ML20086G448
| ML20086G448 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 07/21/1975 |
| From: | Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| AO-50-277-75-54, AO-50-278-75-44, NUDOCS 8401110461 | |
| Download: ML20086G448 (1) | |
Text
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Pleischennn'n phone c onve r n rat i o n with Mr. Ton Shedlour.hy, Hegion 1,
United States NucJenr H e Cu.11.t o r y C onta i n s i on on Ju)y 21, 197'i.
Hoferenre:
Li c e. n r.c Numbern DNt !. I4 cnd DPD-50' Technjeu) Greci fienti on TM f e r e n e.v :
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50-277r 7 S-bl cani 50-27BM S-oh Heport lu.t e :
July Pl. 1975 O c e n t re n t. o D :te : July 20, 1975 Pncility:
Peach Botton Atomic Pover Station.
H.D.
1, Deltr., Pe n u riyl va n i rt 17334 I d e n t i fi e r.t i o n of Gerurrence:
Pni]ure of stach TJ ov t ri.n cre.i tte rn.
Cond3tionn Prior to Occurrenec:
Hoth unito at tpproximately 50% pover.
De t. c r i p t i on of Occurrence:
On the evening of July 20, 1975, 3fchtning,npparently struck the unin l
offcnn rtech, renulting in dor:nce-to both offcnn utnch flow trannnitterr.
Den 3cuntion of Apparent Cnune of Occurrence:
Lightnir.c ntrike.
A n n ly c i r.
of Occurrenec:
Plow r e.t e up the unin.offcnn stach during n o ru rti operution is provided by dilution fann.
Tuo dilution funu vere in service prior to the 31ghtning ntrike cud reunined lu.nervice during the entire period that the flov trononitteru ucre out of cervice.
Therefore, total o f fG ra n utnch f) ou in huovn.
This pernitn.ar-necurate deternint. tion of total cancouc relenne during this period.
Thiu occurrence hac li'ttle unfety f' nignif3cance.
Corrective Action:
An incpection in the aren below the nnin utnch,ue.n perforned immediately.
rollovin;; the failure.
Depnir oport.tions to the electronier, vere i n i t i ra t e d.
One of the two flov trnnnuittern var,r, turned to nervice.
Unpuir of the cecond trnnt.nitter 10 avnitinc.repinccment partn.
PnJ1ure Datn P r e v i o u r. failuren of thin type were reported nn 50-277-75-51 and 50-270-75-38.
Very tru)y yourn, f,..
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t> 11 r i c h, Guperintendent Peach Dotto::: Atonic Power Station u,
8401110461 750721 1
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