ML20074A818

Rev 6 to Emergency Operating Procedure FNP-1-EOP-15.0, Anticipated Transients W/O Trip (Atwt)

ML20074A818
Person / Time
Site:	Farley
Issue date:	05/10/1983
From:	ALABAMA POWER CO.
To:
Shared Package
ML20074A803	List: ML20074A802 ML20074A811 ML20074A818
References
FNP-1-EOP-15.0, NUDOCS 8305160107
Download: ML20074A818 (5)

Text

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FNP-1-EOP-15.0 May 10, 1983 Revision 6 FARLEY NUCLEAR PLANT EMERGENCY OPERATING PROCEDURE FNP-1-EOP-15.0 S

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. FNP-1-EOP-15.0 FARLEY NUCLEAR PLANT UNIT 1 EMERGENCY OPERATING PROCEDURE EOP-15.0 ANTICIPATED TRANSIENTS WITHOUT TRIP (ATWT) 1.0 Purpose This procedure provides guidelines for operator action in the event a reactor trip and/or turbine trip does not occur automatically if either trip is required.

2.0 Symptoms 2.1 If entering this procedure from EOP-5 (Reactor Trip) AND any one of the following conditions exist (evaluate in the order given):

2.1.1 TSLB bistables tripped indication meeting the required coincidence for a reactor trip or 2.1.2 Indicators having reached a reactor trip setpoint.

l I 2.2 If entering this procedure because Nuclear Power is NOT decreasing and all full length rods are NOT fully inserted with a reactor trip being called for, as defined by:

2.2.1 TSLB Bistable tripped indication meeting the required coincidence for a reactor trip or 2.2.2 Any condition requiring a reactor trip.

l l 2.3 Failure to obtain a turbine trip following a l turbine trip signal as indicated by the turbine l throttle valves NOT closed.

1 3.0 Automatic Actions None UNCONTROLLED COPY

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, FNP-1-EOP-15.0 NOTE When a step is completed place h the operators initial or the value noted in the space provided in the left hand margin.

4.0 Immediate Operator Actions 4.1 Reactor does not trip:

4.1.1 Manually trip the reactor from the Main Control Board. IF not successful, then:

open the supply breakers for the MG sets with main control board handswitches.

4.1.2 Go to local panel and manually open and rack out Reactor trip breakers and Reactor trip bypass breaker.

4.2 Turbine does not trip:

4.2.1 Attempt to manually trip the turbine from the Main Control Board. IF the turbine does not trip, then:

4.2.2 De-energize the E.H. Pumps lA & 1B from the Main Control Board. Start all available auxiliary feed pumps and throttle as necessary to maintain S/G level in the narrow range. IF a turbine trip has not occurred, then:

4.2.3 Close the MSIV's.

5.0 Subsequent Operator Actions 5.1 IF following an automatic turbine trip signal, the turbine does not trip and causes an uncontrolled cooldown, emergency borate in accordance with EOP-6.0.

5.2 When a reactor trip does occur, refer to EOP-5.0.

5.3 When a turbine trip does occur, refer to AOP-3.0.

5.4 IF a safety injection signal occurs, refer to EOP-0.

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REACTOR CONTROL PANEL - VERTICAL SECTION O O O