City of Norman

PROJECT PURPOSE

The existing influent pipe for the Water Treatment Plants eight filters is required to provide water from the clarifiers as part of the drinking water treatment process. The existing 42-inch pipe is steel and has shown signs of deterioration and has been repaired previously. However, due to the critical nature of this facility an in depth inspection to determine extent of deterioration followed by necessary repairs is necessary to keep the plant operational.

EVIDENCE

During upgrades to the treatment plant in 2016, contractors and staff found a large eroded hole at the top of the influent pipe. Staff repaired this hole by welding a piece of metal over the hole. In addition, multiple location of leaks and corrosion have been found since this repair. Due to the location of the pipe it?s difficult to determine the extent of the erosion, which is why an assessment is necessary. Pictures of some of the erosion are attached to this document.

POPULATION DESCRIPTION

All citizens in Norman will benefit from this project by continuing to allow the water to be treated properly by going through the filters following clarification. If more damage were to occur, it?s likely that the plant would need to be shut down, which could impact the amount of water citizens are able to use.

PERFORMANCE MEASURING

Once the project is complete, NUA will put the pipe back in service and monitor the integrity of the pipe to ensure it stays in good working condition.

ONGOING INVESTMENT AMOUNT

$

ONGOING INVESTMENT DESCRIPTION

None

ONGOING INVESTMENT REQUIRED

Able to continue operation without additional funding from the State of Oklahoma