to its support systems for their period of need per the criteria of item II.K.3.24 of NUREG-0737. 15. The reviewer confirms, per the criteria of item II.K.3.13 of NUREG-0737, that analyses have been provided or referenced to determine the need to separate the initiation parameters of the ICS and redundant or backup systems (RWCU/SDC, ADS, PCCS, and GDCS). On the basis of these study results, the reviewer evaluates the ICS design for appropriate provisions. In addition, the reviewer verifies that the ICS provides automatic restart capability. 16 The reviewer confirms that the plant can be brought to a safe-shutdown condition as defined in Section C of SECY-94-084. 17. The reviewer evaluates the adequacy of the ICS design features that have been provided to prevent damaging water (steam) hammer from such mechanisms as voided discharge lines, water entrainment, and steam bubble collapse. If the normal water supply is above the discharge lines,