ML19208A719

RO 50-321/1979-66:on 790826,failed to Complete Instrumentation Checks & to Perform Acceptable HNP-1-9400. Caused by Unnoticed Limiting Conditions for Operation. Acceptable HNP-1-9400 Was Performed Upon Discovery

ML19208A719
Person / Time
Site:	Hatch
Issue date:	08/27/1979
From:	Manry M GEORGIA POWER CO.
To:
References
NUDOCS 7909170338
Download: ML19208A719 (2)

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RO TELEG%4 FORPa7 .

k.1 i R-01 RAXLEY. GA. 31513 .

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PMS m. JAMES P. O'REItti UNITED STATES NUrtEAR REGUlkTORY COVNISS10.4 ' [ . J1 DlHECTOR OF INSPECTION AND Elil0RCEMENT p . tl c

REGIC*i 11 4 SUITE 3100 L~'

101 l'.fRIETTA STREET y '3 ;

ATLAlil A, GEC%IA 30303 -

SUBJLCT:

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>- s HATCH UNIT !. 00CP.ET fl0. 50-321, NOTIFICATION OF REPCRTABLE CCCURREllEE NO. 50-371/1979-66 ,;

(ji.., y. ~-i NOTif LED: Rick Rogers DATE: 8-27-79 EM a- ?

DATE: 8-27-79 I3 TIME: 1630 f-0FSCRIPTION Of RLPORTABL E OCCURREllCE J .i FM

.J initial Condition

Steady state operation at low power for startup testing To1WwTng a' Fefueling Outage. , {c t.] -

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Nature of Occurrence:

f& 'b -J Failure to meet shutdown requirements of Tech. Specs. F /s T.K.1 wHbW NTrs- on 8-26-79. An acceptable HNP-1-9400 was not perforr*d b;; 2 ,

indicating increrable jet pop (s). An unacceptable jet pir p integrity was run. h~3 The understanding was that after the Test Shop had checked and calibrated in-  !

strumentation an acceptable 9400 would be perfomed. The instrur=ntation .]

checks were not cogleted that day and it was overlooked that an acceptable i-i HNP-1-9400 was not done for 8-26-79. This placed us in a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> shutdown requirement that was not recognized until the morning of 8-27-79. b. -t (p.}. 4

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. .j Irvrediate Corrective Action: l-  :.y .

g. J j, An acceptable HNP-1-9400 was performed at 1025 8-27-79. t v e

'[ n ~ d. i' 7900170339 h2! .

Cause: v e.

n Failure to recog'ize the fact that we were operating under an LCD. j( t c, g [q 9 (

5..+ g While investigating this occurrence it was discovered that HftP-1-9403 was 6

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performd twice and was unacceptable for 8-26-79. The Test Departant con-

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tinued work on calibrations, but Operations failed to perform an acceptatste -

HPiP-1-9403 on 8-26-79. .

g '2'd 3 j More investigation revealed that the HNP-1-9400 run on 8-25-19 was unaccept-  ?

I able but r-iscalculated to be acceptable. This fact was not recognized until 8-27,,79. J >

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i EuP_P.l.en.e._ntal Corr.ect.i.v.e _ Action: -

Calibration of RECIRC loop flow instrumentation. ',

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F Status of Redundant or Backup Syst_em.s:-  !

None I

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Impact to Other Unitt:

1 None  ;

Justification for Continued Operation;- -

w Accepteble co'npletion of HNP-1-9400 on discovery of condition. ...

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