Testing and Decommissioning

The first step in soundness testing of rigid pipes is:

• Visual inspection

• Hydrostatic testing

• Ultrasonic testing

• Pressure testing

After filling the system with water, you should:

• Check for leaks

• Start the engine

• Drain the water

• Add more water

Fill in the blank: Pump system up to 1.5 times the _______ pressure.

• maximum

• minimum

• average

• standard

What should be done if there is a pressure drop during testing?

• Increase the pressure immediately

• Stop the test and check for leaks

• Ignore the pressure drop

• Continue testing at lower pressure

What is the first step in the soundness testing of plastic pipes (polybutylene)?

• Pump system to 1bar

• Slowly fill the system with water

• Increase pressure to 1.5 times working pressure

• Walk around system and check for leaks

During Test B, after how many minutes should you inspect the pressure loss initially?

• 15 minutes

• 30 minutes

• 60 minutes

• 120 minutes

Fill in the blank: After re-filling the system, open the kitchen tap and allow water to run until clear of ________.

• debris/colour

• air bubbles

• rust

• sediment

What is the first step in the flushing and disinfecting process?

• Identify the area to be disinfected

• Prepare disinfectant solution

• Flush the system with water

• Inspect the equipment

Pressure is checked according to the instructions by:

• using a pressure gauge

• listening for air leaks

• feeling for vibrations

• observing the pressure indicator

Fill in the blank: Open ends must be _______ during the decommissioning process.

• sealed

• opened

• ignored

• painted