05000317/LER-1979-017-03, /03L-0 on 790515:during Overspeed testing,12 Diesel Generator Auxiliary Blowers Failed,Rendering Diesel Inoperative.Caused by Interference Between Lobes of Blower. Blower Returned to Vendor for Rebuilding

/03L-0 on 790515:during Overspeed testing,12 Diesel Generator Auxiliary Blowers Failed,Rendering Diesel Inoperative.Caused by Interference Between Lobes of Blower. Blower Returned to Vendor for Rebuilding

ML19259C199
Person / Time
Site:	Calvert Cliffs
Issue date:	06/12/1979
From:	Carroll J, Romney K BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19259C198	List: 05000317/LER-1979-017, Forwards LER 79-017/03L-0 05000317/LER-1979-017-03, /03L-0 on 790515:during Overspeed testing,12 Diesel Generator Auxiliary Blowers Failed,Rendering Diesel Inoperative.Caused by Interference Between Lobes of Blower. Blower Returned to Vendor for Rebuilding
References
LER-79-017-03L-01, LER-79-17-3L-1, NUDOCS 7906140352
Download: ML19259C199 (2)

LER-1979-017, /03L-0 on 790515:during Overspeed testing,12 Diesel Generator Auxiliary Blowers Failed,Rendering Diesel Inoperative.Caused by Interference Between Lobes of Blower. Blower Returned to Vendor for Rebuilding

Event date:
Report date:
3171979017R03 - NRC Website

text

., - o,~,..

....._.,_..m_...,

u.m LICENSEE EVENT REPORT CONTROL BLOCK: l l

l l

l l lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6

l M l D l C { C l N l 1 l@15l010 l-1010101010 l-1010 l@l4 l1 11 11 l1 l@l l

o 1

9 LICENSEE CODE 14 LICENSE NUMdER 25 26 LICENSE TYPE JO 57 CAT-58 7

8 CON'T Eu'"cE l L l@l0 l 5101010 l3 l1 17 l@l0 l5 l1 15 [719 l@l01611 1217 l9 l@

o 1

7 8

60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROB ABLE CONSECUENCES h f oTTI Louring oerformance of oversoeed testina 12 diesel cenerator auxiliary blower o a 1 failed at 0930 rendering the diesel inocerative. Diesel cenerators 11 and 21 Iwere tested and assioned to Unit 2 which was coerating at 100% oower. Unit 1 l

o 4

o s lwas in mode 6 with no core alterations or reactivity changes in progress. At I

o e

12330 on 5/15/79 11 diesel cenerator was reassioned to Unit 1 to facilitate fuel I

o 7

l movement. UDon ComDletion of Core alteration 11 diesel Cenerator was again assioned l

I to Unit 2 at 0821 on 5/17/79.12 diesel generator was returned to service at 1430 (CONT)l o

a 7

8 9 80 C DE C E SLBC E CCMPCNENT CODE SuBCC O E SU OCE ol9 l E l E l@ W@ lB l@ l Bl Ll 0l WI El Rl@ l Z l@ [Z_j @

7 8

9 10 11 12 13 18 19 20 SEQUENTIAL OCCuRAENCE REPORT REVISION LEReRO EVENT YEAR R EPCRT NO.

CODE TYPE NO.

@,agRT l 7l 9l l-l 10 l1 17 l l/l l 013 l lLl l-l l 0l

_ 21 22 23 24 26 27 23 29 30 31 32 TA N A ON C PLANT VETH MouRS 22 S 8 i FC 8.

SLPP LI E R MAN FAC RER C [gl34Zl@

l Z lg l36 Zl@l 0l 0l Ol l

lYl@

l Yl@

l Al@

lF l0 l1 l0 Ig 35 37 40 41 42 43 44 47 33 CAUSE CESCRIPTION AND CORRECTIVE ACTICNS h iio lThe blower failure was caused by an interference develocing between the lobes of I

i i

i the blower. The bearings were insoected and no deterioration was noted. The I

i 2

I blower has been returned to the vendor for rebuilding.

If the exact cause of i

,,3 l failure is detennined during rebuilding, it will be submitted as an uodate l

[ report.

i A

'^ 2E S

s.CVWE R OTHER STATUS 015 RY DISCOVERY CESCRIPTION Hl@ l0l0l0[@l NA l

l B l@l Test l

i s

' JTIVITY COTTENT RELE ASED OF RELEASE AMOLNT OF ACTIVITY LOCATION OF RELEASE l Z l @ l Zlgl NA l

l NA l

1 6

PERSONNEL EXPCS ES oESCm,T,0~@

~uvuR Tv.E l0l0l0[@lZl@l NA l

1 7

2 i3 80

,ERSONNEL m;u'a,,,

oeSCm 1tO~@ NA 2284 12'3

.. A l0l0l0[@l l

i a

7 8 3 11 12 80 TV E DESCR PT ON lZ[@l NA l

2 9

7 8 9 10 go PUB LIC!TY qqgggggggy

,,S06140'5 B I S E DE SCRIPTICN lri;;Iii;i;j i

i 7

8 9 10 68 69 30 g NAME OF PREPARER d. I. Carroll /X. M. Romnev (301) 234-7943/7960 2

psoys

DOCKET NO. 50-317 EVENT DATE 05/15/79 REPORT DATE 06/12/79 LER N0'. 79-17/3L ATTACHMENT EVENT DESCRIPTION AND PROBABLE CONSEOUENCES:

(CONT) on 5/23/79. This is not a repetitive occurrence.

2284 124