Your CPD: Questions - Water supply and cylinders
1 Where might water supplied from a private supply come from (select all that apply)?
A: Trunk main
D: Cistern fed
2 If you take a water sample and get a reading of 4.2 on the pH scale, is this acidic or alkaline? (select your answer)
3 Limescale is found mostly in acidic or alkaline water? (select your answer)
4 Identify which cylinder has the thickest walls of copper.
A: Grade 1
B: Grade 2
C: Grade 3
5 Relating to the electromotive series, identify if copper is a Cathodic or Anodic. (select your answer)
6 Heated acidic water will have which impact on copper?
A: Speed up corrosion
B: Slow down corrosion
7 When installing a domestic hot water return pipe to the cylinder, what is the minimum allowable temperature upon returning to the cylinder?
A: > or = to 45oC
B: > or = to 50oC
C: > or = to 55oC
D: > or = to 65oC
E: none of the above
8 What temperature should you store a domestic hot water cylinder at?
A: 50oC to 55oC
B: 55oC to 65oC
C: 60oC to 65oC
D: 50oC to 65oC