ML17261A101

LER 79-003/03L-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

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: ML17244A339 ML17261A101
References
LER-79-003-03L, LER-79-3-3L, NUDOCS 7901290242
Download: ML17261A101 (2)

Text

7 NRC'Ft3RM466 U~o5IUCLEAR REGULATORY COMMISSION

{7-77)

LlCENSEE EVENT REPORT CONTROL BLOCK: Qi (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

I 6

~p 7 8 9 N Y R LICENSEE CODE E G 1

,4Q 7 0 0 0 0 0 I.ICENSE NUMBER 0 0 010 25 Q0 26 4 1 1 LICENSE TYPE 1 1 30 QE~QR 57 CAT 58 CON'T

~01 SOURCE

~Lm 0 5 0 0 0 9 4 4 Q 0 1 0 4 9Qso 74 75 1 9 4 7 9QR 80 7 8 60 61 DOCKET NUMBER 68 69 EVENT DATE REPpRT 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 7 8 9 80 SYSTEM CAUSE CAUSE COMP. VALVE CODE CppE SUBCODE CPMPONENT CODE SUBCODE SUBCODE

~OB 7 8

~pc Q 9 10 11 Z QEE ~ZQER 12 M

13 E C P U N 18 Q LJQ LBQ 19 20 SEOUENTIAL OCCURRENCE REPORT REVISION Q17 LFRIRO REPoRT ACTION FUTURE EVENT YEAR

~79 21 22 EFFECT

~

'23 SHUTDOWN

~00 24 REPORT Np.

9 26

~~

27 ATTACHMENT L

28 CODE LJ 29 NPRD 4 TYPE Ll 30 PRIME COMP.

L:I 31 Np.

32 COMPONENT TAKEN ACTION 33 Q18 ~H 34 Qio ON PLANT

~24 35 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q2O METHOD

~27 36 Q2 37 0

Q27 HOURS O22 0 0 3 40 SUBMITTED

~N 41 Q23 ~

FORM SUB..

42 Q24 SUPPLIER

~N 43 Q26 44 MANUFACTURER U 1 5 0 47 Q26 Pump bad been run at one speed causing localized lubrication problems. Varidrtve was uncoupled, greased and exercised. To prevent further problems the varidrive speed will be 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 80 FACILITY STATUS gLlIIo~0~

99 POWER OTHER STATUS Q METHOD OF DISCOVERY DISCOVERY DESCRIPTION

~ls 9 E Qts IQ7g NA 44

~AQ31 Operator noticed speed controT problem.

7 8 10 12 13 45 46 80 ACTIVITY CONTENT 0

RELEASED OF RELEASE

~Z Qsg Z AMOUNT OF ACTIVITY NA Q LOCATION OF RELEASE NA Q

Q04 7 8 9 10 44 45 80 PERSONNEL EXPOSURES 7 8 9 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION 4i 0 ~OO O Q40 NA 7 8 9 11 12 80 LOSS OF OR DAMAGE Tp FACILITY TYPE DESCRIPTION 43 0 ~ZQ47 NA 8 9 10 80 PUBLICITY DESCRIPTION Q 7904890&q& ' C USE ONLY mz 7 8

~NQ 9 10 NA 68 69 80 o NAME OF PREPARER S. S ector PHDNE 716/546-2700, ext 291-2 ~ 15

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