ML20138K590

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Rev 2 to Pc 23,Part 5, Charging Pump Preventative Maint
ML20138K590
Person / Time
Site: Point Beach  NextEra Energy icon.png
Issue date: 01/25/1997
From:
WISCONSIN ELECTRIC POWER CO.
To:
Shared Package
ML20138K159 List: ... further results
References
PC-23, NUDOCS 9702190057
Download: ML20138K590 (10)
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NUCLEAR POWER BUSINESS UNIT PC 23 PART 5 OPERATIONS PERIODIC CHECKS NNSR o, Revision 2 1~ CHARGING PUMP PREVENTATIVE January 25,1997 e MAINTENANCE RECORD PROCEDURE YERIFIED CURRENT AND CHECvED FOR TEMPORARY CHANGES IF FIELD COPIES REQUIRED. USE PBF.00261AW NP 12 4 AND DO EQI COMPLETE T1US BLOCK BY: DATE:

1.0 fjlBPDjl To facilitate the following required preventative maintenance on the Unit I and Unit 2 charging pumps.

+ Charging pump accumulator checks (monthly)

+ Equalization of run hours (weekly)

+ Lubrication of vari-drive bearings (semi-annually)

+ Lubrication of vari-drive disc bushings (monthly)

+ Vari-drive exercises (weekly)

2.0 REFERENCES

IR 96-006, NRC Inspection Report; NRC Commitment for Operations procedures PMT/QC reviews.

NOTE: This is a comprehensiveprocedure and does not need to be completed all at one time, howeverfor system restoration each major section should be completedprior to stopping for the day.

3.0 PRECAUTIONS AND LIMITATIONS A minimum of two charging pumps are required to be operable per reactor plant IAW Tech Spec 15.3.2.B.1 One of the two operable charging pumps may be removed from service provided a charging pump associated with that reactor is restored to operable status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> per Tech Spec 15.3.2.D.l.

4.0 INITIAL CONDITIONS 4.1 RCS is not solid.

4.2 All three charging pumps available for service.

4.3 One charging pump running in manual and one running in auto.

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' , NUCLEAR POWER BUSINESS UNIT PC 23 PART 5

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OPERATIONS PERIODIC CHECKS NNSR Revision 2

.i ' CHARGING PUMP PREVENTATIVE January 25,1997

,q MAINTENANCE -

5.0 PROCEDURE NOTE: Charging pump accumulator checks and vari-drive disc bushing greasing are .

required only thefirst week of the month.

NOTE: Chargingpump vari-drive bearing greasing is only required thefirst week of January andJuly.

NOTE: Steps in thisprocedure may be marked N/A as determined by the DSS / DOS.

5.1 Identify the current pump lineup: i 4

Pump #1 Pump #2 Pump #3 Auto pump Manual pump Secured pump NOTE: If charging pump accumulator checks are not required then go to Step 5.23 and N/A Steps 5.2 through 5.22.

Section A: Secured Pumo (Pumn #3)

NOTE: Charging pump (Pung #3) will be considered inoperable during Steps 5.2 through 5.4 ofthisprocedure. Fire rounds not required, ifapplicable, ofisolatedforless ,

than 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.  !

5.2 Place the control switch in pullout.

5.3 Perform charging pump accumulator checks and vari-drive disc bushings per Appendix A.

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4 5.4 Grease the vari-drive bearings as required per Appendix B. (January and July only) 5.5 Start Pump #3 from Step 5.1 and Secure Pump #2 from Step 5.1 5.6 If vari-drive bearings were greased then replace grease drain plugs removed in 1 Appendix B after a five minute run time.

5.7 Cycle Pump #3 from minimum to maximum (>56 gpm), noting any abnormal noises or l conditions.

Section B: Manual Pumo (Pumo #2)

NOTE: Charging pump (Pump #2) will be considered inoperable during Steps 5.8 through i 5.10 of thisprocedure. Fire rounds not required, sf applicable, sfisolatedfor less i than Ihour.

5.8 Place the control switch in pullout.

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NUCLEAR POWER BUSINESS UNIT PC 23 PART 5 OPERATIONS PERIODIC CHECKS NNSR Revision 2 1 CHARGING PUMI PREVENTATIVE January 25,1997

- MAINTENANCE 5.9 Perform charging pump accumulator checks and vari-drive disc bushings per Appendix A.

5.10 Grease the vari-drive bearings as required per Appendix B. (January and July only) 5.11 Start Pump #2 from Step 5.1 and Secure Pump #1 from Step 5.1.

5.12 If vari-drive bearings were greased then replace grease drain plugs removed in Appendix B after a five minute mn time.

l PMT 5.13 Cycle Pump #2 from Step 5.1 from minimum to maximum (>56 gpm), noting any abnormal noises or conditions.

