ML18230B479

Functional Diagrams Feedwater Control & Isolation - Sheet 13

ML18230B479
Person / Time
Site:	Harris
Issue date:	01/14/1980
From:	Ebasco Services, Westinghouse Electric Corp
To:	Office of Nuclear Reactor Regulation
References
108D831
Download: ML18230B479 (1)

Text

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I. ANALOG. GATE CONSISTS OF 2 SOLENOID VENT VALVES IN SERIES TO REDUNDANTLY INTERLOCK THE AIR LINE BETWEEN COI4PAN"

'LFG pLAN'F EACH VALVE DIAPHRAGM AND ITS ASSOCIATED PQSITIONER. V,ER pNO OSIER AROEFNA NOCLEPR THE SOLENOID VALVES ARE DE-ENERGIZE TO VENT, CAUSING7 l'IEI'.

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THE MAIN FEEDWATER VALVE TQ CLOSE IN 5 SECONDS.

ALL CIRCUITS ON THIS SHEET ARE NQT REDUNDANT, EXCEPT WHERE INDICATED "REDUNDANT".

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4. THE REDUNDANT MANUAL RESET CONSISTS OF TWQ MOMENTARY CAROLI .4 POWER 8 LIGHT COMPANY CONTROLS ON THE CONTROL BOARD, ONE FOR EACH TRAIN. PECSTE >I SHEARON HARRIS NUC EAR POWER PLANT (44O T E 1) 800 MW(41 UN TS 1-4 1984 1990

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5. TRIPPING OF FEEDWATER PUMPS CAUSES CLOSURE OF I 3AIO Po QO AlQ+01TEM ASSOCIATED PUMP DISCHARGE VALVES. T [

6. THE FEEDWATER PUMPS AND PUMP DISCHARGE VALVES ARE SUPPLIED BY 'OTHERS.

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