ML20042C504

LER 82-006/04L-0:on 820225,during Normal Operation,While Tempering Plant Inlet Canal,Plant Discharge Temp Exceeded 85 F.Caused by Increase in Lake Temp Due to Weather Conditions & Inability to Fully Lower Tempering Gate

ML20042C504
Person / Time
Site:	Nine Mile Point
Issue date:	03/23/1982
From:	Mclaughlin K NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20042C499	List: ML20042C498 ML20042C504
References
LER-82-006-04L, LER-82-6-4L, NUDOCS 8203310462
Download: ML20042C504 (2)

Text

u.

17 771 '

LICENSEE EVENT REPORT

/

lh CONTROL BLOCIC. l l l l l l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

I 6 l0 l t8 l9 lN lYLICENSEE 7 lN lM CODE lp l1 l@15l 0l 0l -l 0l 14 0l 0l 0l 0l -l 0l0 [@l 4 uCENSE NUM8ER 2S 26 l 1LICENSE l 1 l TYPE 1l 1l@l JO l

67 CAT 58 l@

cOvT F 8 EE Ql0 60 l 5 l0 l0 l0DOCKET 61 l2 l2 l0 @l0 68l 2 l69 2 l 5 NUVSER l 8 l 2 l@l 0 l 3 l RE2 PORT EVENT OATE 74 7b l 3DATE l 8 l 280l@

EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h I O I 2 l l lharinn normal operation, while tempering the plant inlet canal, plant, discharge temperg-Io j al lture exceeded 85 F. This is in violation of Environmental Technical Specification l 1 o 14 l l 2.1.5, which concerns !! cat Treatment of the Circulating Water System. l IT Til l I 10 l E> I l l I C ! 71 l l l o !a l i I 7 8 , 80 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUSCODE CO*4PONENT CODE SU8 CODE SUSCODE 10191 7 8 lii IF lh Wh Wh l Zl Zl Zl Zl Zl Zlh W@ W@

9 10 11 12 13 18 19 20

_ SEQUENTI AL OCCUR R E NCE REPORT REVISION LE R'RO rVE NT YE AR REPORT NO. CODE TYPE NO.

a O'7 yg,R T

_ 21 l8 l2 l 22 b

2J l0 l0 l6 l 24 26 y

27 l0l4l ] b W 28 29 Ju 31 32 KEN 'A ON ON PL NT Mi HOURS 22 S8 IT FOR B. SU PL1 MANUF CTURER W Q W g l2lg JJ 34 35 W@

Je l0 l0 l0 l0 l 3/

]g gg lZ lg lXl9l9l9l@

40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h I i JM l The increase in plant discharge temperature was caused by an increase in lake tempera- 1 i i l ture due to weather conditions. The tempering gate could not be fully lowered to I i 7 l accomodate this condition. Shortly after the temperature increase was noticed, lake l i 3 l temperature decreased, bringing plant discharge temperature within acceptable limits. l gl A review of recording instrumentation revealed that the discharge temperature had l

$ ANS  % POWE R OTHER STA TUS DIS O Y DISCOVERY DESCRIPTION i s W@ li l0 lol@l NA l lAlhl Operator Observation l ACTIVITY CO TENT REteASt AMOUNT OF ACTIVITY LOCATION OF RELEASE WW 7 8 9

@o Or RELEASED @l 30 si NA 44 l' l 4s NA 80 l

PERSONNEL E XPOSURES NUMPER TYPE DESCRIPTION i l 71 '

• 10 l o l 01@L J@l NA l

,E RSO~~E L m;u',flE S

• NuuaE n oESCRiPfiONh

-7 i R 8 9 lOlol0l@l 11 12 NA 80 I

LOSS OF OH DAMAGE TO FACILITY TYPE oESCRIPTION

,[TTl W@l

, NA l i' 8 9 to 80 t eu8uCiTv 8203310462 820323 IsSuEn oESCRiPriou 45 NRC USF ONLY 12 i01 LNjhl PDR ADOCK 05000220

• NA S _.

PDR lllllIllIIlIII 7 8 9 10 68 69 80 r, NAME OF PREPARER Kevin McLaughlin (315)343-2110, X1203 PHONE:

e

/

1.ER 82-06 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS (Continued) been over 85 F for approximately 44 minutes, reaching a peak of 87.3 F. The plant tempering gate will be modified during the next refueling outage to correct this situation.

6 9

g r