05000278/LER-1980-026, Forwards LER 80-026/01T-0

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Forwards LER 80-026/01T-0
ML20062K313
Person / Time
Site: Peach Bottom Constellation icon.png
Issue date: 11/26/1980
From: Cooney M
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To: Grier B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20062K315 List:
References
NUDOCS 8012100490
Download: ML20062K313 (2)
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LER-2080-026, Forwards LER 80-026/01T-0
Event date:
Report date:
2782080026R00 - NRC Website
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text

o PHILADELPHIA ELECTRIC COMPANY

, 2301 MARKET STREET

~

h P.O. BOX 8699

[ [ PHILADELPHIA. PA.19101 a- ,

121548414000

~~.

13 o

n tiovember 26, 1980 i

il r . Boyce 11 . Crier, Director

, Ter; ion I office of Inupection 4 Enforcenent

!!!; flu c i c a r ll e g u l a t o r y Couaission f '31 P a r ft Avenue a '

'Cing of Prussia, PA 19406

')e a r :te . Grier:

SUUJECT: Licensee F,v e n t Report ifarrative Description Rea, ion I, The following occurrence was reported to !! r . Cougill, 1930.

Office of Inspection and Enforcement on .'!o v e ia b e r 14,

!!oference:

lteport Jo.:

Docket flo . 50-273 1.E ! 3-80-26/1T Report Date: t'o ve m b e r 26, 1930 Occierrence Date: !Joveuber 14, 1930 Facility:

Peach Sottom Atomic Power Station RD 1, Delta, Pennsylvania

_ Technical Snecification

Reference:

Technical Specification 3.5.C.1 states in part that, "The

I P C I Subsysten shall be operable whenever there is irradiated fuel in the reactor vessel...except as specified in 3.5.C.2..."

Technical Specification 3.5.C.2 states in part that "From a ni! after the .la t e that the !!P C I Subsysteu is .nade or found to be inoperable for any reason, continued reactor operation is permissable only durin2 the succeeding seven days...providing that...the ADS subsysten, the RCIC system, the LPCI subsystem and both core spray subsysteos are operable."

003 THIS DOCUMENT C0t! Tali 4S 5 POOR QUALITY PAGES jj

. ge g100 T I _ _ .

'f r . :l o y c e it . Grict, Director Page 2 neuerintion of the I? v o n t :

Operator observntion of flPCI flow controller revealed

.inwnncate output. IIpC T war. declared i no pe ra ble a n al required nev..illance centing wnn Initiated. Following investigation of the flow controller problem, it was replaced with the !!PCI flow controller fron Unit 2 thus resulting in an inoperabic Unit 2 11 P C I .

r.ra s on s .

11 n i t 2 was in the process of shutting down for unrelated The Unit 3 II P C I was ecsced with the replaced flow controller and detern'ned operabic.

Probable Consanucoce. g the Occurrence:

d u r i n o.

The Unit 3 !!PCI was inoperable for approxi=ately four hours which time all other Unit 3 ERCS systems uere operable and required surveillance testing was in progress. Unit 2 was in the nrocess of s hu t t inj; down at which time IIPCI would not be required to be operable. In addition, Unit. 2 llPCI was operable in manual with the controller reuoved.

Cause o' the Event:

A :ener diode and resistor in the UPCI GE:-!AC Type 540 flow controller failed, causing the output of the controller to drift.

Correceive Action:

As described a bove , the Unit 3 11 PC I cont. roller was replaced and tested satisfactorily. The failed components in the flow controller ori:tinally taken from Unit 3 were replaced and the controller satisfactorily tested. On November 16, 1930, the Unit 7 H l' f: 1 .: v n t e n was restored to service.

Very truly yours, 1

, -/

s /

' ',M,I.' J'. Cooney

! [b <' ! W A %

Supjerintendent Generation Division 3AA/kla Attachment cc: Director, :lRC - Office of Inspection & Enforcement

!! r . Norman M. It a ll e r , "IIC - Office of Mana;;ement &

Prograra Analysis

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