ML20054K033

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Offnormal Event Procedure 05-1-02-V-14, Main Generator Primary Water High Conductivity,Safety-Related, Revision 11
ML20054K033
Person / Time
Site: Grand Gulf  Entergy icon.png
Issue date: 06/12/1982
From:
MISSISSIPPI POWER & LIGHT CO.
To:
Shared Package
ML20054J949 List:
References
05-1-02-V-14, 5-1-2-V-14, NUDOCS 8206300319
Download: ML20054K033 (3)


Text

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  • PLANT OPERATIONS MANUAL

,, ,' r-Volume 05 05-1-02-V-14 Section 02 Revision: 11 Date: 6-12-82 4

0FF-NORMAL EVENT PROCEDURE c.

MAIN GENERATOR PRIMARY WATER HIGH CONDUCTIVITY SAFETY RELATED

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CRANp CULF NUCLEAR STATION OFF-NORMAL EVENT PROCEDURE

Title:

Fain Generator Prirrary No.: 05-1-02-V-14 Revision: 11 Page: 1 Water High Conductivity l l

1.0 PURPOSE / DISCUSSION 1.1 The purpose of this procedure is to provide instructions for the operator if the main generator primary water conductivity increases above normal.

1. 2- This procedure will not interface with the Emergency Plan.

1.3 There are three conductivity cells in the primary water system, all of which transmit to indicators on-the Generator Auxiliary Cabinet IH22-P148.

2.0 SYMPTOMS

. . 2.1 Either one or both of following alams on panel 1H13-P680:

2.1.1 GEN PW TROUBLE 2.1.2 CEN CAB TROUBLE 2.2 Abnomal conductivity indication and alarm on any of 'the ~~ '* ~

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-located ~on local panel D122-P148. - == - *T L -

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2.2.1 l'N43-CI-R010 Downstream Deionizer - 0.5 umho/cm.

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IN43-CI-R011 Main Circuit - 0.5 umho/cm.

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...- - 2.2.3 IN43-CI-R012 Leakage Water - 1.5 umho/cm.

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The location'of the alarming conductivity cell in the primary water system may help determine the source of contamination.

3.0 AUTOMATIC ACTIONS __

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4.0 IMMEDIATE OPERATOR ACTION 4.1 Dispatch operator to generator auxiliary panel, and verify which conductivity cell is in alarm.

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GdAND GULF NUCLEAR STATION OFF-NORMAL EVENT PROCEDURE l

Title:

Main Generator Primary No.: 05-1-02-V-14 , Revision: 11 Page: 2 l Water High Conductivity 4.2 If only one (1) conductivity cell is rising rapidly, operator judgement will have to be used. If the remaining two (2) conductivity cells have not changed, the most probable cause of the. conductivity increase is'a defective cell. Take water samples to verify conductivity.

4.3 If conductivity is rising rapidly on more than one conductivity cells and the conductivity alarm is reached, trip the Turbine, then open the generator output breaker. Immediately verify the generator field breaker is open. If the power 'is above bypass capability the reactor will scram, I carry out ONEP 05-1-02-I-1, Reactor Scram, and 05-1-02-I-2, Turbine and Generator Trips.

5.0 SUBSEQUENT ACTION 5.1 Shift to the standby primary water coolers.

5.2 Monitor primary water conductivity af ter shif ting coolers to determine if cooler leakage is the cause of the problem.

5.3_ .C_he_ck .the primary water-system ,for excessige makeup.or- other unuaged ,

in-leakage. .

5.4 If ion exchanger resin depletion is the cause of the conductivity

  • problem, as indicated on IN43-CI-R010, replace the depleted resin.

, 5.5, Continue to monitor conductivity until the cause is found and corrected.

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