ML18018B253

LER 78-029-00 for Nine Mile Point, Unit 2, Regarding Discovery of High Drywell Pressure Switches RE04A, RE04B, and RE04C with Setpoints Less Conservative than the Technical Specifications

ML18018B253
Person / Time
Site:	Nine Mile Point
Issue date:	07/28/1978
From:	Schneider R Niagara Mohawk Power Corp
To:	Grier B NRC Region 1
References
LER 78-029-00
Download: ML18018B253 (6)

Text

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS>

DISTRIBUTION FOR INCOMING MATERIAL 50-220 REC: GRIER B H ORG: SCHNEIDER R R DOCDATE: 07/28/78 NRC NIAGARA MOHAWK PWR DATE RCVD: 08/02/78 LETTER NOTARIZED: NO COPIES RECEIVED 'O

SUBJECT:

LTR 1 ENCL 1 FORWARDING LICENSEE EVENT REPT (RO 50 -220/78-029> ON 07/22/78 CONCERNING PERFORMANCE OF SURVEII LANCE TEST Ni-ISP-REO4, FOUND RE04A, REO4B 5 REO4C WITH SETPOlNTS LESS CON ERVATlVF THAN ALLOWED BY TS 3. 6. 2 RESULTING IN BOTH SENSORS IN CHANNEL 11 OPERATING IW > OC6ab b~

PLANT NAME: NINE MILE PT UNIT 1 REVIEWER INITIAL: XJM DISTRIBUTOR INITIAL:

DISTRIBUTION OF THIS MATERIAL IS AS FOLLOWS INCIDENT REPORTS (DISTRIBUTION CODE A002>

FOR ACTION: IEF ORBQ3 BC++W/4 ENCL INTERNAL: G F n~~W/ENCL NRC PDR+>W/ENCL 4~4~W/2 FNCL MIPC~~W/3 ENCL I 5 C SYSTEMS BRN4W/ENCL EMERGENCY PLAN BR+>W/ENCL NOVAK/CHECK+4~W/ENCL EEB<4W/ENCL AD FOR ENG~~W/ENCL PLANT SYSTEMS BR++W/ENCL I <ANAUER4H~W/ENCL AD FOR PLANT SYSTEMS+<W/ENCL AD FOR SYS 8. PROJ++W/ENCL REACTOR SAFETY BR++W/ENCL ENGINEERING BR+lcW/ENCL VOLLMER/BUNCH>4W/ENCL KREGER/J. COLLINS~I +W/ENCL POWER SYS BR>wW/ENCL l SEYFR IT/IE4t+W/ENCL EXTERNAL: LPDR S OSWEGO NY~~W/ENCL T I Cr I L Z CARTER<F+W/ENCL NS I C4~4l W/ENCL ACRS CAT B44W/16 ENCL DISTRIBUTION: LTR 45 ENCI 45 CONTROL NBR: 782160002 SIZE: i P+1P

%05%8l%% kf+%%%%%%%%%%%8I+sl+%4 %%%%%%%%%% THE END

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J 'O'a h ~ A~>i 4I'1'J(lit( NAP-0179 NIAGARA MOHAWK POWER CORPORATION/300 ERIE BOULEVARD WEST, SYRACUSE, N.Y. 13202/TELEPHONE (315) 474-1511 JuLg 28, 1978 JO.. BoIJce H. G/hie/h Mn,ecto/h United Saba.te5 NueLea/h ReguLato~ ComIIhiwion Region I 631 Pa/hfdf Avenue G'.ng of P/hL5aka, PA. 19406 RE: Socket No. 50-220 Sea/h N,. G/hie/h:

7n aceo/hdance Io&h. Nine I%Le Point NueLea/h Stat'ion UnLt <1 TechnicaL Speri.f~athons, hIIe he/heby submit: Licensee Event Repo/ht, LER 78-29 h0fu.eIhke in vioLation of Section 9.6.2 o( We TechnicaL S peei peatLom.

Thee /hepotu." hIIa5 eompLst'ed in We (o/Imat designated in NUREG-0161, dated July 1977.

SLITce/heLcJ >

Original Signed by R.R. Schneider R. R. schneide/h Vice P/he5ident-ELect/hic Production Attachments (9 copie5 eaCh) xc- Ome&o/h, OtIlIme o( USE (90 copLe5)

Oi/hecto/h, 0)pce o( MIPC (5 eopie5) g$

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782ie0002 w'~(

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NIAGARA MOHAWK POWER CORPORATION/300 ERIE BOULEVARO WEST, SYRACUSE, N.Y. 13202/TELEPHONE (315) 474-151 I July 28, 1978 N,. Boyce. H. Gme/t.

