ML20085F964

Ro:On 740506,review of Monthly Surveillance Test Revealed Low Steam Generator Pressure Trip Setpoint Discovered Less than Tech Spec Limit.Caused by Low Power Supply Output Voltage.Supply Replaced & Recalibr

ML20085F964
Person / Time
Site:	Palisades
Issue date:	05/06/1974
From:	Dewitt R CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	Cook R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20085F956	List: ML20085F953 ML20085F964
References
NUDOCS 8308230681
Download: ML20085F964 (3)

Text

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i l974gy _g PM 2: 34 i VEB198(l551)(1-026549AIqrgPpdpgD6(Jidp2pHm, donn ORDERSJ l TL4 CONSPOWER JKN i; phi:nCAL CELIVEF'i 7 t C W gES-AGETT, N04.DNFN .

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ATOMIC ENERGY C0kSkDN *-([ .

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_ 1 6LEN ELLYN, ILljd/3 IdN *U#1 PER THE TECH SPEC REPORTING REQUIREMENTS, THE FOLLOWING INFORMATION I6 TRANSMITTED TO YOU AS A VIOLATION OF SECTIONS - 1.4 A AND TABLE i

2.5.1, ITEM 6. 8308230681 740516 i PDR ADOCK 05000255 i S PDR j'  !. ON 5-6-74 WHILE REVIEWING THE MONTHLY SURVEILLANCE l TECH SPEC TEST MI-2, IT WAS FOUND THAT THE LOW STEAM GENERATOR PRESSURE TRIP SET POINT WAS LESS THAN THE i TECH SPEC LIMIT BY 6.2 PSIA (25 MILLIVOLTS) .

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2. INVESTIGATION REVEALED THAT THE POWER SUPPLY OUTPUT VOLTAGE I

FOR THIS UNIT WAS BELOW NORMAL.

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3. THE POWER SUPPLY WAS REPLACED WITH AN IDENTICAL SPARE AND THE SYSTEM WAS RECALIBRATED AND OPERATIONALLY CHECKED.

ALL TESTS WERE SATISFACTORY AND THE SYSTEM HAS BEEN RE- l TURNED TO SERVICE.

! i CONSUMERS POWER COMPANY PALISADES NUCLEAR PLANT R B DE WITT ALL H0 g4y [

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~y ,) DIRECTOR ATE OF REGULATORY OPER ATIONS

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k'o #'4 re s o* 799 ROOSCVELT ROAD R F:GION 111 mg GLEN ELLYN, ILL:NOIS 60137 (312) 85s.2660 l

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A. RO Inspection Report No. l Transmittal Date  :

Distribution: Distribution:

R0 Chief FS&EB R0 Chief, FS&EB RO:HQ (5) RO:HQ (4)

DR Central Files L:D/D for Fuels & Materials Regulatory Standards (3) DR Central Files Licensing (13) R0 Files R0 Files B. RO Inquiry Report No.

, Transmittal Date  :

l l Distribution: Distribution:

l R0 Chief, FS&EB R0 Chief, FS&EB l RO:HQ (5) RO:HQ l* DR Central Files DR Central Files l Regulatory Standards (3) R0 Files l

Licensing (13)

) RO Files C. Incident Notification From: Consumers Power Co. Docket No. 50-255 (Licensee & Docke.t No. (or License No.)

Transmittal Date  : June 4, 1974 Distribution: Distribution:

R0_ Chief._FS&EB R0 Chief, FS&EB RO:HQ (4) RO:HQ (4)

Licensing (4)

L:D/D for Fuels & Materials l DR Central Files DR Central Files RO Files RO Files

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