ML20086L527
| ML20086L527 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 03/18/1974 |
| From: | Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20086L524 | List: |
| References | |
| AO-74-10, NUDOCS 8402080295 | |
| Download: ML20086L527 (1) | |
Text
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7 .M# '
lhrch 18, 3974
, N h' y.r. Jaucc.P, O' 33y, Director
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(d' thited Sintes Atozie. Energy Comission Nectornte of Regu3ntory Operationc 631 Park Avenue I j Eing of Pruccias Penncyltarsia 19406 ,
i D.M eet: Abnorm 1 Occurrence P'4-Hour liotification 7 }
{ Confirc.ing Mr. F.leicchtrom's convercation with Mr. E. Erunner, 4.E.C, j Region 1 Regalatory Operntions Office on )hrch 17s 1974.
! Referencta 1.icence llun.bor DTR 44, /cenhent ) tup.ber 1, Technical Specification hble 3 2. A 1 !. Report lio.: hD-277-74-10
[ Import. Dat e: Ihrch 18,19'?4
- Occurrence Dste: ihrch 16s 1974
$ hel)ity: Pooch Botton- Atomic Power Station - Unit 2 i R. D. 1 5Deita Pennr.ylvania s 17314 1
i .:
1 P 3dentifiention of Occurrence
$ Betpoint chirt a on PS 2-2-3-1340 and P5-2-2-3-134D which isolates
- i. the nnin nican 31nec if preware drops btaov 850 psig when in the run rode.
k l ConSitiona Prior to Occurrence:
},
Plant stable at upproxinntely 3DW pover.
[ Dr.ccription of Occurrence: -
{ Daring inctrur.ent curveiDance tentingc PS 2-2-3-1340 an$ PS-2-2-3-134D 1 trippu6 e oppro.xir.ately Sh pcic and 847 pcis rerpective)y inr, ten 6 of l J. 650 prig en specified in the ' loch,Speen.
1 i Designation of Apy.orent Cause of Coeurrenco:
j Innbility of evitch to hold precice netpoints.
[ halysis of Occurrences l Setpoint chift of the nubject mediches vou'Jd not Inve defeated the
{ logic to proGuce the required actionc. 'The operable witches in
! cach channe) vou)61mve caused trips r,t the proper seipuints.
{ Seipoint chifte vere ninor enn have no safety inp'Jications.
F Corrective Actioni i } 'the onlibration was che:heS. netpoint recet and checked 5n accordu.ce
[ vith the curveinance tect. The remaining cvitches in this logic were.
r checked ned found to b./ vithin the Tech Spec lititc.
! )
l Pnilure Datn:
Setpoint chift c hrrvo occurred on this type of cecitch in other opp'lientionc.
fi'W8U b'. 7. UDrich. Daperintendent f
I i Peneb Botto: Aton.ic Power Station i .t j
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