Spill Prevention Devices:
Single wall spill prevention equipment must be integrity tested at least once every three years or use a double-walled spill bucket monitored with an interstitial sensor.
Overfill Prevention Devices:
Overfill prevention equipment must be inspected for functionality at least once every three years.
Repair and Replacement:
If the device manufacturer does not have an approved method to repair the damaged or defective spill or overfill prevention device, the equipment must be replaced. Repaired or replaced spill and overfill prevention devices must be integrity tested or tested for functionality within thirty days of the repair or replacement.
Flow Restriction Overfill Devices (Ball Float Valves) cannot be repaired or replaced if found damaged or defective. Another method of overfill prevention must be installed within thirty days. (Automatic Shutoff Device or High-Level Alarm). If the ball float device is not removed and an automatic shutoff flapper valve is installed, the flapper valve must activate at 90%, and below the length of ball float piping in the tank.
Recordkeeping:
The spill and overfill test results must be maintained for three years.
Records for double-walled spill prevention monitored with an interstitial sensor must be maintained for as long as the equipment is in use. Conduct an integrity test within thirty days of discontinuing the interstitial sensor monitoring.
All post-repair and replacement testing must be conducted within thirty days and maintained for three years.
All repair documentation must be maintained for the life of the UST system.