ML20086H796

Telecopy AO 75-40:on 750602,loop B RHR Inboard & Outboard Torus Cooling Valves MO-2-10-34B & MO-2-10-39 & Outboard Injection Valve MO-2-10-154B Suspected to Be Leaking Excessively.Cause Under Investigation

ML20086H796
Person / Time
Site:	Peach Bottom
Issue date:	06/02/1975
From:	Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20086H795	List: ML20086H792 ML20086H796
References
AO-75-40, NUDOCS 8401200242
Download: ML20086H796 (1)

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• 4" UniecJ Sentes Edt.Icai~RcT;ulatot'/'CoE51ssion 631 Park Avenue-Kina.of Prusia,. Pennsylvania. 19406. _ _

. Abnor-.s1 Occurrence 24-Hour N:.tificatien.

Subicc t_:

1,1:nited Confir: ling U. T. Ullrich's phone. conversation vich Mr. Walt Baunack, Region

' States Nucicar-Regulatory Cocnission on June 2,1975.

Referencer Licenso Eucher DPR-/.4 4.7.A.2.f' Technical Specification

Reference:

t 50-277-75-40 Report No.:

i June 2,3975 P.cporc Date:.

Jun 2, M75 MM7/mst a**=tsarn=r,2%)P" e.IE.NTe*[t 4/*iCr-h,'-&.L -$_'dM -

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17314 R.D. I, Delta, Pennsylvcnia

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-,m_s den ;r; r:7.dcT-Jfier.%'."y.dafM. June.::c:axw ;n --- - -Suspected catessivo laner,e thru the "if 00-2-10-1543).

Valves.(!:0-2-10-343 and Y.0-2-10-3Q, and Outboard Injection Valve t

Conditions Prior to Occurrence:

Unit 2 chutdcnm.

Ellft Prior to shutdown, prelicinary Iccal leak rate ter,ts were perforced cs che d Description of Occurrence:

Follov-tests showed niner water Icsk=ge.

he IJG "A" fluid. These valves using unter aa a test ing shutdcun, confirr.atory-lesk rate testo using air vero perfor:acd on t i c.o de.

loop valvas vhile the "L" TdiR loop was placed in service in the shutdava coel n.:

fem dintcly Af ter repair of the "A" PJ3 loop. alves, the 'T ?.HA loop valves vc e fi m :ory leak rate. tes using v

'rei.oved f ron service to repair vithout perforning-'n conTtte preli.-insry dat "A" loop van

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de e::.= d the subject valve leakage (based oc

-air.

to authorire repair work and report auf ricient the preliuinary test) na no abnor=s1 occurrence..

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$URni~.tWFM".5GTi!G CAE~'of.'CeuFribEP"'*'=5"~"=0?'. H a"

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- Undpr investigotien.

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tf.Sedesig -bcsis heiSht.,1s.cre3 Q, :,

t Anc4yria of Occurrences.-=.

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- []JkO. Moperatdt:g' prid5urst of ~.t'he~'pMut46.durin ;J Even if the into the FJM syster..

7 than 49.1 Wig, thereby, precludin,*, oucicakageleaked back thrau;;h. these valves, the f the Icaia;;e would cutc r the Iu1R systo:a which is a closed nycten cad was tested satisfactorily as part o contair.:ent acrosphere Safety i=plications of this occurrence are therefore =inir.al.

q Type A ILRT.

repaired, reasmec. bled, and roter.ted.

Corrective /.ction:

"m e subject valves will be disasser. bled, ineptered,

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811ure Data:

None on these particular valves.-

Nery truly yours, i

$$f W U. T. Ullrich, Superintendent.

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i 8401200242 750612

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PDR ADOCK 05000277 PDR S

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UUh 2M REGION

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