Typical winter decommission and maintenance tasks
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Component Typical decommissioning and winter maintenance tasks needed prior to spring startup 1
Source Area/Collection Surface *Clean residual de-icing material (sand, salt) from pavement prior to spring startup
Collection System *Drain and disconnect conveyances to prevent freeze/thaw damage
Storage System *Drain all water from above-ground outdoor storage tanks
  • Disconnect downspouts and/or pipe upstream of the tank to prevent rainwater/snowmelt from entering the tank during winter months
  • Disconnect electrical supply that controls equipment
  • Shut off makeup water supply to prevent water from entering the tank
Treatment System *Drain and disconnect any pre-storage treatment devices that should be decommissioned during the winter
  • Decommission treatment system components per manufacturer’s guidelines
Distribution System *Switch end use supply from harvested water to public water supply (if necessary)
  • Drain all water from pumps and conveyance to prevent freeze/thaw damage
  • Disconnect electrical supply to the pump and control equipment
  • Complete all recommended winter maintenance for pumps and controls
Overflow/Bypass Systems *Drain and disconnect to prevent freeze/thaw damage

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