05000249/LER-1980-004-03, /03L-0:on 800202,while Increasing Load by 2 Mwe Per Hour,Alarms Received in Control Room Indicating Failed Jet Pump.Jet Pump 13 Failed.Cause & Corrective Action Will Be Described in Supplemental Rept

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/03L-0:on 800202,while Increasing Load by 2 Mwe Per Hour,Alarms Received in Control Room Indicating Failed Jet Pump.Jet Pump 13 Failed.Cause & Corrective Action Will Be Described in Supplemental Rept
ML19294B707
Person / Time
Site: Dresden Constellation icon.png
Issue date: 02/28/1980
From:
COMMONWEALTH EDISON CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17192A536 List:
References
LER-80-004-03L-01, LER-80-4-3L-1, NUDOCS 8003050373
Download: ML19294B707 (3)
v • d • e


LER-1980-004, /03L-0:on 800202,while Increasing Load by 2 Mwe Per Hour,Alarms Received in Control Room Indicating Failed Jet Pump.Jet Pump 13 Failed.Cause & Corrective Action Will Be Described in Supplemental Rept
Event date:
Report date:
2491980004R03 - NRC Website
v • d • e

text

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IRC F ORM 366'

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U. S. NUCLE AR RECUL ATORY COMMITS 80N 17U LICENSEE EVENT REPORT CONTROL SLOCC l l

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4 75 miE* ORT OATE d;

EVENT DEStRIPTICN AND PROS ABLE CO*.5ECUENCES h a

2 J'inile increasing load by 2 :he/hr, alarms were received in control room indicating a j

l f ailed j et pu::p.

DOS 202-2, " Jet pump Operability Check" verified that apparent o

3 l f ailure for jet pumps #13 and #14 had occurred.

Further special testing indicated only; o,4 l jet pump #13 failed.

Safety si;;nificance was minimized by bringing unit to cold shut-l e

5 First time for occurrence jdown condition within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> as required by Tech. Specs.

0 oi Iof this type.

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CAUSE

CAUSE COVP VA LV E COOE COOE SL9COOE COYPONENT CODE SUSCOOE SU8 CODE c i s l@ Ir l@ 12 !@ l3P l u l u l P i x i x l@ l Kl@ l zi @

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9 SECUENTI AL OCCupaENCE RE* CAT A E v eSION EVENT VE AR R E*C AT NO.

COOE TYPE NO.

@ LE R.ROis l0 l l-l I O i 01 a l lel 1013l lL I l-1 01 E Po a r 21 22 23 24

.' 6 27 28 29 30 31 32 ACTION FUTUAE EsFECT S=VTOOWN AM AC MV E NT NP p O-4 PRiVE tOvP.

COMPONENT SU8 MITT E C FORM >v6 Sv88LI E R MANWFACTURER TAKEN ACTICN ON PLANT METNCO MOURS lAl@lXI@

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33 34 JS 36 32 40 el 42 43 44 47 CAUSE DESCRIPTICN AND CCRRECTIVE ACT'ONS h i

o l Preliminary remote TV and visual observation has indicated that on1v jet ouro "13 has I

l failed.

Future plans include removir.c failed cocoonents of iet cumo #13 and analvrine !

i i

lcause of failure.

Supplemental report will be issued exclaining mode of failure and i

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l corrective action taken.

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3 1

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3 9 90 FactLITv 3

METMOD OF STATUS NPOWEA OTH E R ST A TUS DISCOVE R Y OfSCOVERV CESCRIPTION Fl@ l0 l6 l6 lg N/A l

l A l@l Operator Observation l

5 8 9 to 12 13 44 45 46 SO ACT?vtTY CONTENT RELEASED OF mE LE ASE AMOUNT OF ACTivlTV LOCATION OF RELE ASE l :l @ I: Ig N/A l

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3 9 10 tt 44 45 80 PERSONNEL EXPOSURES NUveER TYPE OESCRIPTION l 0 l 010 l@l Z l(vl N/A l

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7 8 9 11 12 13 80 PE ASONNEL INJLRIES NUYBER DE!CRe8 TION 0l010j@l N/A.

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8 9 11 12 80 LOSS OF 04 O AV AGE TO F ACILITY 8 00306g 333 E

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NRC USE ONLY IISUE O@lDE CP TION Yl On 2/2/80 local newscacers and radio, Associated Press, andi i !IIIi1I II IIJ$

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Chicago Newspapers notified.

