• AWWA DSS63724
Provide PDF Format

Learn More

AWWA DSS63724

  • Underwater Inspection and Repair of an Active Water Storage Basin Liner
  • Conference Proceeding by American Water Works Association, 09/01/2006
  • Publisher: AWWA

$12.00$24.00


The Philadelphia Water Department (PWD) employed divers and a remotely operatedunderwater vehicle to inspect, diagnose, and repair the polyethylene liner of a 150-million gallon water storage basin without draining the basin or removing it from service.Inspection of the basin was triggered when residual chlorine values in the basin effluentsamples were unexplainably lower than normal. Using a camera mounted on a remotelyoperated underwater vehicle inserted through a hatch in the floating cover, it wasdetermined that the polyethylene liner was torn in three critical locations. At the influentend of the reservoir, water was seeping under the bottom liner due to a large tear. Atthe two effluent locations, water underneath the liner was being drawn into the effluentpiping through two additional tears. Divers made repairs quickly with the reservoir still inservice to safely and effectively meet system water demands. Includes figures, appendix.

Related Products

AWWA ACE56362

AWWA ACE56362

Watershed Assessment Using Geographic Information Systems..

$12.00 $24.00

AWWA JAW21576

AWWA JAW21576

Journal AWWA - Evaluating Alternative Coagulants to Determine Efficiency and Cost Effectiveness ..

$15.00 $30.00

AWWA JAW48125

AWWA JAW48125

Journal AWWA - Considerations in As Analysis and Speciation..

$15.00 $30.00

AWWA ACE94279

AWWA ACE94279

Replacing Filters at a Water Treatment Plant: Making the Shoe Fit the Existing Treatment Process..

$12.00 $24.00