ML20072J903

Rev 1 to Svc Water Pump Rotating Assembly Removal & Installation

ML20072J903
Person / Time
Site:	Shoreham File:Long Island Lighting Company icon.png
Issue date:	02/03/1983
From:	GOULD, INC.
To:
Shared Package
ML20072J835	List: ML20072J833 ML20072J850 ML20072J877 ML20072J888 ML20072J895 ML20072J903 ML20072J910 ML20072J916 ML20072J922
References
35.122.01, NUDOCS 8303300255
Download: ML20072J903 (7)

Text

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Sp Number _ 35.122.01 Revision 1 Date Eff. y /f3 TPC TPC TPC SERVICE WATER PUMP ROTATING

.n ASSEMBLY REMOVAL AND INSTALLATION v\

1.0 PURPOSE To describe the the steps Service Water Pump.necessary to remove and reinstall the rotating assembly of 2.0 RESPONSIBILITY The Maintenance impleeentation of Engineer shall be responsible for ensuring the proper this procedure.

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3.0' DISCUSSION 3.1 The service water pumps (IP41*P-003A/B/C/D) are 2 stage, vertical,

./ centrifugal wet-pit type pumps driven by individual electric motors. They 7 are located at El. 20 f t - f in. in the Screenwell. The punps take a (d auction on the intake canaI and discharge through strainers to supply cooling water to the turbine building closed loop cooling water, residual heat removal, and reactor building standby ventilation system. control room air conditioning and main ventilation chilled water chiller condensers, and the circulating water pump bearing and emergency diesel generator coolers . <1 3.2 '

The following procedures are provided to ensure proper maintenance of the service water pumps (excluding motors) and are intended to be used either as independent procedures or together:

_ Pare 8.1 Packing Replacement and Adjustment 3 8.2 Driver Removal 3

8.3 Driver Installation 4 8.4 Puep Rotating Element Disassembly and Reassembly 5 8.5 Returning the Pu=p to Service 6

4.0 PRECAUT10':S 4.1 Care should be taken when pump internals are exposed or when the screenwell pit is open to prevent foreign material from entering the pucp casing or '

screenwell pit and which could be left there after maintenance is complete.

4.2 After the service water pump is recoved from the screensell. the pump hole shouldthrough falling be covered the with wood (or suitable cover) to prevent personnel from opening.

4.3 Care on it.should be taken when lifting the pump to ensure that no strain is put Jerking or dropping the punp =ay effect pump align =ent. When lif ting the ensure thatpump and moving it from vertical to horizontal positions, bending of the there is adequate support for the bowls and colu=n to prevent pump.

5.0 PREREOUISITES 5.1 Faintenance Work Request 5.2 Station Eauipment Clearance Per=1t 5.3 laydown space for the motor and rotating element of the pump should be available around the screenwell building.

5.4 In order to disconnect and reconnect the pump column and bowl seismic restraints within the service water pit, the associated screenwell pit will have to be dewatered.

5.5 Equipeent Pumps. History Forn SPF31.f01.01-!.0D Vertical Centrifugal

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(- SP35.122.01 Rev. 1 Page 2

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5.6 Riggin:: cauip ent (crenas. slings, occ.) should be inspected to ensure that they are in a safe condition for use.

'm 1 5.7 Cleanliness requirenents shall be establist ed in accordance with SP 12.923.01, Station Housekeeci: z.

<1 6.0 LIMITATIONS AND ACTIONS 6.1 Allowable 11.1.

puap out of service time shall be in accordance with Reference 7.0 M_ATERIALS OR TEST EC"IP:ENT 7.1 Mobile crane capable of the following:

Lif t capacity - 12 tons with a radius of later ft.

Lif t height above screenwell roof - 32 f t.

7.2 Wire rope slings (matched) 7.3 Shackles 7.4 L%iversel dial indicator set 0-50-0 7.5 l Wood bloc.ks and materials on which to set the motor and pump parts during disassembly.

7.6 Two - 3 ton chain hoists 8.0 _ PROCEDURE Component ID No. Initials MWR/PM No.

Pu=p Serial No._ Motor Serial No.

Conducted by: Date 8.1 Packing Reelace ent and Adiustrent 8.1.1 Ensure the prerequisites of Section 5.0 have been met.

and the appropriate caterials cr test equiprent in Sectica 7.0 are available.

8.1.2 Replacerent of packing and adjustments should be performed in accordance with the Stuffing Box Assembly Section of Reference 11.2.

8.1.3 Coat the packing studs with a sc:all amount of grease or (DV SP35.122.01 Rev. 1 Page 3

lubriccnt citar caintcennco to prsvsnt the from becesing fculed er c:rred2d.

8.1.4

'g--) If no other naintenance is to be perforced and work has been recorded on the Equipment History fors, notify the Q Maintenance Foreeah that maintenance is complete.

8.2 Driver Renoval 8.2.1 Ensure the prerequisites of Section 5.0 have been met, and the appropriate materials or test equipment on Section 7.0 are available.

