Testing and decommissioning of domestic hot water systems

Soundness Testing of Rigid Pipework (Copper and Steel). Select the correct pocess.

• •Slowly fill the system with water

  •Walk around system and check for leaks

  •Leave to stand for 60 minutes (temperature stabilisation)

  •Attach the hydraulic test bucket

  •Pump system up to 1.5 times the working pressure (if system works at 3bar it should be tested at 4.5bar etc)

  •Leave for one hour

  •Check for any pressure drop (no drop allowed)

  •Rectify and re-test if necessary

• •Slowly fill the system with water

  •Walk around system and check for leaks

  •Leave to stand for 30 minutes (temperature stabilisation)

  •Attach the hydraulic test bucket

  •Pump system up to 2.5 times the working pressure (if system works at 3bar it should be tested at 4.5bar etc)

  •Leave for one hour

  •Check for any pressure drop (no drop allowed)

  •Rectify and re-test if necessary

• •Slowly fill the system with water

  •Walk around system and check for leaks

  •Leave to stand for 30 minutes (temperature stabilisation)

  •Attach the hydraulic test bucket

  •Pump system up to 1.5 times the working pressure (if system works at 3bar it should be tested at 4.5bar etc)

  •Leave for one hour

  •Check for any pressure drop (no drop allowed)

  •Rectify and re-test if necessary

• •Slowly fill the system with water

  •Walk around system and check for leaks

  •Leave to stand for 30 minutes (temperature stabilisation)

  •Attach the hydraulic test bucket

  •Pump system up to 1.5 times the working pressure (if system works at 3bar it should be tested at 4.0bar etc)

  •Leave for one hour

  •Check for any pressure drop (no drop allowed)

  •Rectify and re-test if necessary

Soundness testing

Before soundness testing, always walk around the system to make sure all joints have been made – visual check:

• •Read MI

  •Soldered joints made

  •Open Compression joints

  •Clips are in place

• •Check for Open ends

  •Soldered joints made

  •Compression joints tight

  •Clips are in place

• •Open ends are open

  •Soldered joints made

  •Compression joints tight

  •Clips are in place

• •Open ends

  •Soldered joints made

  •Compression joints tight

  •Clips are removed

Place in the correct order.

• Final Check

  Set up equipment

  Visual Inspection

  Test Period

  Complete-Documentation

• Complete-Documentation

  Test Period

  Visual Inspection

  Set up equipment

  Final Check

• Set up equipment

  Visual Inspection

  Test Period

  Final Check

  Complete-Documentation

• Visual Inspection

  Set up Equipment

  Test Period

  Final Check

  Complet-Documentation

Select the correct soundness test process for Plastic Pipe (Polybutylene)

Test A

• •Slowly fill the system with water

  •Walk around system and check for leaks

  •Pump system to 1bar; after 45 minutes check for loss of pressure

  •Increase pressure to 1.5 times working pressure for 30 minutes

  •Check for pressure loss

  •Reduce pressure to one-third for a further 45 minutes

  •Check for pressure loss

  •You do not want to damage the plastic pipe or O rings.

• •Slowly fill the system with water

  •Walk around system and check for leaks

  •Pump system to 1bar; after 45 minutes check for loss of pressure

  •Increase pressure to 1.5 times working pressure for 15 minutes

  •Check for pressure loss

  •Reduce pressure to one-third for a further 45 minutes

  •Check for pressure loss

  •You do not want to damage the plastic pipe or O rings.

• •Slowly fill the system with water

  •Walk around system and check for leaks

  •Pump system to 1bar; after 45 minutes check for loss of pressure

  •Increase pressure to 1.5 times working pressure for 30 minutes

  •Check for pressure loss

  •Reduce pressure to one-third for a further 45 minutes

  •Check for pressure loss

  •You do not want to damage the plastic pipe or O rings.

• •Slowly fill the system with water

  •Walk around system and check for leaks

  •Pump system to 1bar; after 45 minutes check for loss of pressure

  •Increase pressure to 2.0 times working pressure for 15 minutes

  •Check for pressure loss

  •Reduce pressure to one-third for a further 60 minutes

  •Check for pressure loss

  •You do not want to damage the plastic pipe or O rings.

Select the correct process for Soundness Testing Plastic Pipe (Polybutylene)

Test B

• •Slowly fill the system with water

  •Walk around system and check for leaks

  •Pump system to manufacturer’s test pressure

  •Inspect the pressure loss after 30 minutes

  •Leave for a further 120 minutes

  •Inspect for pressure loss

  •If total loss is less than 0.5bar, soundness is good

  •You do not want to damage the plastic pipe or O rings

• •Slowly fill the system with water

  •Walk around system and check for leaks

  •Pump system to manufacturer’s test pressure

  •Inspect the pressure loss after 45 minutes

  •Leave for a further 60 minutes

  •Inspect for pressure loss

  •If total loss is less than 0.1bar, soundness is good

  •You do not want to damage the plastic pipe or O rings

• •Slowly fill the system with water

  •Walk around system and check for leaks

  •Pump system to manufacturer’s test pressure

  •Inspect the pressure loss after 30 minutes

  •Leave for a further 60 minutes

  •Inspect for pressure loss

  •If total loss is less than 0.2bar, soundness is good

  •You do not want to damage the plastic pipe or O rings

• •Slowly fill the system with water

  •Walk around system and check for leaks

  •Pump system to manufacturer’s test pressure

  •Inspect the pressure loss after 30 minutes

  •Leave for a further 120 minutes

  •Inspect for pressure loss

  •If total loss is less than 0.2bar, soundness is good

  •You do not want to damage the plastic pipe or O rings

Add disinfectant to a system (sodium hypochlorite solution or chlorine) for 1 hour

as prescribed in which, British Standard?

• BS1010 part 2

• BS6700

• BS EN 1175

• BS EN 6800

What is shown in the photo?

• Hydraulic Gas Boiler Test Equipment

• Flue Pressure Tester

• Hydraulic Pipe Pressure Tester

• Hydraulic Drain equipment

What test is being carried out in the photo shown?

• Volume Test

• Flow Test

• Capacity Test

• Water Temperature Test

What is another word that can be swapped for 'draw-off'?

• Tap

• Basin

• Drain

• Cylinder

What is shown in the photo?

• Isolation Valve

• Double Check Valve

• Drain Off Valve

• Straight Coupling Valve