ML19339C618

LER 80-032/03L-0:on 801013,during Refueling,Circulating Water Intake Bay Was Drained.Caused by Inoperable Priming Exhauster & Cooling Water Pump 21.Piping Mods Are Being Considered to Allow Maint W/O Effecting Operation

ML19339C618
Person / Time
Site:	Prairie Island
Issue date:	11/12/1980
From:	Hunstad A NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19339C611	List: ML19339C610 ML19339C618
References
LER-80-032-03L, LER-80-32-3L, NUDOCS 8011180689
Download: ML19339C618 (1)

Text

_.

UCENSEE EVENT REPORT CONTROL BLOCK: l 1

l l l l l lh 6

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

,R lM !N lP lI lN l 2 l@l 0 l0 l- l 0 l0 LICENSE 14 l 0 l NUMSER 0 l Ol -l0 l 0 l@l4 25 26 l1 LICENSE l1 l1 TYPEl 1 JOl@]67 CAT l 68 l@

8 9 LICENSEE CODE 15 WON'T 1o111 E'RU 60l t l@l61o l 5101010 ' 31 o l 61@l i l oEVENT l i IDATE a l s i o74l@l i l 11 i l 21 a l n80l@

7 8 OOCKET NUMBER 68 89 7S REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES 01o g; At Unit I refueling the Unit 1 circulating water intake bay was drained. In j

,g,3 , preparation for additional work in the area, several other drains dumping into the ;

lo 64 l l bay were isolated. The water supply to No. 121 Pump Priming Exhauster was also l 1o isI l isolated causing loss of prime to No. 21 Cooling Water Pump and loss of cooling l lo is l I water header pressure. Both diesel cooling water pumps started on low pressure. l lo l7 l l No effect on public health and safety since redundant equipment was operable. 1 inggi l Not repetitive. Tech Spec 3.3.D.1,a applies. J E CODE SU8C E COMPONENT CODE SUB DE S E lo19] lW l Al@ y@ l Zl@ l Xl Xl Xl Xl Xl Xlh l Z l@ y @ 20 7 8 9 10 11 12 13 18 19 SEQUENTIAL OCCURRENCE REPORT REVISION

,,,, EVENT YEAR R EPORT NO. CODE TYPE NO.

gug h "LER/RO l218l0l g23 l 0l 3l 2l 24 26 y

27 l0l3l W M lL l 30 b31 W

32

. 22 K N ACT ON ON PL NT ME HOURS 22 S8 I POR 8. SUPPLI R MAN F CTURER l3JG gl34Xlg {4g 3 l36Z l@

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40 gg 41 gg 42 l Z lg l Zl 9 l 9 l 9lg 43 44 4; CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h yl The priming exhauster was returned to service and No. 21 Cooling Water Pump was l l

again made operable. The pump was inoperable about 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />. Piping modifications I

,,,,,; are being considered te allow maintenance in these areas without affecting operation;

,, ,,,g of the opposite unit. l uLjl I 7 8 9 80 S  % POWER OTHER STATUS DIS O RY DISCOVERY DESCRIPTION 11 151 l E l@ l 1l0 l0 l@] NA l lA l@l ODerator Observation I A TIVITY Co TENT RELEASED OF RELEASE AMOUNT oF ACTIVITY LCT.ATION OF RELE ASE y y' *@ l Zl@] NA l l NA l PERSONNE$ EXPOSURES NUMBER TYPE DESCRIPTION NA l 11 l 71 l 0 l 0 l 0 l@l Z l@l PE RSONNE L INJU IES NUMBER oESCniPriON@

[TTIl8 l90 l 0 l 0 l@l12 NA l 11 80

[\ - LOSS OF OR DAMAGE TO FACILITY Q TYPE DESCRIPTION  %.,/

NA l 1G]D8 LzJ@l 7 9 10 80 g ISSUE' l @NADESCRIPTION _

j llllllllllllli 1 a9 8011180A.W NAME OF PREPARER

. nstad PHONE:

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