Maintenance Service Levels for Sewerage Active Assets

Maintenance Service Levels for Sewerage Active Assets

Problem Intervention Level Remedy/Treatment Response Time
Collapsed Bearing Upon evidence of noise or vibration Replace bearing Dependent on operational criticality, within 2 weeks
Pump Mechanical Seal Failure When fluid escapes from seal Full Pump Refurbishment Dependent on operational criticality, between 1 day & 4 weeks
Sewer Pump Wear Ring Failure On 30% reduction in flow or repeat choking Replace wear rings Dependent on operational criticality, between 1 day & 2 weeks
Sewer Pump Housing Erosion Wall thickness is 50% of original Powdered metal rebuild Dependent on operational criticality, between 1 day & 2 weeks
Pump Gross Failure Vibration/Reduction in Flow Pump Refurbishment or Replacement Dependent on operational criticality, within 2 weeks
Bore Pump Failure Upon evidence of noise or vibration,loss of flow Pump Refurbishment or Replacement Dependent on operational criticality, between 2 weeks & 8 weeks
Gearbox failure Upon evidence of noise or vibration Refurbishment or Replacement Dependent on operational criticality, between 1 day & 4 weeks
Electric Motor Burn out Overload tripping or burning smell Rewind or replacement Dependent on operational criticality, between 1 day & 4 weeks
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