ML19208A719

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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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k.1 i RO TELEG%4 FORPa7 R-01 RAXLEY. GA.

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PMS m. JAMES P. O'REItti

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UNITED STATES NUrtEAR REGUlkTORY COVNISS10.4

[. J1 DlHECTOR OF INSPECTION AND Elil0RCEMENT p. tl REGIC*i 11 c

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'3 SUITE 3100 101 l'.fRIETTA STREET ATLAlil A, GEC%IA 30303 iK SUBJLCT:

HATCH UNIT !. 00CP.ET fl0. 50-321, NOTIFICATION OF REPCRTABLE CCCURREllEE s

( y. ~-i NO. 50-371/1979-66 j.,

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NOTif LED: Rick Rogers EM DATE:

8-27-79 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

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To1WwTng a' Fefueling Outage.

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-J Nature of Occurrence:

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.

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The understanding was that after the Test Shop had checked and calibrated in-3 strumentation an acceptable 9400 would be perfomed. The instrur=ntation checks were not cogleted that day and it was overlooked that an acceptable

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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 b.

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-t requirement that was not recognized until the morning of 8-27-79.

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.j Irvrediate Corrective Action:

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e An acceptable HNP-1-9400 was performed at 1025 8-27-79.

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

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Cause:

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While investigating this occurrence it was discovered that HftP-1-9403 was 6

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f 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 u

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

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d More investigation revealed that the HNP-1-9400 run on 8-25-19 was unaccept-

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I able but r-iscalculated to be acceptable.

This fact was not recognized until J

8-27,,79.

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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:-

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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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