ML20054K030

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Offnormal Event Procedure 05-1-02-V-12, Condensate High Conductivity,Safety-Related, Revision 10
ML20054K030
Person / Time
Site: Grand Gulf  Entergy icon.png
Issue date: 03/22/1982
From:
MISSISSIPPI POWER & LIGHT CO.
To:
Shared Package
ML20054J949 List:
References
05-1-02-V-12, 5-1-2-V-12, NUDOCS 8206300316
Download: ML20054K030 (5)
v • d • e


Text

r PLANT OPERATIONS MANUAL Volume 5 05-1-02-V-12 Section 02 Revision:

10 Date: 3-22-82 4

OFF-NORMAL EVENT PROCEDURE CONDENSATE HIGH CONDUCTIVITY SAFETY RELATED

{'i Prepared:

Reviewed:

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Nuclear Plant Quality / Superintendent Techfiical Review d

Reviewed:

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Operatiohs Superintendent Approved:

( Assi tant Plant Manager b // b PSRC:

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List of Effective Pages:

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Y' Page:

Revision:

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l-4 10 k-8206300316 820625 PDR ADOCK 05000416 P

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i GRAND CULF NUCLEAR STATION OFF-NORMAL EVENT PROCEDURE l

Title:

Condensate High INo.:

05-1-02-V-12 IRevision:

10 IPage:

1 l

hfh l

Conductivity l

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1.0 PURPOSE / DISCUSSION

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1.1 The purpose of this procedure is to provide the operator with the instructions necessary should high conductivity occur in the Condensate System.

1.2 This procedure may interface with the Emergency Plan and the Emergency Procedure.

I 1.3 The water chemistry limits _of the reactor coolant system are established to prevent damage to the reactor materials in contact with the coolant.

The rector vessel acts as a.large concentrator, therefore, low levels of conductivity or chlordies in the condensate system can result in high conductivity or chlorides levels in the reactor. Chloride limits are specified to prevent stress corrosion cracking of the stainless steel at elevated temperatures. Chloride limits vary with power operation of the reactor. Conductivity measurements are required on a continuous basis since changes in this parameter are an indication of abnormal conditions.

When conductivity is within limits, the pH, chlorides, and other impurities affecting conductivity must also be within their acceptable limits. The Condensate Cleanup System is designed to reduce conductivity and prevent chlorides from entering the reacetor vessel.

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2.0 SYKPTOMS

- 2.1'. One.or more. of_ the..foll.owing_ alarms..on_ Panel J1113-P680:

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2.1.1 Condensate Pump Discharge Conductivity High

~2.i.2~~CondensatiDemineralizer C$mbinesi Ef fluent Cond'uctivity Higii '

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I 2.1,. 3 RFP Dishcarge Conductivity,Hi.gh. _,.

2.1.4 Condenser Tube Sheet Leakage High

.,..2.1.5.. _. Condenser Tube Break Leakage High __

2.1.6 Condensate Demineralizer Sodium High 2.1.7 Condensate and Condensate Demineralizer Sodium High 2.1.8 RWCU Filter - Demin Influent High-Low Conductivity 2.1.9 Condensate Storage Water Conductivity High-Low 2.1.10 Reactor Recire Water High-Low Conductivity h.;

GRAND GULF NUCLEAR STATION OFF-NORMAL EVENT PROCEDURE l

Title:

Condensate High INo.:

05-1-0 2-V-12 l Revision:

10 lPage: 2 l

l Conductivity l

l l

l (5$

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i 2.2 One or more of the following alarms on Panel 1H22-P164:

2.2.1 _ Condenser Tube Sheet Leakage High 2.2.2 Condenser Tube Break Leakage High t

j 2.2.3 Condensate Demineralizer Combined Ef fluent Sodium Concentration High.

2.3 Routine samples indicate increasing Reactor Coolant Conduc t ivity 2.4 Unexplained increase in hotwell level.

2.5 Rapid depletioa of condensate demineralizers.

3.0 AUTOMATIC ACTIONS

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3.1 None 4.0 IMMEDIATE OPERATOR ACTIONS t

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4.1 Carry out the actions for the appropriate case of the Operation Action

Table, fa, 4

Q.t,k 4.2 Notify Shif t Supervisor of plant conditions.

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4.3 If the reactor has been scrammed refer to ONEP 05-1-02-I-1, Reactor Scram.

5.0 SUBSEQUENT ACTIONS i

5.1 If the reactor is still critical, 5.1.1 Locate and correct the cause.

5.1.2 Operate RWCU at maximum capacity.

i 5.2 If the reactor has been shutdown, j

5.2.1 Monitor reactor water chemistry.

i, 5.2.2 Locate and correct the cause.

5.2.3 Cooldown per IOI 03-1-01-3, Plant Shutdown.

5.2.4 Operate RWCU at maximum capacity.

5.3 Observe Technical Specification Section 3/4.4.4, Reactor Coolant System Chemistry.

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e CRAND CULF NUCLEAR STATION OFF-NORMAL EVENT PROCEDURE ITitle: Condensate High INo.:

05-1-02-V-12 l Revision:

10 lPage:

3 l

hsh l

Conductivity l

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OPERATOR ACT' ION TABLE s

1 C1 Ion Conc.l l

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(ppm) l l

l Conductivity umho/cm

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Combined l

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l Cond. Pump lDemineralizerlReactor l Reactor Wateel l

I Hotwell l Discharge l Outlet I Water l

l Action l

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11.

Increase deep l

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bed l

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frequency.

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12. Take grab sample l I >1.0 1

<2.0 1

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of Reactor water l l

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& feeding water l 1

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for chloride '#

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analysis, l

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concentrate l

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chloride at I

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source.

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section leak l

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14.

Isolate the side l l

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Reduce power and l l Case #2 l

locate the leak, l y

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Take grab sample l l

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and feedwater forl l

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chloride analzsisl l

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lstartup I startup 13.

Isolate the l

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condenser water i l

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14.

Increase deep 1

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bed regeneration l l

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15.

If the leak l

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for repairs.

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GRAND GULF NUCLEAR STATION OFF-NORMAL EVENT PROCEDURE l

Title:

Condensate High lNo.:

05-1-0 2-V-12 l Revision:

10 lPage: 4 i

I Conductivity l

l l

l r

0,PERATOR ACTION TABLE (cont'd) l l Cl Ion Conc.1 l

l Conductivity umho/cm 1

(ppm) l l

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l Combined l

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l Cond. Pump lDemineralizerlReactor l Reactor Waterl l

l Hotwell I Discharge l Outlet l Water l

l Action l

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Same as in Case l

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conduct an l

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while locating l

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Be prepare to l

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sc ram, if I

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required.

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11.

Scram the l

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reactor.

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12.

Isolate the l

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hotwell reject l

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to the CST.

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14. Take grab sample !

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of Rx water, l

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feedwater and CSTl l

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chloride l

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analysis.

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11. Trip feedwater l

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pumps and l

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refer to ONEP l

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05-1-02-V-7, Lossi l

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12. Carry out the l

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actions of Case l

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  1. 4 above.

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