58 69 so -

9

DESCRIPTION OF EVENT

6 lb/hr. and notified the He immediately started to decrease ' low to get below 93 x 10 Shift Foreman.

The following changes in reactor parameters were observed:

T.* I 0215 TIME 0230 MWe 539 511 Total Core Flow 97.62 104.77 Core plate 4P 16.12 13.8 A Recire Loop Flow 49 49 3 Recire Loop Flow 49 54 At this time it was determined that a possible jet pump failure had occurred. A full set of jet purp readings were obtained from the aux electric room:

JET PUMP FLOW JET PUMP FLOW r!1 3.7 7.1 3.5 2

4.0 12 3.5 3

4.2 13 5.3 4

3.3 14 2.8 5

4.1 15 3.4 6

4.1 16 3.4 7

4.4 17 3.7 8

4.2 18 3.7 9

4.3 19 4.0 10 4.2 20 3.6 After these readings. the Operator then performed DOS-202-2, " Jet Pump Operability Check".

It was then determined that an apparent failure of the jet pump #13 had occurred.

An orderly shutdown was begun to bring the unit to cold shutdown within 24 hrs.

cs required by Technical Specifications.

/v.d DEVIATION REPORT ovR NO.

Commonwealth Ed. son

$TA UNIT YEAR N O.

D 3 5 P A R T_lj T I TL E. G F DE v'l AT I CN OCCU RRE D 2-2-80 0230 Failure of Jet Pumos d13 (B Loco) can ve-a SYSTEM AFFECTED (0200)

PLANT CONC 6TIONS If 5flNG L) 0 Recirculation 511 1595

. teinfyy,g3 voeg Run own t va ri yes ye C11CRIPi10N Of VENT Received alarms of hi2h condensate demin. flow, hich cond. demin differential pressure, and high recire. flow.

The operator noticed a 30 Mwe drop in power.

Operator ran an 6

OD-3 immediately and discovered that total core finw had risen to 104.26 X 10 lb/hr. (OVE DESCRIPTION OF CAUSE Unknown

'O Tr1 E R APPLICAELE iNFORMATION Comouter data attached.

EQUIPMENT C YES DR NO.

WR NO.

i'. Pietrvoa 2-2 an FAILU RE

(,_,,j NO D 4587 y3;ess,gg 3ggy,30, care PART 2 CPERATING ENGINEERS COVMENTS An orderly shutdown was ir:rediatelv initiated.

~he reactor was placed in cold shutdown within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> as required by Tec. Spec.

3.o.G.I.

l SAFETY-TYPE OF CEVIATION EVENT CF POTENTIAL I TECH SPEC NON-REPCRTABLE ANNUAL RELATED REPORTAB4.E CCCURRENCE PUBLIC INTERESr VIOLATION OCCURRENCE REPCRTING AR ISSUED

'OCFR21

!4 OAY YES YES y

NOTIFICATICN NO NO X

30 CAY A.A,a 9.s REPORTA2LE CCCURRENCE ACTICN ITEM NO.

PROYPT CN-SITE NOTIFICATION NUMBER E. Budzichowski 2-2-RO n23n TITLE CATE TIME 80-4/03L6 R. M. Racan 2-2-RO n ',.-

TITLE CATE TIME 24-HOUR NRC NOTIFICATION PROMPT OFF-SITE NOTIFICATICN m

(C0URTESY)

ITPH Jim garygr 3/n/an 4.cn i.,

F. A. Palmer 2/2/S0 0655 w

REGICN 111 DATE 7tME TITLE CATE TIME TGM

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REGION ilI a COL CATE TIME T ' TL E CATE TlVE RESPONSI5LE COM ANY 0 RICER INFORMEC OF l0CFAZ1 ichael Wright

,_._on ONri+icNg AND aEi n EcOc7 r0 No" TITLE CAIi I'V' REVI Ew AND CCMoLETED Michael Wric:ht 2/4/80

//

M RATING EGiNE -

DATE

/ "[ [/j 6' '

ACCEPTANCE SY STATION REVIEW AS RECUIRED A

u OATE OI 'N/

RESOLUTION APPROVEC AND

//44

[ h AUTHORfZEC FOR CISTRIBUTION

%' /ST AT i r/; LPER I NTENCENT

/ C A TT.

90*$t76 10 ?? IPO#u iS*52**)

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