ML20086F911
| ML20086F911 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 11/10/1975 |
| From: | Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20086F909 | List: |
| References | |
| AO-75-71, NUDOCS 8401090656 | |
| Download: ML20086F911 (1) | |
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Pench Botton Atomic Power Station PHILADELPUTA UI.ECTH IC: C0!! PANT Del t a,. Penn sylvaninc.'
=s 17314 November 10 1975 Mr James F.
O'Reilly, Director Office of Inspection and Enforcement g
. Reg,lon 1-e
, United Gtaten Nuclear Recu-latory Con =iscion.
g g h y g,/,2., ' g
- 631 Park Avenue l, King of Prunnia,. Pennsylvania 19h06
- .Gub$cetg A h n o r r.n l Occurrence PL-Hour Tio t i fi c at ion C 'iConfirning.V.
T. Ullrich't phone cenversation with Mr. Jim Portlov.
5' I.Re n.cibni-i,' Unit %. T Ut at i!s t'urd e rftMe guf ht~c.r'p=comm Inci=on7 en" Ir/_07 75.,
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Reference:
Licence Number DPH leh
... a,cm
.._a Technien1 Specification
Reference:
3.5.A.4
' TE UDYt-~nd.. :
- 70:277 75 4 r3;;. -- "-
- RoTRrt Evenunc. !!nte :
pove=.ber C-2f 1975 _
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Identification of Occurrench:
Cruched veld on line' to.RV-353.(1 inch pipe) i
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Conditions Prior to Occurrence:
gf..x.* Resetor shutdova..and,depree;surized. /;. Reactor _,hhad renay.ed, and RUR
..-..D,5.lb?b3.bVdC, dot':C3:oolinctnzeperatio:
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Description. of Occurrence r
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While "B" RER loop water. leak.vas. observed inwas operating:in the shutdown cooling mode,.c the vicinity of the MO-2-10-154B valve.
Designction..of Apparent Caute of Occurrence:
j D ec e.un e the HHR cysten vac operatinC in the shutdown cooling mode
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with lov heat. loads.it
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vac necennary to throttle down on MO-2-10-15 A B.,3,'.Thir. vibration apparently caused the 9
failure.
tAnalysis of occurrence:
The safety inplientions I
1cotage did not.
of this occurrence are minimal because.the represent signifteant impairment of the RHR ryston's ability to deliver decicn flov.
Y.i. quid. e f fluent from the leak van j
safely contained to the innedict e area in the torus room.
L'eak occurred externel.to the isolation valves.
Corrective. Action:
Pipe. vibrntion readings vill be.tehen to-determine if modifications nre recuIred in o er have b6cn complethd.nting procedures or in pipe supports. Repairs Failure mata.:
None.
t-5.Very truly yours, l
[ 7 ' M ' 2 7. 8 2
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, V. T. Ullrich, Superintendent Peach. Botton Ator-ic Power Stat-lon-
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8401090656 751117 PDR ADOCK 05000277 S
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