05000244/LER-1979-003-03, /03L-0 on 790104:B Charging Pump Speed Control Operated Improperly W/Sticking Lower Varidrive Disc & Belt Slippage at Min Speed.Operation at 1 Speed Caused Local Lubrication Problems

/03L-0 on 790104:B Charging Pump Speed Control Operated Improperly W/Sticking Lower Varidrive Disc & Belt Slippage at Min Speed.Operation at 1 Speed Caused Local Lubrication Problems

ML17261A101
Person / Time
Site:	Ginna
Issue date:	01/24/1979
From:	Spector S ROCHESTER GAS & ELECTRIC CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML17244A340	List: 05000244/LER-1979-003, Forwards LER 79-003/03L-0 05000244/LER-1979-003-03, /03L-0 on 790104:B Charging Pump Speed Control Operated Improperly W/Sticking Lower Varidrive Disc & Belt Slippage at Min Speed.Operation at 1 Speed Caused Local Lubrication Problems
References
LER-79-003-03L, LER-79-3-3L, NUDOCS 7901290242
Download: ML17261A101 (2)

LER-1979-003, /03L-0 on 790104:B Charging Pump Speed Control Operated Improperly W/Sticking Lower Varidrive Disc & Belt Slippage at Min Speed.Operation at 1 Speed Caused Local Lubrication Problems

Event date:
Report date:
2441979003R03 - NRC Website

text

7 U~o5IUCLEAR REGULATORY COMMISSION LlCENSEE EVENT REPORT Qi (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION) 6 1

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~01 25 26 LICENSE TYPE 30 57 CAT 58 Q

,4Q I.ICENSE NUMBER 9

LICENSEE CODE 9Qso 1

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7 9QR 74 75 REPpRT DATE 80 7

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4 SOURCE 60 61 DOCKET NUMBER 68 69 EVENT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10 During maintenance of A charging pump (see LER 79-002) operator observed B charging

~p3 pump speed control not operating properly.

On investigation mechanic foreman found lower varidrive disc was sticking and excessive varidrive belt slippage at minimum speed.

At other than minimum speed the varidrive exhibited proper operation.

Pump 6

was stopped and isolated for maintenance, with C pump operable.

(T. S. 3. 2. 2. a).

~08 80 7

8 9

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8 SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CppE SUBCODE CPMPONENT CODE SUBCODE SUBCODE

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10 11 12 13 18 19 20 SEOUENTIAL OCCURRENCE REPORT REVISION LFRIRO EVENT YEAR REPORT Np.

CODE TYPE Np.

Q17 REPoRT

~79

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~00 9

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L LJ Ll L:I 21 22

'23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRD 4 PRIME COMP.

COMPONENT TAKEN ACTION ON PLANT METHOD HOURS O22 SUBMITTED FORM SUB..

SUPPLIER MANUFACTURER Q18 ~H Qio

~24 Q2O

~27 Q2 0

0 0 3

~N Q23 ~ Q24

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0 Q26 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 Pump bad been run at one speed causing localized lubrication problems.

Varidrtve was uncoupled, greased and exercised.

To prevent further problems the varidrive speed willbe varied more often and preventive maintenance inspections are being performed 3

on all units.

The unit is a U. S ~ Electric Motors 83 frame pneumatic type varidrive.

~14 7

8 9

FACILITY STATUS 99 POWER

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10 12 13 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ 0

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Q04 NA 7

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10 PERSONNEL EXPOSURES 7

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11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTION 4i 0

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11 12 LOSS OF OR DAMAGETp FACILITY 43 TYPE

DESCRIPTION

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9 10 PUBLICITY DESCRIPTIONQ mz ~NQ NA 7

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10 80 OTHER STATUS Q NA 80 45 44 80 80 80 7904890&q&

C USE ONLY 80 o 68 69 METHOD OF DISCOVERY DISCOVERY DESCRIPTION

~AQ31 Operator noticed speed controT problem.

44 45 46 80 LOCATIONOF RELEASE Q NA NAME OF PREPARER S.

S ector PHDNE 716/546-2700, ext ~ 291-2 15

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