5.14 Place Pump #2 from Step 5.1 to auto.

SECTION C: Auto Pumo (Pump #1)

NOTE: Chargingpunsp (Pungp M1) will be consideredinoperable during Steps $15 through 517ofthisprocedure. Fire rounds not required, ifApplicable, sfisolated forless than I hour.

5.15 Place the control switch in pullout.

5.16 Perform charging pump accumulator checks and vari-drive disc bushings per Appendix A.

5.17 Grease the vari-drive bearings as required per Appendix B. (January and July only) 5.18 Start Pump #1 from Step 5.1 and Secure Pump #3 from Step 5.1. ,

5.19 If vari-drive bearings were greased then replace grease drain plugs removed in Appendix B after a five minute mn time.

I rmI 5.20 Cy:le Pump #1 from Step 5.1 from minimum to maximum (>56 gpm), noting any abnormal noises or conditions.

5.21 Start Pump #3 from Step 5.1 in manual.

i 5.22 Secure Pump #1 from step 5.1.

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NUCLEAR POWER BUSINESS UNIT PC 23 PART 5 OPERATIONS PERIODIC CHECKS NNSR .

Revision 2

{ CHARGING PUMP PREVENTATIVE January 25,1997 MAINTENANCE NOTE: IfSteps 5.2 through 5.22 wereperformed then N/A Step 5.23.

5.23 Shift Operating Charging Pumps:

5.23.1 Place Pump #1 to manual.

5.23.2 Place Pump #2 to auto.

5.23.3 Start Pump #3 in manual. ,

5.23.4 Secure Pump #1. 4 5.24 Place the preferred pump tags on the running pumps for the week of their scheduled runs.

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NUCLEAR POWER BUSINESS UNIT PC 23 PART 5 OPERATIONS PERIODIC CHECKS NNSR Revision 2

{ CHARGING PUMP PREVENTATIVE January 25,1997 e MAINTENANCE APPENDIX A CHARGING PUMP ACCUMULATOR PRESSURE CHECKS l i

NOTE: The charging pump must he secured and isolatedprior to checking its accumulators a pressures.

  • CAUTIONa IF THE UNIT IS AT POWER, THE LETDOWN GAS STRIPPER IS OFF-LINE, AND THE CHARGING PUMP DRAINS ARE NOT DIRECTLY PIPED TO THE PERMANENT DRAIN CONTACT HP PRIOR TO ISOLATING AND DEPRESSURIZING THE CHARGING PUMP

, (PER HP 2.5.2).

NOTE: Ensure Nitrogen bottle rigs arefastened to mounting brackets in the storage location after use.

1.0 Verify the control switch in pullout.

2.0 Isolate and depressurize the charging pump piping as follows:

2.1 Shut the discharge to charging line isolation.

2.2 Shut the discharge to seal injection isolation.

2.3 Shut the suction isolation.

2.4 Shut the relief to VCT isolation valve.

i *CAUTIONa OPENING THE SUCTION AND/OR DISCHARGE DRAIN VALVES RAPIDLY CAN CAUSE "P" TUBING SEPARATION AND PERSONNEL CONTAMINATION.

3.0 Open the discharge first off drain valve.

4.0 - Slowly open the discharge second of drain valve.

5.0 Slowly open the suction drain valve.

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NUCLEAR POWER BU2INES3 UNIT PC 23 PART 5 OPERATIONS PERIODIC CHECKS NNSR Revision 2

{ CHARGING PUMP PREVENTATIVE January 25,1997 MAINTENANCE 6.0 Check and Charge the discharge accumulators.

6.1 Remove the guard and cap from the accumulator bladder gas valve.

aCAUTIONa DO NOT OVER TIGHTEN FITTINGS ON THE ACCUMULATOR BLADDER VALVES. WHEN CONNECTING THE SWIVEL ,

CONNECTOR OF THE HOSE ASSEMBLY, HAND TIGHTEN  !

SUFFICIENTLY TO COMPRESS GASKET AND IN SWIVEL I CONNECTOR IN ORDER TO PREVENT GAS LEAKAGE. (DO NOT OVER TIGHTEN FITTINGS.)

6.2 Attach the charging gauge assembly to the accumulator gas valve. Ensure that the tee l handle on the assembly is backed-off to prevent depressing the accumulator bladder needle valve. Hand tighten sufficiently to compress gasket in swivel connector in order to prevent gas leakage. (Do not over tighten fitting.) ,

1 NOTE: Discharge accumulator nitrogen pre-charge pressure should be between 1150 and 1250psig.  !

6.3 Check the nitrogen pre-charge pressure by turning the tee handle inward to depress the accumulator bladder needle valve. Record the as found pressure on PBF-2109.

