ML17261A137
| ML17261A137 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 08/10/1979 |
| From: | White L ROCHESTER GAS & ELECTRIC CORP. |
| To: | Ziemann D Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7908200346 | |
| Download: ML17261A137 (11) | |
Text
SUBJECT:
Responds to request for info re Tech Spec changes. Forwards dc single line diagramqmaint procedures M 38'.6 8
38,7E Revision 1
8 aperture cards of drawings SS 241 041
- 045, w/over size drawing,
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AOOIS COPIES RECEIVED:LTR ENCL P SIZE:
TITLE: GENERAL DISTRIBUTION FOR AFTER ISSUANCE OF'PERATING *LIC
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ACTION:
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NO DOCKET FACIL',50-244 Robert Emmet Ginna Nuclear Planti Unit li Rochester G
05000240 AUTH'AME AUTHOR AFFILIATION WHITE EL ~ D, Rochester Gas 8 Electric Corp.
REC IP ~ NAME RECIPIENT AFFILIATION Z IEMANNED, C, Operating Reactors Branch 2
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sent(Ski zerzirz ROCHESTER GAS AND ELECTRIC CORPORATION o
, lOII'"
'j'lAPI 89 EAST AVENUE, ROCHESTER, N.Y. 14649 LEON D. WHITE, JR.
VICE PRCSIOENT TELEPHONE.
ARCA COOK 7ld 546-2700 August 10, 1979 K.Nk~'!lÃPV.sp[g~yy Operating Reactors Branch No.
2 U.S. Nuclear Regulatory Commission Washington, DC 20555
Subject:
Technical Specification Changes for the Inclusion of Two 75 Amp Battery Chargers R.
E.
Ginna Nuclear Power Plant Docket No. 50-244
Dear Mr. Ziemann:
In response to a request for information from a member of the NRC Staff, Mr. Sang Rhow, the following letter and enclosures are submitted.
1.
Three copies and one aperature card of the dc single line (33013-756) diagram showing all four battery chargers, the transfer switch and the ac safeguards sources are enclosed.
2.
Maintenance procedures M-38.6 and M-38.7, Revision 1, are being enclosed.
A review of these procedures will show that separation between the two safeguards
- trains, A and B, has been maintained on both the dc and the ac 480 volt systems, when the two 75 amp chargers are tied together.
In 1979, Revision 1 of these two procedures was written to corporate a key lock on the Battery Charger Tie Switch (1A1 to 1B1).
3.
Aperature card copies of drawings SS-201-041 through 045 are enclosed.
These drawings are the motor control center summary listings.
A review of these listings will show that the MCC units referenced on the dc single line diagram are supplied as follows:
MCC 1K is fed from MCC 1C, which is fed from safeguards bus 14, train A; and MCC 1J is fed from MCC 1D, which is fed from safeguards bus 16, train B.
I hope that the above information, drawings will answer all your questions pertaining to the Charger" technical specification change.
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D. Whi e, Jr.
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PROCWM" NO.
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1A BATTERY CHARGER MAINTENANCE OR REPAIR T:.~C.M R~
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M-38.6:1 M-38.6 lA BATTERY CHARGER MAINTENANCE OR REPAIR
1.0 PURPOSE
To provide the steps to maintain or repair the 1A battery charger.
2.0 REFERENCES
2.1 Westinghouse Rectomatic Self-regulating Battery Charger Instruction Book, I.B. 20-300-05, November 1, 1966.
2.2 2.2.1
/
2.2.2 2.2.3 2.2.4 Westinghouse Electric Corporation Prints.
Schematic Diagram jj3393D55.
Wiring Diagram j/3393D56.
Power Supply Regulator With Current Limit Controller Schematic j/880D771.
Power Supply Regulator With Current Limit Wiring Diagram j/880D772.
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3.2 INITIALCONDITIONS
This procedure maybe done at any Plant condition.
Recommended spare parts are available for repair if needed.
3.3 Battery charger maybe energized for tests required to perform trouble shooting and verification of service operability with proper safety precautions being observed.
Steps in conjunction with this may be marked N/A.
3.4 The lAl battery charger is in service and capable of accepting rated charging capacity.
NOTE:
The 1Bl battery charger maybe transferred to the 1A battery system if needed for additional charge capacity as covered by steps in instructions.
3.5 Notify QC personnel before work commences.
4.0 PRECAUTIONS
Proper safety precautions shall be observed while taking test readings when the battery charger is in an energized state of operation.
The "A" and "B" battery systems are not to be tied together in any state of operation other than cold shutdown except when given direct p'ermission by the Plant Superintendent.
4.3 M-38.6:2 t
t
.'She 1Bl battery charger maybe transferred to the lA battery system as required by additional charging capacity desired or duration of 1A charger outage.
