ML20125C607

RO-50-321/79-98:on 791210,while Operating at 80% Power, Found That Reactor Core Isolation Cooling Was Inoperable on 791208,w/o Proving HPCI Operable Per Tech Specs.Caused by Personnel Error

ML20125C607
Person / Time
Site:	Hatch
Issue date:	12/11/1979
From:	Manry M GEORGIA POWER CO.
To:
References
NUDOCS 8001100542
Download: ML20125C607 (2)

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c. m. Urr.ar RO TELEGRAM FORMAT, p'~:- :, . P. D. CHENDIW

.f*; ~01 8AXLEY, GEORGIA31513

, , 3g _  ; u. s. xm PMS MR. JAMES P. O'REILLY I&#"  !

UNITED STATES NUCLEAR REGULATORY COMMJSSION DIRECTOR OF INSPECTION AND ENFORCEMENTI f Il REGION II P 2

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SUITE 3100 M i 101 MARIETTA STREET ATLANTA, GEORGIA 30303

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SUBJECT:

HATCH UNIT i. DOCKET NO. 50-321, NOTIFICATION OF REPORTABEL OCCURRENCE l t NO 50-321/1979-98 l

- NOTIFIED: R. Rogers DATE: 12-10-79 1 TIME: 1415 DESCRIPTION OF REPORTABLE OCCURRENCE: Non-compliance of Technical Specification 3.5.E i Initial Condition j On 12-10-79 while operating at 80% power, it was discovered that RCIC was in- l operable on 12-8-79 without proving HPCI operable per Tech Specs 3.5.E.2 and without meeting shutdown requirements per Tech Specs 3.5.E.3. RCIC tripped  ;

on High Turbine Exhaust Pressure and was properly logged by shif t personnel  ;

but shif t personnel failed to intnediately prove H,PCI operable. HPCI has been proven operable on 12-09-79 Nature of Occurrence: ,

1 Failure to consider RCIC systeminoperable af ter a trip on high turbine exhaust ,

pressure on 12-8-79. Therefore, the HPCI system we,s not proven operable as require by Tech. Spec. 4.5.E.2 Also, Tech. Spec. section 3.5.E.3 was not compiled with.

l Irvnediate Corrective Action: -

!. None as far as system operability is concerned.

.Cause:

Personnel oversight 90008250 l

. S_upplemental Corrective,_

e Action: l

_le-emphasized the importance of complying with limited condition of operation as stated in Tech. Spec. q l

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_ Status of Redundant or Backup Systems:

At time of discovery, the backup system was operable as demonstrated on 12-9-79.

Impact to _0th_er Units:

None. Operation of RCIC on Unit I has no effect on Unit two system.

Justification for ContinJed Operation: ,

The RCIC and HPCI system are both operable as demonstrated 12-9-79.

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hm .f/4L M. Manry Plant Manager 9000825i l

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