ML20084S942

Telecopy Ao:During Review of Refueling Surveillance Calibr Sheets,Pressurizer Pressure Sensors PT-0102 Were Noted to Have Drifted Down.Vendors Recommendations Sought

ML20084S942
Person / Time
Site:	Palisades
Issue date:	04/16/1974
From:	Dewitt R CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	Jordan E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20084S940	List: ML20084S939 ML20084S942
References
NUDOCS 8306200301
Download: ML20084S942 (3)

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.}J . l ATOMIC ENERGY COMMISSION DIRECTOR ATE OF REGULATORY OPER ATIONS

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1. '81f $ '**- 799 ROOSEVELT ROAD ygtgpgoug GLEN ELLYN, ILLINOIS Go137 (312)858-2660 i

l A. RO Inspection Report No.

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E 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) RO Files R0 Files B. RO Inquiry Report No.

Transmittal Date  :

Distribution: Distribution:

R0 Chief, FS&EB RO Chief, FS&EB -

RO:HQ (5) RO:HQ DR Central Files DR Central Files Regulatory Standards (3) RO Files Licensing (13)

RO Files =

l C. Incident Notification From: Consumers Power Co. Docket No. 50-255 (Licensee & Docket No. (or Licensa No.)

Transmittal Date  : April 24, 1974 -

Distribution: Distribution:

.R0_ Chief d S&ER_ R0 Chief, FS&EB RO:HQ (4) RO:HQ (4)

Licensing (4) L:D/D for Fuels & Materials

. DR Central Files DR Central Files -

RO Files RO Files

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1. . .7. i (. '1 VEB277(1320)(1-019900A106)PD 04/16/74 1316 TLX CONSPOWER JKN ZCZC 005 JACKSON MICHIG AN 4-16-74 PMS MR ED JORDAN . aw m. - . ~ .u n '; . .

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REGION III j '

799 ROOSEVELT ROADate did_Ll-l ll OD8 ul_iC,_[$b Syd7-~ khd GLENELLYN,ILh4h.:of t k r[ libI- Oc0 or B'f } ;3,

-- ---~~~~~~A X WHILE REVIEWING THE REFUELING SURVEILLANCE CALIbHATION SnEETS IT WAS NOTED THE PRESSURIZER PRESSURE SENSORS PT-0102 HAD DHIFIED DOWh

-INDICATING ION . THIS CAUSED A MORE CONSERVATIVE SETTING Oh PRES-SURIZER HIGH PRESSURE TRIP PA-0102H buT A LESS C0hSERVATI',E SETIING l ON SAFETY IhJECTION SIGNAL PIC-0102LL. InE LARGEST SENS0rt DHIFT WAS l PSI - TWO PERCENT. SYSTEM SETTIhGS HAD bEEN ESTABLISHED ASSUMING r-f ,,,, , ggQ3 j >

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A FIVE PSI .5 PERCENT DRIFT AS SPECIFIED BY THE VENDOR. THUS TWO

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CHANNELS C AND D WERE FOUND l'i PSI: LOWER 'THAN REQUIRED TECH SPEC '

SETTINGS AS LISTED IN 3.16.1.2. AND CHANNEL A W AS S PSI LOW.

SINCE THESE PHESSURE TRANSMITTERS WEHE SPECIALLY MODIFIED BY (HE VENDOR TO WITHSTAND MHA CONDITIONS, VENDOHS HECOMMENDATIONS ARE BEING SOUGHT.

R B DE WITT CONSUMERS POWER COMPANY PALISADES PLANT ALL DBW IIM l

NNNN SP-1201 4 R$ 99) t

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