.4 When completing instructions, steps are to be completed in exact order or damage to battery chargers will occur.
4.5 Holds shall be placed as required in accordance with procedure A-36.
4.6 Any replacement parts installed shall be requisitioned in accordance with procedure QC-801.
5.0 INSTRUCTIONS
5.1 Permission has been received from the Shift Foreman to perform maintenance and/or repair of lA battery charger.
5.2 If Steps 5.3 thru 5.6 are to be completed, notify the Control Operator that a battery charger failure alarm will be received.
5.2.1 Obtain key to padlock on Battery Charger Tie 1Al to 1B1 switch in "A" Battery Room.
Shift Foreman Key Issue 5.3 Open the 1B1 battery charger 480 volt double throw disconnect (dual power feed from MCC 1J normal feed and MCC 1K emergency feed) in the lB battery room and place in the "Center - Off" Position.
OFF 5.4 Open and hold swith j/6 in the lB battery main fuse cabinet-Section g2.
5.5 Unlock padlock and close the IAl to lBl battery charger tie switch in the 1A battery room.
CLOSED 5.6 Close the 1B1 battery charger 480 volt double throw disconnect (dual power feed from MCC 1J - normal feed and MCC lK emergency feed) in the 1B battery room to the MCC 1K emergency feed.
CLOSED 5.7 NOTE:
The current may have to be balanced between the 1Al and 1Bl charger.
(To be done by electrician).
Notify the Control Operator that a battery charger failure alarm will be received.
5.8 Open and hold the 480 volt AC circuit breaker for the 1A battery charger on MCC 1C position 4HH HELD 5.9 Open and hold the AC circuit breaker on the 1A battery charger.
HELD
- 5. 10 Open and hold switch fjl (1A battery charger) in the 1A battery main DC distribution panel - Section I.
HELD Shift Foreman will accept markup if required and log same in Hold Book.
MARK UP RECEIVED
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~12 -38.6:3
.perform maintenance and/or repair as necessary waav Westing-house Instruction Book IB-20-300-05 as guide line.
MAINTENANCE COMPlETE
.13 Release markup, if applicable.
MARKED OFF 5.14 5.15 5.16 5.17 5.18 Remove hold and turn switch jjl (lA battery charger) in 'the 1A battery main DC distribution panel - Section I to the "ON" position.
Remove hold and turn the AC circuit breaker on the 1A battery charger to the "ON" position.
Remove hold and turn the 480 volt AC circuit breaker for the 1A battery charger on MCC 1C position 4HH to the "ON" position.
If Steps 5.18 thru 5.21 are to be completed, notify the Control Operator that a battery charger failure alarm will be received.
Open the 1Bl battery charger 480 volt double-throw disconnect (dual power feed from MCC lJ - normal feed and MCC 1K - emer-gency feed) in the 1B battery room and place in the "Center-Off" position.
ON ON ON OFF 5.19
, %.19.1 Open the 1A1 to 1B1 battery charger tie switch in the 1A battery room and lock open.
lOCKED OPEN Return key to Shift Foreman for padlock on Battery Charger Tie 1A1 to 1B1 switch in "A" Battery Room.
Key Received by Shift Foreman 5.20 5.21 5.22 Remove hold and turn switch 7/6 in the lB battery main fuse cabinet - Section 2 to the "ON" position.
NOTE:
Charger currents may have to be balanced.
by electrician).
Complete list of maintenance performed, purchase order number of parts used - if any and attach to procedure.
Close the lBl battery charger 480 volt double-throw disconnect (dual power feed from MCC 1J - normal feed and MCC 1K emer-gency feed) in the 1B battery room to the MCC 1J normal position.
CLOSED (To be done ON COMPLETED BY:
DATE COMPLETED:
QC ENGINEER:
ELECTRICIAN FOREMAN:
SHIFT FOREMAN:
PORC REVIEW DATE:
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M-38.7:1 M-38.7 lB BATTERY CHARGER MAINTENANCE OR REPAIR x.0 PURPOSE:
To provide the steps to maintain or repair the 1B battery charger.
2.0 REFERENCES
2.1 Westinghouse Rectomatic Self-regulating Battery Charger Instruction Book, I.B. 20-300-05, November 1, 1966.
2.2 2.2.1 2.2.2 2.2.3 Westinghouse Electric Corporation Prints.
Schematic Diagram
$/3393D55.
Wiring Diagram g3393D56.
Power Supply Regulator With Current Limit Controller Schematic J/880D771.
2.2 '
Power Supply Regulator With Current Limit Wiring Diagram i/880D772.
3.2 INITIALCONDITIONS
This procedure may be done at any Plant condition.
