13. mark wilmer pumping plant unit1.ppt board meeting/13... · mark wilmer pumping plant unit 1...
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Mark Wilmer Pumping Plant
Unit 1 Overhaul
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Scope of Work
• Upgrade Impeller to New Specification• Replace Upper and Lower Wear Rings• Refurbish Motor Stator Insulation• Repair Motor Rotor Pole Braces• Rebuild Unit Discharge Valve• Blast and Recoat Pump Diffuser• Blast and Recoat Pump Pit Liner• Recalibrate all Unit Instrumentation
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Unit 4 Disassembled
Stator Winding prior to clean and epoxy coating
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Machine Lower Wear Ring
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Blast and Coat Pump Diffuser
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Pump Diffuser Ring
Head Cover Bolts
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13.8 KV Stator Winding epoxy coating to extend insulation life and
improve High Voltage DC test results
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Machine major components
Pump Shaft 25,000 LBS
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Repaired ImpellerImpeller 14,900 LBS
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Head CoverImpeller
Rotor 231,000 LBS
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New Pump Impeller
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Rebuilt Discharge ValveRebuilt 54” Discharge Valve
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Pump Shaft
Impeller Bolts holes
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Preliminary Schedule• Unit disassembly to begin June 18th• Ship Impeller by July 9• Remove and rebuild discharge valve • Blast and coat the pump pit• Machine pump pit wear rings• Clean and coat motor stator and rotor • Unit assembly to begin by October 1• Unit assembly complete by November 12• Complete Unit Start-up Check list • Heat Run last week of November• Release for Operations by December 1