ML20086L140

Telecopy AOs 73-22,73-25 & 73-24:on 731115-16,setpoint Drift Found on Instruments LITS-2-3-73A,PS-2-2-3-49A & PS-2-2-3-50A.Cause Under Investigation.Instruments Recalibr

ML20086L140
Person / Time
Site:	Peach Bottom
Issue date:	11/16/1973
From:	Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
73-23, 73-24, AO-73-22, AO-73-24, AO-73-25, NUDOCS 8402070412
Download: ML20086L140 (1)

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• P11IIADI1PHIA EL!r7RIC COMPAlil' 1 Pench bottos Atocic Power Station '

Deltr., Pennsylvanin A,0 7Jp,q, 17314 7g/ g 3 73 /# '/  !

!!ove:ber 16, 1973 }

Mr. James P. O'Reilly, Direct or United States Atomic Energy Co.c-ionion Directorate of Regulatory Operationa 631 Park Avenue If King of Prussia, Penncylvania 19406 {

Subject:

Abnorm 1 Occurrence PbHe'ur liotifiention Confiming our telephone convernation with Mr. k'elter Ihrtin, A.E.C. j Region I Regulatory Office on llovember 17, 1973 r f

Reference:

License liueber DPR-44, Aaendnent !! umber 1, I Technical Specification Table 3 2.B Darveillance tects perfomed on 1;ovember Ic, and liovecher 16 identified 3 netpoint drifts on instmsents associated with the EHR loop celection  ;

circuitry and eld 1 containment spray pcmiccive circuitry. The following i data was obtained: l Inst rur ent As Found T. S. Limit I l

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P5/.t.4 LITS-2-3-73A 303.4" above vessel bottom > 312.0" above vessel bottom

t. 5 PS-2-2 2A 9A 879 psig 7933 psig

2. Y PS-2-2-3-50A 853 poig 7933 psig Tne above instrumento have been recalibrated to the desired setpoints.

Invectigation into the cause of drift continues. More frecuent tests vill be perfomed on the precir.tre switches until concictent readings are obtained. The above cetpoint chifts would not have caused the acsociated circuitry to malfunction. lio safety icplications are sesociated with this occurrence.

f$$T W. T. Ullrich, Superintendent Peach Bottom Atomic Power Station.

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\ g 8402070412 731116 PDR ADOCK 05000277 S PDR

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Form AIC-94 IIter. Sf as 14.1949 AIOf 0240 Note aae retura. For signatore.

V For laforma'8ea.

TO (Nan e and unit) Imt ALs atMAnns RO Chief, FS6EB PilILADELPilIA ELECTRIC COMPANY RO:llQ (5)

RO Files DATE PEACll BOTTOM 2 DN-50-277 Central Mail & Files g Reculatorv Standards (3) AO # 73/22, 73/23, 73/74 TO (Name and unit) imarlALs n[MAnns Directorate of The above abnormal occurrcn ce is forwarded Licensing (13)

OGC Due for information. Distribution will be made Regional Directors (R0 II , III, IV)

TD (Name and unit) by this office to the PDR, Local PDR, NSIC, INiilALS REMARKS DTIE, and State Representatives.

DATE F RotA mejnd unit) a[ MARK $ .

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. J. Brunner Region I .

POEPG Daft 8-337-1246 11/29/73 054 OTHER 51DE FOR ADDITIONAL REMAf:KS E Gro; tett o . e43-est

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