Water Shuttle/Water Relay

Question 1

In a water relay, if a combination of LPP and appliance pumps are used, where should the LPPs be sighted?

Answer 1

Nearest to the water supply

Question 2

How would an insufficient flow when relaying be improved?

Answer 2

Shortening distance between pumps using more intermediate pumps

Or

Increasing the diameter of the hose used

Question 3

What does the distance between pumps in a relay depend on (list of 3)

Answer 3

The flow rate required
The diameter of hose lines between pumps
The contours of the relay route

Question 4

How many lengths of 70mm apart can intermediate pumps be on a relay?

Answer 4

8 lengths on flat ground

6 lengths on a 10% incline

Question 5

How many lengths of hoselayer 90mm apart can intermediate pumps be on a relay?

Answer 5

15 lengths on flat ground

12 lengths on an incline

Question 6

At what bar pressure should an intermediate pump supply the foreground pump?

Answer 6

2 bar pressure.

This can be increased upon request up to a maximum of 15 bar.

Question 7

The fireground pump operator must adjust the inlet valves to determine the correct flow and to try and maintain …(how much water in the Mark 3 flow meter)?

Answer 7

Between half and 3 quarters (when the autofill valve is fully open)