05000220/LER-1978-003, Regarding Drywell High Pressure Switch RE04A Setpoint Drift and LER 78-003-00

Regarding Drywell High Pressure Switch RE04A Setpoint Drift and LER 78-003-00

ML18018B122
Person / Time
Site:	Nine Mile Point
Issue date:	01/31/1978
From:	Schneider R Niagara Mohawk Power Corp
To:	Grier B NRC Region 1
References
LER 78-002-00, LER 78-003-00
Download: ML18018B122 (8)

LER-1978-003, Regarding Drywell High Pressure Switch RE04A Setpoint Drift and LER 78-003-00

Event date:
Report date:
2201978003R00 - NRC Website

text

-0 REGULATORY INFORMATION DISTRIBUTION SYSTEN

<RIDS)

DISTRIBUTION FOR INCQNING NATERIAL 50-220 REC:

GRIER B

H NRC ORG:

SCHNEIDER R

R NIAGARA NOHAMK PMR DOCDATE: 01/31/78 DATE RCVD: 02f06/78 DOCTYPE:

LETTER NOTARIZED: 5O COPIES RECEIVED

SUBJECT:

LTR 1

ENCL 1

l.

LICENSEE EVENT REPORT 78-02 ON 1/6/78 CONCERNING SETPOINT DRIFT RE Nl-ISP RE04.

2.

LICENSEE EVENT REPORT 78-03 ON 1/6/78 CONCERNING SETPOINT DRIFT RE RE04A.

PLANT NAME: NINE NILE PT UNIT 1

REVIEWER INITIAL:

XEF DISTRIBUTOR INITIAL; DISTRIBUT1ON OF THIS NATERIAL IS AS FOLLOWS'44++<++<<<+<<<<+<+

INCIDENT REPORTS (DISTRIBUTION CQDE A002>

FOR ACTION:

INTERNAL:

EXTERNAL:

BRANCH CHIEF LEAR++M/4 ENCL EG FIL

+W/ENCL I 5 E4+W/2 FNCL SCHROEDER/IPPQLITO++W/ENCL NOVAK/CHECKS< W/ENCL KNIGHT++M/ENCL HANAUER++W/ENCL EISENHUT++W/ENCL SHAG~+M/ENCL KREGER/J.

COLLINS+>M/ENCL L.

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NIAGARAMOHAWKPOY/ER CORPORATION/300 LRIE BOULEVARDWEST. SYRACUSE. N.Y. 13202/TELEPHONE (315) 474-1511 Janua/Ly 31, 1978 JIk.

Boyce, H.

G/Li.e/L NAe&otc

'UI~ed S~e5 NucLea/L Reguj'+to/Ly Commission Region I 631 Parcfz Avenue, Km'( P~b~,

PA.

19406 RE:

Sock& No. 50-220 8ea/L N..

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" In accordance 1~ Nme h4Xe 'Poli< NucLea/L S~on UIM'??1 Technical'. Speci pc~one, I0e hetce6y au6~ Licensee Eve+4'epo~

LER 78-02 and LER 78-03, efu.ch arse in violin og 7echnicaZ Sperm.Pc~on

3. tl.2.

These /1.epo~

use/I.e complied in She (o/UIIaf: de5~gnMed in NL?REG-Olbl, dMed JuLy 1977.

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C6NTROL BLOCK:

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9 LICENSEE CODE 14 15 LICENSE NUMBER CON'T 0

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8 60 61 DOCKET NUMBER GB G9 EVENT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES QIO

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Q34 1

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1 Q4~Qs 25 26 LICENSE TYPE 30 57 CAT 58 8

QB0 1

3 QG 74 75 REPORT DATE 80

RE04, found RE04A with a setpoint of 3. 30 psi, RE04B at 3. 30 si, and RE04C at 3.40 PSI.

Required setpoint of these dr well hi h

ressure switches is 3.50 psi +/- 0.053 psi. This condition resulted in minimal safety implications. All switches drifted in a more conservative

~07 direction.

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CAUSE

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CODE TYPE NO.

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~0 21 22 23 24 2G 27 28 29 30 31 32 ACTION.FUTURE EFFECT SHUTDOWN ATTACHhIENT NPRD 4 PRIh'IE COhIP.

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These chan es in set oints ex erienced on the Barton Model 289 ressure indicatin switches were due to instrument drift. RE04A va r

3.50 psi, RE04B at 3.50 si, and RE04C at 3.50 si. Current 3

survei 1 1 ance testin schedules are ade uate to i ns ure earl detection of future instrument drifts.

7 8

9 FACILITY STATUS BI POWER OTHER STATUS Q E

Qss ~09 9

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10 12 13 44 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQB Q>>

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10 11 44 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q30

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0 METHOD OF DISCOVER Y DISCOVERY DESCRIPTION Q32

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U~ NUCLSAR R8OULATOR MISSION NRC FQRM 196 I2 78)

NRC OISTRlBUllON FOR PART 50 DOCKET MATERlAt.

OQCXST NUMSSR

~- ZZN FII 8 NVMSSR

~cri4o TO:

Mr. Boyce H

Grier FROM:

Niagara Mohawk Pwr.

Corp

Syracuse, New York Thomas ED Lem ges OATS QF OOCUMSNT 1/13/78

'AT8 RSCSIVSO 1/24/78 LKTTSR ABORIGINAL SCOPY QSSCRIPTION QNOTORIZSO JjVRCLASSIFi8O PRCF'NPUT FORM 8NCI,OSU RIL NUQSSR OF CQPISS RSCSIVSO

/ CC-Licensee Event Rept'RO 50-220/78-01) on Ol/04/78 concerning delta temperature of the discharge water exceeding spec 2' '

of the environ+ tech, specsi

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COPIES NOT SUBIIITTED PER REGULATORY GUIDE 10.1 (1-P)

PLANT'NA?IE: Nine Mile Point Unit No.

1 RJL 1/24/78 (1-P)+(2-P)

FOR ACTION/INFORMATION Ei VIRONi4ENTAL F:

PRO JECT !IIANAGER:

LIC. ASST:

ASSIGN AD'RANCH CHIEF:

8.

EARLESS INTERNALOISTRIBUTION YSTENS SiT SAFETY 6 EIiRON ANALYSiS DENTON Q 'NILLER GO CK C STAFF ON TECH

'IOSS OVAK "CH ijL 2

SZTOCZY CHECK L <Wo V

L.'KR vS TS EXTERNALOISTRIBUTIGN CONTROL NUMBER TTC at G 7

<J. P>ICKTT) 1 Cv SpiPi.

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