© Water Systems Optimization, Inc TAUD Utility Technology Conference Frequently Asked Questions in Leak detection, Distribution System Testing and Water Audits Paul V. Johnson, P.E. Water Systems Optimization

© Water Systems Optimization, Inc Leak Detection Which of the following can interfere with sonic leak detection? A. Pump Stations B. Electrical Transformers C. Pressure reducing valves D. Old VW Buses E. All of the above

© Water Systems Optimization, Inc Leak Detection Which of the following can interfere with sonic leak detection? E. All of the above

© Water Systems Optimization, Inc Leak Detection True or False: There are some systems where all leaks come to the surface.

© Water Systems Optimization, Inc Leak Detection True or False: There are some systems where all leaks come to the surface. False

© Water Systems Optimization, Inc Leak Detection True or False: If you dig down to the top of the pipe without finding water, there is no leak possible at that location.

© Water Systems Optimization, Inc Leak Detection True or False: If you dig down to the top of the pipe without finding water, there is no leak possible at that location. False

© Water Systems Optimization, Inc Leak Detection True or False: Opening a fire hydrant too quickly can cause a water hammer that can break a water main.

© Water Systems Optimization, Inc Leak Detection True or False: Opening a fire hydrant too quickly can cause a water hammer that can break a water main. False

© Water Systems Optimization, Inc Leak Detection True or False: Closing a valve too quickly can cause a water hammer that can break a water main.

© Water Systems Optimization, Inc Leak Detection True or False: Closing a valve too quickly can cause a water hammer that can break a water main. True

© Water Systems Optimization, Inc Leak Detection True or False: Valves and fire Hydrants will not break if they are operated properly.

© Water Systems Optimization, Inc Leak Detection True or False: Valves and fire Hydrants will not break if they are operated properly. False

© Water Systems Optimization, Inc Leak Detection Which of the following can cause a missed correlation when using a leak correlator? A. Consumption B. Wrong Size of pipe C. Wrong pipe material D. All of the above

© Water Systems Optimization, Inc Leak Detection Which of the following can cause a missed correlation when using a leak correlator? D. All of the above

© Water Systems Optimization, Inc Leak Detection Why should you always work past a leak until there is no noise when using a ground mic? A. May be more than 1 leak B. Bends and T’s give false indications C. Old patches give false indications D. All of the above

© Water Systems Optimization, Inc Leak Detection Why should you always work past a leak until there is no noise when using a ground mic? D. All of the above

© Water Systems Optimization, Inc Leak Detection True or False: Leaks sometimes make enough noise that they can be heard without using any amplifying equipment

© Water Systems Optimization, Inc Leak Detection True or False: Leaks sometimes make enough noise that they can be heard without using any amplifying equipment True

© Water Systems Optimization, Inc Leak Detection True or False: Water under pressure, coming out of a pipe at leak, can cut through steel (skin, bones, fingers).

© Water Systems Optimization, Inc Leak Detection True or False: Water under pressure, coming out of a pipe at leak, can cut through steel (skin, bones, fingers). True

© Water Systems Optimization, Inc Leak Detection True or False: Most valves (12-inch and smaller) are 2 or 3 turns per inch to close plus 3 turns to seat the gate.

© Water Systems Optimization, Inc Leak Detection True or False: Most valves (12-inch and smaller) are 2 or 3 turns per inch to close plus 3 turns to seat the gate. True

© Water Systems Optimization, Inc Leak Detection True or False: Normally, valves that close in a clock-wise direction, are called right-handed valves

© Water Systems Optimization, Inc Leak Detection True or False: Normally, valves that close in a clock-wise direction, are called right-handed valves True

© Water Systems Optimization, Inc Distribution System Testing True or False: Fire Flow tests can be run using just one (1) fire hydrant.

© Water Systems Optimization, Inc Distribution System Testing True or False: Fire Flow tests can be run using just one (1) fire hydrant. False

© Water Systems Optimization, Inc Distribution System Testing True or False: One 12-inch water main can carry approximately 4 times as much water as a 6-inch main.

© Water Systems Optimization, Inc Distribution System Testing True or False: One 12-inch water main can carry approximately 4 times as much water as a 6-inch main. True

© Water Systems Optimization, Inc Distribution System Testing True or False: When testing water meters, meter pits do not need to be tested for gas because gas cannot build up in a water meter pit.

© Water Systems Optimization, Inc Distribution System Testing True or False: When testing water meters, meter pits do not need to be tested for gas because gas cannot build up in a water meter pit. False

© Water Systems Optimization, Inc Distribution System Testing Loss of Head Tests can measure a mains “C” value to the nearest: A B. 0.2 C. 2.0 D. 20.0

© Water Systems Optimization, Inc Distribution System Testing Loss of Head Tests can measure a mains “C” value to the nearest: C. 2.0

© Water Systems Optimization, Inc Distribution System Testing A “C” value of less than 60 would normally be found on A. Cement lined cast iron pipe B. Unlined cast iron pipe C. Plastic pipe D. Ductile iron pipe

© Water Systems Optimization, Inc Distribution System Testing A “C” value of less than 60 would normally be found on B. Unlined cast iron pipe

© Water Systems Optimization, Inc Distribution System Testing For two adjacent fire hydrants, one at the top of a hill and one at the bottom of a hill, which one will have the highest “Water Level” (pressure plus elevation) under “no flow” conditions?

