ML19330B716

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Abnormal Operating Procedure,Condenser Leakage, Revised
ML19330B716
Person / Time
Site: Farley Southern Nuclear icon.png
Issue date: 07/25/1980
From:
ALABAMA POWER CO.
To:
Shared Package
ML19330B712 List:
References
FNP-2-AOP-25.0, NUDOCS 8008050417
Download: ML19330B716 (7)
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i VOLUMS 5 FWP-2-AOP-25.0 i Ot:1y 25, 1980 t Revision O j-t l

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ABNORMAL OPERAMNG PROCEDURE -f i

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VOLUME 5 FNP-2-AOP-25.0 l 7

FARLEY NUCLEAR Pl>.HT f UNIT 2 ABNORMAL OPERAT1HG PROCEDURE ACP-25.0 l CONDDISER LEAKAGE 1.0 Purnose {

t To provide the symptoms, automatic actions, immediate i operator act. ions, and subsequent operator actions for t a condenser leak which allows circulating water to  !

enter the condensate system.  !,

i 2.O Symptoms -

l, iI 2.1 The Shift Foreman has been notified by the .

Chemistry Group that a possible condenser tube {

leak exists. ,

i1 2.2 indication of increasing Cation conductivities 'l with possible high water analysis alarm on the !l following conductivity recorders:  !

- . .. i N2P15SR4023A - Steam Generator' Inlet 2.2.1 I (Feedwater) Cation Conductivity.

2.2.2 H2P15SR40233 - Steam Generator Outlet 5 Cation Conductivity.

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i 2.2.3 N2P15SR4024A - Condenser Hotwell A  ;

Cation Conductivity. j 2.2.4 H2P15SR40243 - Condenser Hotwell B  !

Cation Conductivity.

3.0 Automatic Actions I f

Hone i 4.0 Imnediate Operator Actions I

G.1 Determine if an actual condenser tube leak ~

exists by referring to recorded parameters in  !

the Control Room (CR) and Sample Room (SR). j 4.1.1 Cation conductivity - The most rapid -

indication of a condenser leak. Increasing l conductivity would be expected on the  ;

condensate (CR), the feedwater (CR) and steam generator blov4own (SR).  :

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i 4.1.2 PH - (SR) wi13 show a measurable increase if the leak is very large but thin effect may not be observable on small leaks.

4.2 Request a confirning chemical analysis on steam generator blowdown chlorides.

4.2.1 Thit analysis should be used to confirm cation conductivity indications of a leak.

5.0 Subsequent Operator Actions NOTE: Reduce power to the level necessary to allow ,

actions specified in following paragraphs to be completed.

5.1 If the FI:EDWATER AND SGBD cation conductivity remains < 2 pahos/cs.

5.1.1 Reduce power to 600MW -

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HOTE: Power reduction can be delayed, for a period not to siceed ~24 hours, to meet load demands. .

5.1.2 Determine, from the chemistry data, which half of the condenser contains the leak. .

l 5.1.3 Select a water box in the affected con-denser half, and close the circulating -

Water inlet and outlet valves, and open j the vent and drain.  !

5.1.4 Observe condensate cation conductivity i and fluctuations in vacuum for evidence of leak being uncovered. i NOTE: When power is reduced, the  ;

catio.n conductivity will rise because actual concentration of contaminants Will increase as a result of decreased con- i densate/ steam flow. When the ,

water level in the water box  ;

is drained below the leaking  :

tube, the inflow of contaminated i water will stop and the cation l conductivity will go down. '

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t Ia 5.1.5 Open water box as soon as possible 14 during draining. i r

5.1.5.1 Listen for any sound changes (F

_ which night indicate location P of leak. F# l p-5.1.6 If leak is not found return water box *L and circulating water system to that 3 condenser half to operation per SOP-26.0, @

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5.1.7 Repeat steps 5.1.3 to 5.1.6 until leaking fl.

tubes are found, and defective tubes are R plugged. . s h

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71 5.1.8 When repair is completed return to J:c desired power level. Maintain 3GBD at maxiraum rate until chemistry indicates fi 9

S/G's are clean, b

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5.2 3 f the FEEDWATER OJ SCED cation conductivity > 2 y/,;

pmhos/cm and < 7 pmhos/cm

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5.2.1 Commence an orderly power reduction to '

N 600MW.  %

5.2.2 1solate condensate dump to condensate l=

storage tank, h')

5.2.3 If necessary to reduce Hotwell Level, open condensate drains. h' r.

5.2.4 Locate and repair leaking tubes per p steps 5.1.2 through L.1.7.

5.2.5 When repairs are completed per-form one y@

d' of the following: K Ts:

5.2.5.1 With FEEDWATER AND SGBD cation @!

conductivity 5, 7 pmhos/cm S, return to rated power. Mkintain a;i SGBD at maximum rate until Ji chemistry indicates S/G's are {y clean. -

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91 5.2.5.2 With FEEDWATER OR SCED Cation El conductivity > Tpmhos/cm. g;

n. Place unit in hot standby
b. Perf orn steps 5.3.5 through r

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c. Maintain SOBD at maximum rate, and condensate dump to CST isolated until notified by Chemistry Group.

5.3 3 f the FEEDWATER OR SCED cation conductivity > 7 pmhos/cm 5.3.1 Co:cmence shutdown to hot standby at the roaximum rate (Be in hot standby within 30 min.)

5.3.2 1solate condensate dump to condensate ,

storage tank.

5.3.3 Isolate main feedwater and transfer to auxiliary feedwater.

5.3.4 Locate and repair leaking tubes per steps 5.1.2 through 5.1.7.

5.3.5 Cooldown to Tave i S400F

, 5.3.6 Close MSlV's and break condens,er vacuum.

5.3.7 When condensate and feedwater are <

2000F drain hotwell, condensate, and '

reedwater Systems.

5.3.8 Flush condensate and Feedwater Systems per Chemistry Group instructions.

5.3.9 When condenser cation conductivity is <

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0.5 pmhos/cm restore systems to normal ~

per SOP-21.0 5.3.10 Determine from the Chemistry Group, the desired course of action, and steam generator endpoint chemistry parameters, and proceed as directed.

5.3.10.1 If steam generators are not to l be drained, flushing should continue until cation conduct-l 1vity is i 7'pmhos/cm ahd chlorides are 10.5 PPM.

5.3.10.2 Proceeding to cold shutdowrr and rinsing steam generator ,

tubes r.hould be considered if ll the following parameters are cxceeded (SCBD). [

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b. Cestion Ccuductivit5' .> 35  :.I pmhos/ct: !F l v.-

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