05000220/LER-1978-001, Submittal of Licensee Event Report LER 78-01 Concerning Delta Temperature of the Discharge Water Exceeded Environmental Tech. Spec

Submittal of Licensee Event Report LER 78-01 Concerning Delta Temperature of the Discharge Water Exceeded Environmental Tech. Spec

ML18018B270
Person / Time
Site:	Nine Mile Point
Issue date:	01/13/1978
From:	Lempges T Niagara Mohawk Power Corp
To:	Grier B Office of Nuclear Reactor Regulation, NRC Region 1
References
NMP-0109 78-01
Download: ML18018B270 (10)

LER-1978-001, Submittal of Licensee Event Report LER 78-01 Concerning Delta Temperature of the Discharge Water Exceeded Environmental Tech. Spec

Event date:
Report date:
2201978001R00 - NRC Website

text

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS>

DISTRIBUTION FOR INCOMING MATERIAL 50-220 REC:

GRIER B H NRC ORG:

LEMPGES T E NlAGARA MOHAWK PWR DOCDATE: Oi/i3/78.

DATE RCVD: 04/i4/78 DOCTYPE:

LETTER NOTARIZED:

NO COPIES RECEIVED

SUBJECT:

LTR i ENCI i FORWARDING I ICENSE - EVENT REPT (RO 50-220/78-00i ON oi/04/78 CONCERNING DELTA TEMPERATURE OF THE DISCHARGE WATER EXCEEDED ENVIRON TECH SPEC

2. i. 5 DUE TQ

- AILURE OF GATE C CIRCULATING WATER DISCHARGE GATE TO DISHCARGE TUNNEL TO CLOSE PROPERLY... W/ATT.

PLANT NAME: NINE MILE PT UNIT LER (BACKFIT)

(DISTRIBUTION CODE M007>

REVIEWER INITIAL:

XJM DISTRIBUTOR INITIAL:

DISTRIBUTION OF THIS MATERIAL IS AS FOLLOWS

.,1NTERNAL:

EXTERNAL:

G FIL ~~~~W/ENCL 1

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THE END

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MYNIAGARA I

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WP-0109 NIAGARAMOHAWKPOWER CORPORATION/300 ERIE BOULEVARDWEST, SYRACUSE, N.Y. 13202/TELEPHONE (315) 474-1511 Janua/Icj 19, 1978 Boyce H.

G/Ii,e/L Oi/I,ecto/L United State5 Nuefea/i, Reg~/Ly CommQ a~on Region I 691 Pa/cia Avenue, Kmg otI Pruwm, PA.

19406

~lb RE:

Sock& No.

50-220 Sea/L A,. Gru.e/L:

In accotutance ~ Nne NLe Po~ NucZea/L S~n (tnLt Techni.cat! Speci,t'Iicatione, RIe he/teby aubmbt Licensee Event Repo/Lt LiER 78-01, I0tu.ch m in van o$ Se~n 2.1.5 o$ We Envmonm~ Tech'.cat' pe@i.pcatLoru.

TRQ

/1.epo/ct Nas complied in She

$o/Imat de5~gnatedkn NUREG-Olbl, dated July 1977.

Vefcy ~IJ you/L5,

,gg,',..:

. ('.-t.7,,"

Thomas E.

Lempge5 GenecaL Supe/cintendent-Nu&ea/L Gene/ut,Cion

)o/L R.R. Schneute/L Vi.ce P/I.mkde<-

Hect/Iic P/I.oduction C

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Attachments (2 eneLoau/I.e5) xc:

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s U. S. NUCLEAR REGULATORY COMMISSION LICENSE E EV EN T R EPOR Qi

{PLEASE PRINT OR TYPE ALLREOUIRED INFORMATION) 6 0

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0 Qs4 1

1 1

1 Qs~Qs 25 26 LICENSE TYPE 30 57 CAT 58 LICENSE NUMBER NRC FORM 366 (g 77) <<

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CONTROL BLOCK:

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LICENSEE CODE 14 is CON'T

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2 2

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4 7

8 6

0 1

1 3

7 8 0 7

8 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75

'REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10

~02 Durin reverse flow operations, del ta temperature of the discharge

~03 water exceeded speci ficati on 2. 1. 5 of the Envi ronmenta1 Techni ca 1 Specifications.

The allowed 50 degrees F,delta temperature was 6

exceeded by values of 0.5 to 2s6 degrees F

during the period two

~DB through six hours after reversal.

This condition resulted in minimal

~o7 safety implications.

~OB 7

8 9

80

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8

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SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

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X X

X 8 L~JQ>s

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10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LF RIRO EVENT YEAR REPORT NO.

CODE TYPE N

Qs sssoss

~78 Q

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Q>

~04 QT 21 22 23 24 26 27 28 29 30 31 32 ACTION.FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDR PRIME COMP.

COMPONENT TAKEN ACTION ON PLANT METHOD HOURS +22 SUBMITTED FORM SUB.