Recommended spare parts are available for repair if needed.
3.3 Battery charger may be energized for tests required to perform trouble shooting and verification of service operability with proper safety precautions being observed.
Steps in conjunction with this may be marked N/A.
3.4 The 1Bl battery charger is in service and capable of accepting rated charging capacity.
/
NOTE:
The lAl battery charge may be transferred to the lB battery system if needed for additional charge capacity as covered by steps in instructions.
3.5 Notify QC personnel before work commences.
4.0 PRECAUTIONS
4.1 Proper safety precautions shall be observed while taking test readings when the battery charger is in an energized state of operation.
The "A" and "B" battery systems are not to be tied together in any state of operation other than cold shutdown except when given direct permission by the Plant Superintendent.
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4.3
~
M-38.7:2 The lAl battery charger may be transferred to the 1B battery system as requied by additional charging capacity desired or duration of 1B charger outage.
When completing instructions, steps are to be completed in exact order or damage to battery chargers will occur.
Holds shall be placed as required in accordance with procedure A-36.
4.6 Any replacement parts installed shall be requisitioned in accordance with procedure QC-801.
5.0 INSTRUCTIONS
5.1 Permission has been received from the Shift Foreman to perform maintenance and/or repair of 1B battery charger.
5.2 If Steps 5.3 thru 5.6 are to be completed, notify the Control Operator that a battery.charger failure alarm will be received.
5.2.1 Obtain key to padlock on Battery Charger Tie 1A1 to 1B1 switch in "A" Battery Room.
Shift Foreman Key Issue 5.3 Open the lAl battery charger 480 volt double throw disconnect (dual power feed from MCC 1K normal feed and MCC 1J emergency feed) in the lA battery room and place in the "Center - Off" Position.
OFF 5.4 Open and hold switch j/5 in the 1A battery main fuse cabinet-Section j/2.
5.5 Unlock padlock and close the lAl to 1Bl battery charger tie switch in the lA battery room.
CLOSED 5.6 Close the lA1 battery charger 480 volt double throw disconnect (dual power feed from MCC 1K - normal feed and MCC 1J emergency feed) in the 1A battery room to the MCC 1J emergency feed.
CLOSED NOTE:
The current may have to be balanced between the lA1 and 1B1 charger.
(To be done by electrician).
5.7 Notify the Control Operator that a battery charger failure alarm will be received.
5.8 Open and hold the 480 volt AC circuit breaker for the 1B battery charger on MCC 1D position 4 MM.
HELD 5.9 Open and hold the AC circuit breaker on the 1B battery charger.
HELD
- 5. 10 Open and hold switch jjl (lB battery charger) in the 1B battery main DC distribution panel Section I.
Shift Foreman will accept markup if required and log same in Hold Book.
MARK UP RECEIVED
M-38.7:3 5.12 Perform maintenance and/or repair as necessary with Westinghouse Instruction Book lB-20-300-05 as guide line.
NOTE:
See precaution 4.6.
MAINTENANCE COMPLETE Release markup, if applicable.
MARKED OFF 5.14 Remove hold and turn switch gl (1B battery charger) in the 1B battery main DC distribution panel - Section I to the "ON" position.
ON 5.15 5.16 5.17 5.18 Remove hold and turn the AC circuit breaker on the 1B battery charger to the "ON" position.
ON Remove hold and turn the 480 volt AC circuit breaker for the 1B battery charger on MCC 1D position 4MM to the "0¹'osition.
ON If Steps 5.18 thru 5.21 are to be completed, notify the Control Operator that a battery charger failure alarm will be received.
Open the lAl battery charge,480 volt double-throw disconnect (dual power feed from MCC 1K - normal feed and MCC lJ - emergency feed) in the lA battery room and place in the "Center-Off" position.
OFF 19 Open the lA1 to 1Bl battery charger tie switch in the lA battery room and lock open.
LOCKED OPEN Return key to Shift Foreman for padlock on battery charger Tie IA1 to 1B1 switch in "A" Battery Room.
Key Received by Shift Foreman 5.20 Remove hold and turn switch 7/5 in the 1A battery main fuse cabinet - Section 2 to the "ON" position.
ON 5.21 Close the lAl battery charger 480 volt double-throw disconnect (dual power feed from MCC lK normal feed and MCC 1J - emergency feed) in the lA battery room to the MCC 1K normal position.
CLOSED NOTE:
Charger currents may have to be balanced.
(To be done by electrician).
5.22 Complete list of maintenance performed, purchase order number of parts used - if any and attach to procedure.
COMPLETED BY:
DATE COMPLETED:
ELECTRICIAN FOREMAN:
SHIFT FOREMAN:
PORC REVIEW DATE:
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