ML19249C891
| ML19249C891 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 09/10/1979 |
| From: | Manry M GEORGIA POWER CO. |
| To: | |
| References | |
| NUDOCS 7909190257 | |
| Download: ML19249C891 (2) | |
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USNRC REGt.h.
L 05 BAXLET, GA.
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- G F." ~~ ' F.Eassee a n ease PMS MR. JAMES P. O'REILLY 2,a KDet UNITRD STATES NUCLEAR REGULATORT COwHISRION LN-
'& t LONG \\
DIRECTOR OF INSPECTION AND REOION II ENFORCFMEN% $[P ll b
- I EY M SUITE 3100 101 MARIETTA STREET W
ATLANTA, GEORGIA 30301
SUBJECT:
HATCH UNIT I & UNIT P,
DOCERT NOS. M0 1P1 & 90-164, r"-
l k NOTIFICATION OF REPORTABLE OCCURRENCE NOS.
a DATE:
- 10-70 NOTIFIRD:
Ross F.
Rocean
',",i DATE:
0-B-10 TIME:
2010 EDT 1
DESCRIPTION OF REPORTABLE OCCURRENCE w
P
-' Initial Condslion
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trior to the occurrence the Unit i reactor was in the run
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position.at F10h metawatts l'heca'al; the Unit 2 reactor was in the hot l
shutdown condition.
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Nature or Deeurrence UI E11-C001A, 11,
ID punps t=11ed to nect the requ$recents or their opernhility procedure HNP-1-3167; it was latre I
de termi nnd tha$.
"C" pump had also railed after R 11 - R 0018 0 had been recalibrated.
Still laten, with the units shutdown it
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was discovered that HNP-1 1167 and HNP-2-3165 had erao*s i theiF punp pressure formulas.
't Ismediale Corrective Actiott 4
Operatkons init.i a ted steps f urott, fin in tenance Requests to calibrate pressu're guages) lo prove the RHR Service water systen operable, then brour,ht Uni t i re a c t.or to col d nhtat town per Tech Specs section 3.5.0.
The architect-engineers j
consulted about the pump cocenbility procedures.
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HHP k '4167 - and HNP-2-11 A1 h a d e r r o r s [i n th calculate pump discharr.e values shown on_R11-P1-R00bA-D.. pressures, which should equal the
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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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