SUPPLIER MANUFACTURER

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g 026 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 027 O

C the circulatin water dischar e

ate to the dischar e tunnel il d o close corn letel

. This ermitted warm dischar e water to mix 3

with the inlet water raisin the tern erature of the inlet water.

Gate C will be investi ated durin the next refuelin outa e to 4

determine wh it han s

u 7

8 9

FACILITY STATUS 5 POWER OTHER STATUS QSO E

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NA 7

8 9

10 12 13 44 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ 6

~Z 033

~ZQ34 NA 7

8 9

10 11 44 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39

~l7

~<0 0 Qss Z

Qss sA 7

8 9

11 12 13 PERSONNEL INJURIES METHOD OF DISCOVERY

~AQ31 45 46 45 DISCOVERY DESCRIPTION Q32 Reverse Flow Operations LOCATIONOF RELEASE Q 80 80 80 80 7

8 8

9 11 12 LOSS OF OR DAMAGETO FACILITYQ43 TYPE

DESCRIPTION

Z Q42 NA 9

10 PUBLICITY ISSUED DESCRIPTION ~46 unO4" NA 9

10 NAME oF PREPARER D. K. tlacVitt'8 69 NRC USE ONLY 80 80 ss s

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~ >j 7'IAGARA U MOHAWK

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NIAGARAMOHAWKPOWER CORPORATION/300 ERIE BOULEVARDWEST, SYRACUSE, N.Y. 13202/TELEPHONE (315) 474-1511 3'amuuty 13, 1978 A,. Boyce H.

Gtu.e/L

'Pi/Le&o/L UnLted Statee NucLeut, ReguLato/I.y CommQhion Region I 631 Pmk Avenue King o) PtuL5h~,

PA.

19406 RE:

gocket No. 50-220 LER 78-01/04 T-0 Nine ILiLe Point NucLeuL S~n Ueif: <1 OeatL ~. G/Iie/L:

Section 2.1.5 of Che Env~onm~ TechnicaL Specipcatioru

/I.equi/I.u

~ We t Tempemtu/1e of ou/L di5chatIge wate/L Co Che Lake. noC exceed 50 F

Wo hocus a$Can. gow />eve/uaL and Che/Lea(ke/c.

Con~y Co ~,

on Janus/Ly 4, 1978, We 50 F /tT wa5 exceeded by vaLues o( 0.5oF Co 2.6 F

durung We pened Wo Ch/Lough six hou/L5 a)ke/L (Low /Ieve/L5aL.

On Jmuuvcy 3, 1978 at 2305 bouts, Che gow o( Che circcuLating wat wae /Leve/ued Co co/I/sect icing in We ~ke ~neL.

Opercatcng P/LocedIdte, Nl-OP-19, Ci/IcuLMing olate/L Sgfem, wa5 used (o/L CRQ opeJMian and (oLLowed without excep~n.

Howeve/L, Gate "C", We ci/LcuLating wate/L dQduI/Lge gat'e, Co Che di5charcge

~neL, (cuLed W cLoae compLeteLy.

TRQ gate,L s no/ImaLLy open, smpended ove/L We dieduucge ~neL.

The, d/u,vying fo/Lce

$o/L 0Loaing Che gate. i5 aoLeLy the weight o( the gate,.

High )Low (o/Lcing We gate again54 M'a guideL5 a pomibLe c~e o( Chi5

$~e:

A5 a, /Le5uLt o) Chih (aiLu/Le Co cLoae compLeteLy, arne% amounts o$ mvIm dQ cd/Ige wate/L we/I.e +Mowed Co mix with We coLd ~ke wate/L /Iai5ing We Cempe/~e o) We wate/L at the ~et to We conduce/L.

TkQ, in ~n, wa5 heated in We condense/t.

and cKscho/aged W We Lake at a g/Leat4, LT

~ aLLowed.

The (oLLoeing a T'6 we/ce /Leco/Lded:

~

~

40

~

~

"LER 78-01/04 T-0 0)

T7h)E LAKE T (oF) 87SCHARGE T (oF) 'T (oF) 2900 2400 0100 0200 0900 0400 0500 32 92 32 92 92 92 92 97.0 90.0 82.8 82.5

89. 9

83. 8 84.6 65 58 50.8'0. 5>>

51. 9"

51. 8" 52.6" V~~n o g E.T.S.

2. 1. 5 FLoN cvae atoned Co nominal at 0525 ho~,

on Jan~a 4,

1978.

TM Lncident m cowMned Co have muumuu knpact due, to Ae dhoM

~e o$ du~on and We xmas hT'a above, speci Pcationj.

The )~e o$

gate "C" Co cLoae completely vial be LnvebWgated dutung Ae net Ae(using 0Ltag e.

~cMeZy, u'homas E.

Lempgee General Superuntendent Nu&euc Gen~mn Joe R.R. Schneide/c Vace Prcu&ent-ELe~c Pcodu~on

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