© Water Systems Optimization, Inc Distribution System Testing For two adjacent fire hydrants, one at the top of a hill and one at the bottom of a hill, which one will have the highest “Water Level” (pressure plus elevation) under “no flow” conditions? Both will be the same

© Water Systems Optimization, Inc Distribution System Testing If you are operating valves for a system test and you find a valve closed that should not be closed, you should A. Leave it closed B. Open it immediately C. Flush the main while opening the valve

© Water Systems Optimization, Inc Distribution System Testing If you are operating valves for a system test and you find a valve closed that should not be closed, you should C. Flush the main while opening the valve

© Water Systems Optimization, Inc Distribution System Testing True or False: When checking pressure on a fire hydrant, never stand in front of a hydrant cap.

© Water Systems Optimization, Inc Distribution System Testing True or False: When checking pressure on a fire hydrant, never stand in front of a hydrant cap. True

© Water Systems Optimization, Inc Distribution System Testing True or False: When running a pump efficiency test, the highest Total Dynamic Head is located at the shutoff point for the pump.

© Water Systems Optimization, Inc Distribution System Testing True or False: When running a pump efficiency test, the highest Total Dynamic Head is located at the shutoff point for the pump. True (?)

© Water Systems Optimization, Inc Distribution System Testing True or False: Pumps can never be run against a closed valve without causing damage to the pump.

© Water Systems Optimization, Inc Distribution System Testing True or False: Pumps can never be run against a closed valve without causing damage to the pump. False

© Water Systems Optimization, Inc Distribution System Testing Which 40 foot high standpipe would have the highest pressure at the bottom of the standpipe?: A. A 10-foot diameter standpipe B. A 20-foot diameter Standpipe C. A 40-foot diameter Standpipe

© Water Systems Optimization, Inc Distribution System Testing Which 40 foot high standpipe would have the highest pressure at the bottom of the standpipe?: Trick Question – They all would have the same pressure at the bottom of the Standpipe

© Water Systems Optimization, Inc Distribution System Testing Where is, normally, the best loca- tion for an elevated Storage tank? A. Close to the wtp/pump station B. As far from the wtp/pump station as possible C. At the low point in the distribution system

© Water Systems Optimization, Inc Distribution System Testing Where is, normally, the best loca- tion for an elevated Storage tank? B. As far from the wtp/pump station as possible B. As far from the wtp/pump station as possible

© Water Systems Optimization, Inc Water Audits True or False: One of the fastest ways to improve the “validity score” for a Water Audit is to properly test the production meters.

© Water Systems Optimization, Inc Water Audits True or False: One of the fastest ways to improve the “validity score” for a Water Audit is to properly test the production meters. True

© Water Systems Optimization, Inc Water Audits True or False: No estimated data should ever be used in a Water Audit

© Water Systems Optimization, Inc Water Audits True or False: No estimated data should ever be used in a Water Audit False

© Water Systems Optimization, Inc Water Audits Which of the following are important to know in designing a plan of intervention to reduce water loss? A. Infrastructure Leakage Index B. Real Losses vs Apparent Losses C. Economic Level of Loss D. All of the above

© Water Systems Optimization, Inc Water Audits Which of the following are important to know in designing a plan of intervention to reduce water loss? D. All of the above

© Water Systems Optimization, Inc Water Audits A very inexpensive Water Source will impact A. ILI B. Non-Revenue Water C. Economic Level of Loss D. All of the above

© Water Systems Optimization, Inc Water Audits A very inexpensive Water Source will impact C. Economic Level of loss

© Water Systems Optimization, Inc Water Audits Source meters should be tested for accuracy A. Every Six months B. Once a year C. Once every two years

© Water Systems Optimization, Inc Water Audits Source meters should be tested for accuracy B. Once a year

© Water Systems Optimization, Inc Water Audits True or False: A very abundant and inexpensive source of water can reduce the value of Real Losses

© Water Systems Optimization, Inc Water Audits True or False: A very abundant and inexpensive source of water can reduce the value of Real Losses True

© Water Systems Optimization, Inc Water Audits A consumer with large day flows and low night flows should be metered using a A. Turbo Meter B. Compound meter C. Venturi meter

© Water Systems Optimization, Inc Water Audits A consumer with large day flows and low night flows should be metered using a B. Compound Meter

© Water Systems Optimization, Inc Paul V. Johnson, P.E. Water Systems Optimization

© Water Systems Optimization, Inc Water Audits

© Water Systems Optimization, Inc Water Audits

© Water Systems Optimization, Inc Water Audits