ML20086F974

Telecopy AO 75-65:on 751015,alarm Received Indicating Sampling Sys Exhaust Pump Suction Low.Cause Under Investigation.Corrective Action to Be Determined After Investigation

ML20086F974
Person / Time
Site:	Peach Bottom
Issue date:	10/03/1975
From:	Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20086F969	List: ML20086F966 ML20086F970 ML20086F974
References
AO-75-65, NUDOCS 8401090744
Download: ML20086F974 (1)

Text

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j PHIL6DI*PP.IA E1EOTRIO COMPA3Y V

• - Peach Bottc= Ate =ic Power Station Delta, Pennsylvania 4 1731h October 3. 1975 Mr. J a=es P. O 'Reilly . Director .

l Office of Inspection and Enforec=ent mg Region 1.

Q United States Euclear. Regulatory Co==ission

63. Part avenue .

Eing of Prussia, Pennsylvania 19h06

Subject:

Abnornal occurrence 2L-Mour 3otifiestion Co'nfir=ing R. S. Fleisch= ann's phone conversation with Mr. Jalt Baunack.

Region 1. United States Nuclear Regulatory Co==ission on October 3. 1975

Reference:

License 3 umber DPR kk Technical Specification

Reference:

3.6.C.2

' Report No.: 50-277-75-65 '

Report Date: October 3. 1975 Occurrence Date: October 2 1975 Facility: P'esch Botto= Atomic Power Station

• R.D. 1 Delta. Pennsylvania 17314 *

• Identification of Occurrence:

• Dryvell Radiation Monitor inoperative.

l Conditions Prior to Occurrence: *

! Both units at approxi=ately.55% power.

, Description of Occurrence: -

Alar = vas received indic ating sa=pling syste= exhaust pu=p suction was low. During subsequent investigation it was found that flew to the Dryvell Radiation Monitcri=g Syste= vas blocked at a pressure control valve.

Designation of Apparent Cause of occurrence:

h Under investigation. . . _ _ ,

q ., Analysis of Occurrence:

The Dryvell Radiation Monitor was returned to service shortly after the proble: vas identified, and satisfact.ory operation has continued,

• ' although investigation of the proble= is still in progress. Data

' aisplayed on the radiation =onitar when returned to service indicated nor=al dryvell radiation levels =aking the' safety i=plications of

.I this occurre=ce =inimal.

4 , - Corrective Actin =: .. . . . . . . _. ~ . . . , .

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f To be deter =ined after invest'igation. \

p' Failure Data: k None. -

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I Very truly yours. J

s. f < -ns l --

'd . T. Ullrich. Superintenment

Peach Sctto= Ato=ie Power Station 5 i

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