TEST BANK 10

What can you use as a substitute for soapy water when leak testing pipe during freezing weather?

• Pine oil

• Linseed oil

• Turpentine

• Petroleum jelly

When winterizing a system, what is the first step in draining a water system?

• Disconnect the unions

• Close the main shutoff valve

• Open the highest level faucets

• Loosen at the lowest connection

Which antifreeze solution should be your first choice when you are protecting fixture traps against freezing?

• Glycol

• Alcohol

• Glycerin

• Calcium chloride

When using a torch to thaw frozen pipes near wooden structures, you must isolate the area with a ?

• Wet rag

• Fire shield

• Heat shield

• Bucket of water

The best way to thaw short length of frozen pipe up to 1 Ω inches in diameter is to use?

• Torches

• Electric thawers

• Hot water and rags

• Rubber hose and funnel

What is the proper way to tighten bolts on a full circle clamp?

• Working from the center out

• Working from the outside in

• Tightening every other bolt

• The tightening sequences doesn’t matter

What type of repair clamp should be used as a temporary repair?

• Unions

• No hub clamps

• Compression coupling

• Emergency pipe clamp

When installing a compression coupling, why do you dig out the area to give you as much flexibility with the pipes?

• To allow for easy installation

• To check if the pipe has shifted

• To check if the water is shutoff

• To look for the cause of the break

In which order is a water main disinfected?

• Flushing, dosing, flushing, testing

• Flushing, dosing, testing, flushing

• Dosing, flushing, testing, flushing

• Dosing, testing, flushing, testing

What is the proper length of time and velocity for flushing a main?

• 10 minutes / 0.5 fps

• 15 minutes / 5.0 fps

• 20 minutes / 2.5 fps

• 30 minutes / 2.5 fps