ML19249C891

Ro:On 790908,Unit 1 Was in Run Position & Unit 2 Was in Hot shutdown,E11-C001A,B & D Pumps Failed to Meet Operability Procedure HNP-1-3167 Due to Formula Errors in Pump Discharge Pressure Calculations.Units Shut Down & Formulas Reviewed

ML19249C891
Person / Time
Site:	Hatch
Issue date:	09/10/1979
From:	Manry M GEORGIA POWER CO.
To:
References
NUDOCS 7909190257
Download: ML19249C891 (2)

Text

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((, LLs b uv.wmour USNRC REGt.h. .: -

m a n ease L 05 BAXLET, GA.

11513 O g g

• G F ." ~~ ' F.Eassee PMS MR. JAMES P. O'REILLY 2,a KDet

'& t LONG \

UNITRD STATES NUCLEAR REGULATORT COwHISRION DIRECTOR OF INSPECTION AND . LN-

, REOION II b

• WE ENFORCFMEN% $[P ll

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• SUITE 3100 101 MARIETTA STREET EYW M

_ .. , ATLANTA, GEORGIA 30301

SUBJECT:

HATCH UNIT I & UNIT r"- P, DOCERT NOS. M0 1P1 & 90-164, lk a

NOTIFICATION OF REPORTABLE OCCURRENCE NOS. '

DATE: # 10-70 NOTIFIRD: Ross F. Rocean

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- DATE: 0-B-10 1

TIME: 2010 EDT DESCRIPTION OF REPORTABLE OCCURRENCE w .s

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J trior position.at to theF10h occurrence metawatts the Unit i reactor was in the run condition. l'heca'al; the Unit 2 reactor was in

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the hot shutdown l Nature or Deeurrence

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U I E11-C001A, 11 , ID punps t=11ed to nect the requ$recents or I their opernhility procedure de termi nnd tha$. "C" HNP-1-3167; it was latre been recalibrated. pump had also railed after R 11 - R 0018 0 had Still

~_ laten, with the units shutdown it

't was theiF discovered punp pressure that HNP-1 1167 and HNP-2-3165 had erao*s i formulas. ..

Ismediale 4 Corrective Actiott Operatkons init.i a ted steps f urott, ,

calibrate pressu're guages) lo prove finthe in tenance Requests to RHR systen per Tech operable, Specs section then brour,ht Uni t i re a c t.or to colService d nhtatwater town j

consulted about the pump cocenbility procedures.

3.5.0. The architect-engineers weae I

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HHP calculate k pump'4167discharr.e values shown on_R11-P1-R00bA-D.. pressures,

- and HNP-2-11 which A1 h a d e requal should r o r s [i n th the

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ars being.Peviewed by site and architeot-enr.ineering to derive

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htatu.-s of Redundant or Backup, Systems On Unit d ali four er the RHR Service

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- inoperable, but the othe~ F.merzency Core Cooling Systecs were

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The Unil N procedure wad also Peviewed and found to hue the

., same errors as Unit i ,1 Unit 2 was already shutdown to fix steam leaks.). > - s Jus ti fi enti on for Conlinued Oceration Both unils e were, shubdown; their related proceduren have been revised. .. -# -

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