ML20086K600
| ML20086K600 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 11/14/1974 |
| From: | Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20086K598 | List: |
| References | |
| AO-74-51, NUDOCS 8401270344 | |
| Download: ML20086K600 (1) | |
Text
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17314
!!ovenber 14, 1974 Mr. Jnaca P. O'Reilly, Director United Stat u Atomic Energy Co.::21ooton Directorate 01 Rey,ulatory Operationa 631 l' ark Avenue King of Pruccia, Pennnylvania 19405
Dear !!r. O'Reilly:
Subj ent: Anortn1 Occurrence 24_-J!our Untification Confir:In;; U. T. U11 rich's phone convernation with Mr. l' alt T,aunack, A.F.C. Penen 1 Regulatory Operations Office on Uuvecher 14, 1974.
Refcrenec: License Nucher DPR-44, Ancudacnt Nu,ber 1 Technical Specification Tcble 3.2.A Ecport No.:
50-277-74-51 Report Date:
No-nbcr 14, 1974 Occurrenca Date:
How uber 13, 1974 Tacility:
Peach 14tto a Ate 2ic Pcuer Statien R.D.1,. elta, Pcnnuylvania 17314 n
4 Identification of Occurrence:
Setpaint r.hif t on ECCS Hi Dryall Preuuure initiation critch PS-2-10-101A.
Conditionu Prior to Occurrence:
i Unit 2 at 90: pouer.
Dencrip:lon of Occurrence:
Daring routine inr,trum at r,urveillance testint;, thic cuitch van found to trf p at 2.18 poig. The Technical Specifiention li it io leco than or equal to 2 ps!r,.
Deuff. nation of Apparent Cauce of Occurrenec:
Sctroint shift, t ripped repeatedly near the an found cetpoint.
&calysia of Occurrutec:
Since the netpoint chif t van only niic,ht on;l thin r.uitch operates in a one-out-of-two twice logic, the safety icplicationa of this occurrence are eini a1.
Corrective Action:
The switch uan checked to deternine the cauce of the setroint chif t.
Sa specific cauce was identified.
The cultch van recet to a value within the Tech.11 cal Spec 111 cation linitn, i:etpoint checked ur,ing the nppropriate curveillance t er>t,
and returned to service.
Tailure Data:
I;a previous iciluren of thin type for thin type and range of cuitch.
Very trulv yourr.,
e401270344 741123 PDR ADOCK 05000277
/,/C <'c'P..,-(
S PDR U. T. Ullrich, Surarintendent Peach letto:: Ato :ic Power Station