ML20099J072

App 8A of RESAR-SP/90 Westinghouse Advanced PWR Module 9, Instrumentation & Controls & Electric Power, Electric Power - Interfaces

ML20099J072
Person / Time
Site:	05000601
Issue date:	11/30/1984
From:	WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
To:
Shared Package
ML19269B210	List: ML20099H953 ML20099H959 ML20099H973 ML20099H983 ML20099H988 ML20099H994 ML20099J001 ML20099J008 ML20099J015 ML20099J030 ML20099J045 ML20099J053 ML20099J072 ML20099J088 ML20099J098 ML20099J113 ML20099J115 ML20099J131 ML20099J137 ML20099J150 ML20099J155 ML20099J168 NRC-85-3015, Forwards Nonproprietary & Proprietary RESAR-SP/90 Westinghouse Advanced PWR Module 9, Instrumentation & Controls & Electric Power. Application for Withholding Proprietary Info (Ref 10CFR2.790) Encl
References
NUDOCS 8503190585
Download: ML20099J072 (1)

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l APPENDIX BA ELECTRIC POWER - INTERFACES O 8A.2 0FFSITE POWER SYSTEM

1. Electrical power f rom the power grid to the plant site shall be supplied by two physically independent circuits designed and located so as to minimize the likelihood of simultaneous failure, i

2. Each of these independent circuits shall have the capability to safely shutdown the unit. The first preferred circuit shall be connected via a main transformer and unit auxiliary transformer, and shall have the capacity to supply the startup and all the auxiliary loads (both group 1 and group 2) simultaneously.

3. The second preferred power circuit shall supply power to the standby O transformer and shall have the capacity to supply all the safety-related ,

I loads and all the _ auxiliary loads (both group 1 and group 2) simultaneously. In addition, an ESF transformer will be provided to supply Class lE busses only. This will require independent connection to the offsite source.

4. The loss of the nuclear unit or the most critical unit on the grid shall not result in the loss of offsite power to the Class 1E busses.

5. The switchyard power circuit breaker control shall be designed with

, duplicate and redundant systems, i.e., two independent battery systems, two trip coils per breaker, and two independent protective relay schemes.

O O i WAPWR-I&C/EP 8A.2-1 NOVEMBER, 1984 8267B:ld

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