6.4 Recharge the accumulator as necessary. Record as -left pressure on PBF-2109, if required.

6.5 Remove the charging assembly and reinstall the guard and cap onto the accumulator 4

bladder gas valve.

7.0 Check Charge the Suction Accumulators.

I 7.1 Remove the guard and cap from the accumulator gas valve.

7.2 Remove the plug and 0-ring which seal the Schroeder valve.

7.3 Install the Schroeder valve brass extension.

7.4 Ensure the "T" handle on the low pressure charging gauge assembly is backed off fully. l l

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, NUCLEAR POWER BUS' NESS UNIT PC 23 PART 5 OPERATIONS PERIODIC CHECKS NNSR Revision 2 i CHARGING PUMP PREVENTATIVE January 25,1997 ,

MAINTENANCE aCAUTIONa DO NOT OVER TIGHTEN FITTINGS ON THE ACCUMULATOR BLADDER VALVES. WHEN CONNECTING THE SWIVEL CONNECTOR OF THE HOSE ASSEMBLY, HAND TIGHTEN SUFFICIENTLY TO COMPRESS GASKET AND IN SWIVEL CONNECTOR IN ORDER TO PREVENT GAS LEAKAGE.

7.5 Install the low pressure charging gauge assembly onto the brass extension.

NOTE: Suction accumulator nitrogen pre-chargepressure should be between 20 and 22 psig.

7.6 Check nitrogen precharge pressure by turning the "T" handle inward to depress the bladder needle valve. Record the as-found pressure on PBF-2109, if required.

7.7 Recharge the accumulator as necessary. Record as - left pressure on PBF-2109.

7.8 Remove the charging gauge assembly and Schroeder valve brass extension.

7.9 Reinstall the seal plug and 0-ring. Tighten 1/2 turn after seat contact.

7.10 Replace the accumulator valve guards.

aCAUTIONa ENSURE THAT THE CHARGING PUMP DISCHARGE VALVES ARE SHUT BEFORE SHUTTING THE SUCTION VALVE AND THAT THE SUCTION VALVE IS OPENED BEFORE OPENING DISCHARGE VALVES.

8.0 Return the charging pump to service as follows:

NOTE: Notify the Control Room that the charging pump will be valved in and a lab seal D/P alarm or sealinjectionfilter D/P alarm may come in. ,

8.1 Shut the suction drain valve.  !

8.2 Shut the discharge first and second off drain valves.

8.3 Lock open the relief to VCT isolation valve.

8.4 Open the suction isolation.

8.5 Open the discharge to seal injection isolation.

8.6 Open the discharge to charging line isolation.

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, NUCLEAR POWER BUSINESS UNIT PC 23 PART 5 OPERATIONS PERIODIC CHECKS NNSR Revision 2

( CHARGING PUMP PREVENTATIVE January 25,1997 MAINTENANCE 9.0 Lubrication of the Charging Pump Vari-Drive Disc Bushings.

NOTE: The vari-drive disc bushings zircfittings are on the west end of the upper shaft and the east end of the lower shaft, labeled #6 and # 7 on Appendit C There is a black plastic cap on the zire which corresponds to the black color ofAmoco Molylith #2.

9.1 Verify that the pump control switch is in pullout.

9.2 Pump 5 pumps of Amoco Molylith #2 grease into the vari-disc bushings. Grease the bushings on both the upper and lower shafts. Document on PBF-2109.  ;

NOTE: Each pump should be runfor approximately 5 minutes minimum to ensure thepump is operational (ie., nitrogen has not entered thepump).  ;

10.0 Start the pump to ensure pump operation.

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NUCLEAR POWER BUSINESS UNIT PC 23 PART 5 OPERATIONS PERIODIC CHECKS NNSR Revision 2

CHARGING PUMP PREVENTATIVE January 25,1997 MAINTENANCE APPENDIX B LUBRICATION OF THE CHARGING PUMP VARI-DRIVE BEARINGS NOTE
There are 5 zircfittings associated with the Vari-Drive Bearings. These are labeled #2, #3,
  1. 4, #5, and #8 on Appendix C and are covered with a redplastic cap (Amoco Rykon #2 is redin color).

NOTE: Grease may emitfrom grease drains during 5 minute ru:s.

1. Verify the Charging Pump control switch is in pullout.
2. Remove the Grease Drain plugs from each of the bearings on the motor and Vari-Drive.
3. Add 10 pumps of Amoco Rykon #2 to each of the grease fitting for the bearings. Document on PBF-2109.

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