8.2.2 Remove the following electrical leads from the service water pump motor and tag them for identification and location during reassembly:

1. Motor power leads to main terminal box.

2. Power leads to space heater.

3. Bearing temperature detector leads.

4 Stator RTD leads.

5. Vibration monitor lead (s).

8.2.3 Disconnect the motor ground cable.

8.2.4 Record the "As Found" pu=p coupling clearance between the pump-end adjusting nut and the motor driving half and disconnect the pu=p coupling. Record "As Found"

.- alignment data on the Equip:ent History Form.

8.2.5 Remove the bolts attaching the motor to the motor support head and any align =ent pins that may be installed.

8.2.6 Attach rigging to the lifting lugs mounted on the top of the motor housing, and re=ove the motor frc= the support head.

8.2.7 Set the motor in an upright position on suitable blocking.

CAUTION:

The motor shaft extends 7 in. below the mounting surface. Ensure that blocking is hi hF enough to prevent damage to the shaft.

8.3 Driver Installation 8.3.1 Replace motor on the support head in accordance with the sections of Reference 11.2 which cover motor installation SP35.122.01 Rev. 1

(. Page 4

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c cnd ccupling instellation.

8.3.2 Reconnect and alien the punp coupling in accordance viht Reference 11.2 sections which cover the flanned coupling and aligneent. Record final alighnent data on the Equipment History Form.

8.3.3 Replace the following electrical leads on the service water punp. Ensure proper replacement of leads by matching tags:

1. Motor power leads to the main terminal box.

2. Power leads to the space heater.

3. Bearing temperature detector leads.

4. Stator RTD leads.

5. Vibration monitor lead (s) 8.3.4 Replace the motor ground cable.

8.3.5 Check for proper power lead placement using a motor rotation tester. Rearrange leads for proper rotation if necessary.

8.3.6 Notify the Maintenance Fore =an or his assigned alternate that all work is co=pleted and that Section 8.5 may be conducted.

8.4 Puno Rotatine Elenent Disassenb1v and Reassenbly

()N 8.4.1 Ensure prerequisites of Section 5.0 have been met, and k ,)

m the appropriate caterials or test equipcent in Sectin 7.0 are available.

8.4.2 The service water pump motor has been recoved in accordance with Section 8.2.

8.4.3 Disconnect the discharge and seal water piping.

8.4.4 With the screenwell dewatered. re=ove the seismic restraints on the pu=p pipe column and bowls.

8.4.5 Renove pu=p from the screenwell pit and locate in laydown area for further disassembly per Reference 11.2.

8.4.6 After the pump has been renoved, the pdep mounting plate opening should be covered to prevent equipment and/or debris from entering the screenwell pit and adequate personnel safety precautions taken.

8.4.7 Disassenble the pu=p and rotating element in accordance with the appropriate sections of Reference 11.2. Record the "As-Found" conditions on the Maintenance History SP35.122.91 Rev. 1 Pare 5

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8.4.8 Conduct necessary rework to.the pump parts and or replace

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parts as required. If necessary, perform repairs in accordance with SP 31.017.91. Soeeisi Rerairs and Testine.

8.4.9 Reassemble the pump rotating assembly and pump case in accordance with Reference 11.2.

8.4.10 Reinstall pump into the screenwell pit reassemble the stuffing box and replace the pump motor per 8.3.

• 8.4.11 Replace the seisnic restraints on the pump pipe column and bowls and reconnect the discharge and seal wate rpiping.

8.4.12 Af ter the pump and motor have been reinstalled and the Equipment History Form is completed, notify the Maintenance Forenan that Seciton 8.5 may be conducted.

8.5 Returninz the Pump to Service 8.5.1 Check the screenwell pit clear of foreirn material if dewatered or the pump was removed.

8.5.2 Check the cotor thrust bearing oil levels and fill to the proper level, if required.

8.5.3 Turn the puep shaft by hand, using a strap wrench, to

) ensure freedom of rotation.

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8.5.4 Check that the motor housing ventilatin ports are clear.

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1 SP35.122.01 Rev. 1 Page 6

8.5.5

, Return the scracnwell pit to its normal cpercting  !

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8.5.6 Monentarily energize motor to check direction of g( - rotation.

Switch motor leads if necessary to achieve proper direction of rotation.

8.5.7 Check the pump packing gland and adjust for proper leakoff after the pump is operating. ,

9.0 ACCEPTANCE CRITERIA 9.1 Measured clearances are within the following limits:

1. Coupling Aligneent = .002"

2. Pump and Motor Float = 1/2 total float

3. Wear Ring Clearances = .625" max.

4. Shaft Runout = .9005" per ft.

10.0 FINAL CONDITIONS 10.1 Remove tools, rigging, and trash from the work area.

10.2 Equipment History Form and procedure submitted to Maintenance Engineer for review and filing in accordance with SP 31.002.01, Maintenance Record System.

<1 10.3 Statien equipment clearance tags removed.

10.4 Maintenance Engineer Review Date

11.0 REFERENCES

11.1 Technical Specifications, 5/21/76. Section 3.7.1 11.2 Binghan-Williatette Company, Type VM Size 16 x 26c, Multi-STaza Vertical Pu=ps, Wet Pit VCM & VTM. Installation, Operation, and Maintenance Procedures. File Code IP41.110.

<l 12.0 APPENDICES N/A SP35.122.91 Rev. 1 (0 Page 7

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