ML18018B270

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)

Text

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS>

DISTRIBUTION FOR INCOMING MATERIAL 50-220 REC: GRIER B H ORG: LEMPGES T E DOCDATE: Oi/i3/78.

NRC NlAGARA MOHAWK PWR DATE RCVD: 04/i4/78 DOCTYPE: LETTER NOTARIZED: NO COPIES RECEIVED

SUBJECT:

FORWARDING I ICENSE - EVENT REPT (RO 50-220/78-00i > ON oi/04/78 CONCERNING LTR i ENCI i 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 REVIEWER INITIAL: X JM DISTRIBUTOR INITIAL:

DISTRIBUTION OF THIS MATERIAL IS AS FOLLOWS LER (BACKFIT)

(DISTRIBUTION CODE M007>

.,1NTERNAL: G FIL ~~~~W/ENCL NRC PDR~~~W/ENCL 1 E~A~W/2 ENCL EXTERNAL: LPDR S OSWEGO'Y++W/ENCL THM>c>W/ENCI c-z Z C'H4~E ACRS CAT 8~HI W/0 ENCL

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I q <CCugTX,,- I MYNIAGARA M ClXt'FiLE COPY WP-0109 NIAGARA MOHAWK POWER CORPORATION/300 ERIE BOULEVARD WEST, 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 rl Region I C C~i f'I C

691 Pa/cia Avenue, C

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Kmg otI Pruwm, PA. 19406 ~lb W C9 gt)

RE: Sock& No. 50-220 C=M MC Sea/L A,. Gru.e/L:

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

o$ Se~n 2.1.5 o$ We TRQ /1.epo/ct Nas complied in She $ o/Imat de5~gnatedkn NUREG-Olbl, dated July 1977.

Vefcy ~IJ you/L5,

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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 Attachments (2 eneLoau/I.e5) xc: Mcmto/L, 0(glace of NRR (17 copie5) 7s2>s'ooq~

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s NRC FORM 366 U. S. NUCLEAR REGULATORY COMMISSION (g 77) <<

IQ I LICENSE E EV EN T R EPOR CONTROL BLOCK: Qi {PLEASE PRINT OR TYPE ALL REOUIRED INFORMATION)

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N Y N N P 1 14 Q2 is 0 0 0 0 0 0 LICENSE NUMBER 25 Qs4 26 1 1 LICENSE TYPE 1 1 30 Qs~Qs 57 CAT 58 7 9 LICENSEE CODE 7

CON'T

~01 8

60 QB 61 0 5 0 0 0 DOCKET NUMBER 2 2 0 07 68 69 0 1 0 EVENT DATE 4 7 8 74 6

75 0 1 1 3

'REPORT DATE 7 8 80 0

EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10

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

~03 water exceeded speci fi cati on 2. 1 .5 o f 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 \ 80 7 8 9 SYSTEM CAUSE CAUSE COMP. VALVE COMPONENT CODE SUBCODE SUBCODE 8

CODE CODE SUBCODE

~OS 7 8

~HF 9 10 Qil ~E 11

~X 12 13 X X X X X X 18 L~JQ>s 19

~E 20 Qss SEQUENTIAL OCCURRENCE REPORT REVISION EVENT YEAR REPORT NO. CODE TYPE N Qs LF RIRO sssoss ~78 Q ~00 I Q>

27

~04 28 29 QT 30 31 32 21 22 23 24 26 ACTION .FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDR PRIME COMP. COMPONENT TAKEN ACTION ON PLANT METHOD HOURS +22 SUBMITTED FORM SUB. SUPPLIER MANUFACTURER

~OIB ~OIB ~020 '~ZQ>> 0 + QJ 023 ~t" 02 ~026 X g g 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 with the inlet water raisin the tern erature of the inlet water.

3 Gate C will be investi ated durin the next refuelin outa e to 7

4 8 9 determine wh it han s u .

80 FACILITY METHOD OF STATUS 5 POWER OTHER STATUS QSO DISCOVERY DISCOVERY DESCRIPTION Q32 E Q>> Loas6JQ>> NA ~AQ31 Reverse Flow Operations 7 8 9 10 12 13 44 45 46 80

'8 ACTIVITY CONTENT RELEASED OF RELEASE NA AMOUNT OF ACTIVITY Q LOCATION OF RELEASE Q 6 ~Z 033 ~ZQ34 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39

~l7 ~<0 0 Qss Z Qss 13 sA 80 7 8 9 11 12 PERSONNEL INJURIES 9 11 12 80 LOSS OF OR DAMAGE TO FACILITY TYPE DESCRIPTION Q43 Z Q42 NA 7 8 9 10 80 PUBLICITY NRC USE ONLY ISSUED DESCRIPTION ~46 ss unO4" NA s 8 9 10 69 80 o NAME oF PREPARER D. K. tlacVi tt

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7'IAGARA U MOHAWK NIAGARA MOHAWK POWER CORPORATION/300 ERIE BOULEVARD WEST, 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 We t Tempemtu/1e of Env~onm~

ou/L TechnicaL Specipcatioru /I.equi/I.u Wo hocus a$ Can. gow />eve/uaL and Che/Lea(ke/c. Con~y Co ~,

di5chatIge wate/L Co Che Lake. noC exceed 50 F 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:

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Page 2 "LER 78-01/04 T-0 T7h)E LAKE T (oF) 87SCHARGE T (oF) 97.0

'T 65 (oF) 2900 32 2400 92 90.0 58 0100 32 82.8 50.8'0.

0200 92 82.5 5>>

0900 92 89. 9 51. 9" 0400 92 83. 8 51. 8" 0500 92 84.6 52.6" V~~n og 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 gate o$ du~on and We xmas hT'a above, speci Pcationj. The "C" Co cLoae completely vial be LnvebWgated dutung Ae net Ae(using

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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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