NJLe&o/L Unapt'ed S~e5 NucLea/t. Reg~/ty ConIInQamn Region I 631 Pa/I.t Avenue King otI Prus.sin, PA. 19406 RE: Pocket No. 50-220 LER 78-029/01T-O Sea/L hk. Gru.e/Lt Gutting no/tIIIaL ope/talion, pe/L(o/tance o( Su/LveiLLance Test Nl-ISP-RE04, found RE04A eLtk a, aetpo~ o$ 3.80 pe~, RE04B tttith a aetpo~ of 3.70 ps~,

and RE04C eith a, aetpo~ o) 3.80 ps~. Thee con~n /Le5uLted ~n 4uzee o$ fom 8~k 0/utweLL P/Lesau/Le Stttitches having ae.tpoket vaLues Zeta'o<Me/t; vive .than Noae. aLLowed by TechmcaL Speci.+cation 3.6. 2. TechnicaL Speci;

+cation 3.6.2 aLLowa 3.5 ~~ +/- 0.053 prig.

ALL .th/Lee s~che5 tume, zeset Co eMun aLLotuabLe Kin~ and /L&e54ed.

Cu/t/Lent SmveiXLance Ces~g acheduLes a/I.e adequate ~o <Iuu/te euLy detec.~n o( Chere ~~ent d/Li(A. In ad~on, tue. me penn.ing .to cage out Ntese.

Ba/tton htodeL 289 p/Le/s/sme Lndi~ng atttitchee duning om next ate(ueLing outage and /LepLace Ct.em tttifh a GE anaLog ~e~e/L Nu.p /sy/.ten.

TkQ con~n Nd,nok p/Lenient an umesoLved aa/0etg quukion and had mirumaL 6a/uetty knpN ~oru .

ve/Ly .t/tuft you/a, ORIGINAL SIGNED BY R.R. SCHNEIDER R.R. Schne,ide/t.

Vi ce Paeh&ent-EZecVu'.c Pcoduc.tion GKhf/Inttn

{7.77)

~O CONTROL BLOCK:

N Y N M P I

1 Q20 0 LICENSEE EVENT REPORT 6

0 QI 0 0 0 0 0 0 0'4 t

(PLEASE PRINT OR TYPE AI.L REQUIRED INFORMATION) 1 I I I Ag v~ W 7 8 9 LICENSEE CODE 14 15 NUMBER 25 26 LICENSE TYPE 30 0'~0'ICENSE 57 CAT 58 CON'T

~01 7 8 soURcE ~LQB 60 61 0 5 0 0 0 DOCKET NUMBER 2 2 0 GB Q 69 EVENT DATE 74 Qs 75 REPORT DATE 80 Qs EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10 Durin normal o eration erformance of Surveillance Test Nl-ISP-RE04

~0 3 found RE04A; RE04B, and RE04C with set oints less conservative than

~o 4 allowed b TS 3.6.2. This condition resulted in both sensors in

~o s Channel 11 o eratin in a de raded mode. This condition, however,

~o 6 does not create an unreviewed safet uestion and has minimal safet

~o 7 im lications ~

~os 80 7 8 9 SYSTEhl CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUBCOOE SUBCODE

~IB 10 0>> E 0>> LEJO~~

'13 I N S T R 0 18 04 LSJS MZ0' 19 20 7 8 11 12 SEQUENTIAL OCCURRENCE REPORT REVISION 017 LERIRO REPORT ACTION . FUTURE EVENT YEAR

~78 21 22 EFFECT

~

23 SHUTDOWN

~08 24 REPORT NO.

8 26

~w 27

~01 28 ATTACHMENT CODE 29 NPRD.4 TYPE

~T 30 PRIME COMP.

31 NO.

LJ0 32 COMPONENT TAKEN ACTION ON PLANT METHOD HOURS O22 SUBMITTED FORM SUB. SUPPLIER MANUFACTI'RER L~JQIB L~JO ~ZQ2o LQQ21 0 0 0 2 Y Q23 ~YQ24 ~NQ25 B 0 8 0 Q2~

33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 o The hi h dr well ressure switches involved are Barton Model 289 res-sure indicatin switches. The chan es in set oint exoerienced were due to instrument dri ft. RE04A and B were reset to 3. 50 PSIG ~ and 3 RE04C to 3.48 PSIG. Current surveillance testin sc edul es are 4 ade uate to insure earl detection of future instrument drifts.

7 8 9 80 FACILITY STATUS '4 POWER OTHER STATUS Q METIIOO OF DISCOVERY DISCOVERY DESCRIPTION Q32 CK 7 8 9 E 0>> L0O~~)0>>

'IO 12 13 44

~BQ 45 46 Survei 1 1 ance Testing 80 ACTIVITY CONTENT RELEASED OF RELEASE Ah'IOUNT OF ACTIVITYQB LOCATION OF RELEASE Q ZZ~Zg 7 8 9 10 ZQ NA 44 45 80 PE'RSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39

~00 0 0>> Z 038 NA 80 7 8 9 11 12 13 PERSONNEI. INBURIES NUMBER OESCRIPTIONQ 8

~00 0 Qo NA 80 7 9 11 12 LOSS OF OR DAMAGE TO FACILITY TYPE DESCRIPTION Q 9 Z Q42 NA 7 8 9 10 80 P U 8 LIC ITY NRC USE ONLY ISSUED DESCRIPTION Q"

~2O ~NQ44 NA R9 r

8 9 10 GB 69

~.

NA'iViE OF PREPARER Aa I'Ivv 2 I Qv le PHONE 31 Q