WorksheetsPPT 9 - Install and test systems and components
Total questions: 28
Worksheet time: 14mins
What is one of the requirements for a plumbing system after installation?
It must be painted.
It must be sound (no leaks).
It must be expanded.
It must be insulated.
What does "flushed through" mean in the context of plumbing?
Painted externally
Cleaned internally
Expanded in size
Insulated properly
What does "disinfected" refer to in plumbing system testing?
Mechanically cleaned
Painted with a sealant
Chemically cleaned
Expanded for more capacity
What does "commissioned" mean in the context of plumbing?
Set up correctly
Painted and sealed
Expanded and insulated
Mechanically adjusted
What is the first step in the testing process?
Visual inspection
Soundness test
Deccomission
Flushing out
Which step comes immediately after the soundness test in the testing process?
Visual inspection
Flushing out
Disinfecting
Hand over to customer
What is the final step in the testing process before handing over to the customer?
Commissioning
Visual inspection
Soundness test
Flushing out & Disinfecting
What should you visually check for before conducting a soundness test in plumbing?
Open ends, soldered joints, compression joints, and clips
Water pressure, pipe color, and temperature
Pipe length, diameter, and material
Electrical connections and insulation
What is the first step in soundness testing for rigid pipes according to BSEN806?
Attach the hydraulic test bucket.
Slowly fill the system with water.
Pump the system up to 1.5 x working pressure.
Check for any pressure drop.
How long should the system be left to stand for temperature stabilisation during soundness testing?
15 minutes
30 minutes
45 minutes
60 minutes
What should be done if a pressure drop is detected during the soundness test?
Ignore it
Increase the pressure
Rectify and retest
Reduce the pressure
To what pressure should the system be pumped during the soundness test?
1.0 x working pressure
1.2 x working pressure
1.5 x working pressure
2.0 x working pressure
What is the first step in the soundness testing of a plastic pipe (polybutylene)?
Pump the system to 1 bar.
Slowly fill the system with water.
Check for pressure loss.
Increase pressure to 1.5 x working pressure.
After how many minutes should you check for loss of pressure when the system is pumped to 1 bar when testing Polybutylene?
30 minutes
60 minutes
45 minutes
15 minutes
What should be done after increasing the pressure to 1.5 x working pressure?
Walk around the system and check for leaks.
Reduce pressure to one third.
Check for pressure loss.
Slowly fill the system with water.
Why is it important not to damage the plastic pipe or O rings during the test?
To ensure the system is filled with water.
To maintain the integrity of the system.
To increase the pressure effectively.
To reduce the pressure to one third.
How long should you leave the system before inspecting for pressure loss again in Test B Polybutylene?
30 minutes
60 minutes
90 minutes
120 minutes
What is considered a good soundness result in Test B for plastic pipes?
Total loss is less than 0.5 bar.
Total loss is less than 0.3 bar.
Total loss is less than 0.2 bar.
Total loss is less than 0.1 bar.
What is the first step in flushing and disinfecting a new pipe system?
Refill the system.
Open the kitchen tap.
Refilled the system with water and then drain it down from the lowest point.
Add disinfectant to the system.
How long should disinfectant be added to the system according to BSEN806?
30 minutes
1 hour
2 hours
3 hours
Which disinfectant is mentioned for use in the system?
Sodium chloride
Sodium hypochlorite solution or chlorine
Hydrogen peroxide
Ammonia
What should be done after a soundness test?
Test chlorine levels.
Drain the system.
Flush the system out.
Add more chlorine.
According to the document, what standard is used for testing chlorine levels?
ISO9001
BSEN806
ASTM123
DIN500
Which of the following is tested at outlets during the commissioning process?
Temperature
Pressure
Insulation
Support
What does a correct installation prevent?
Bacterial growth, legionella, and noise
Mold, rust, and electrical faults
Dust accumulation, rust, and noise
Electrical faults, mold, and bacterial growth
What is a cause of bacterial growth in installations?
Excessive heat
Stagnation or light
High pressure
Low humidity
At what temperature range does legionella thrive, as stated in British Standards and Water Regulations?
10–30ºC
20–460ºC
50–100ºC
5–25ºC
What type of noise is prevented by correct installation?
Water Driver
Water Grips
Water Hammer
Water Ringing
