OFTEC Oil Pipework and Supply Systems 2

Question 1

What colour is MDPE (medium-density polyethylene) pipe approved for oil supply use in the UK?

Accepted Answer

Black

Answer

Blue

Answer

Yellow

Answer

Orange

Question 2

What is the minimum depth of cover required for buried oil supply pipework under a non-trafficked area such as a garden?

Accepted Answer

450mm

Answer

250mm

Answer

300mm

Answer

600mm

Question 3

What minimum depth of cover is required for buried oil supply pipework passing under a driveway or other trafficked area?

Accepted Answer

600mm

Answer

300mm

Answer

750mm

Answer

900mm

Question 4

Which type of joint is NOT suitable for use in buried oil supply pipework?

Accepted Answer

Soldered (capillary) joints on copper tube

Answer

Compression fittings on copper tube

Answer

Electrofusion joints on MDPE pipe

Answer

Mechanical compression fittings on MDPE pipe

Question 5

When oil supply pipework passes through a wall or floor, what protection must be provided?

Accepted Answer

A sleeve to protect the pipe and allow for thermal movement

Answer

Fire-resistant lagging around the pipe

Answer

A union fitting at each side of the wall

Answer

Bitumen paint applied directly to the pipe

Question 6

What is the maximum recommended length of flexible hose connection between the oil supply pipework and the burner?

Accepted Answer

500mm

Answer

250mm

Answer

750mm

Answer

1000mm

Question 7

Where should the body of a fire valve be positioned relative to the appliance room?

Accepted Answer

Outside or away from the area where fire could occur, with only the sensing phial inside the room

Answer

Inside the boiler room directly adjacent to the appliance

Answer

At the oil storage tank adjacent to the outlet valve

Answer

At the point where the oil supply enters the building