Safe Working Near Water

Question 1

What are the characteristics of moving water?

Answer 1

Powerful - shallow amounts may have a large mass

Relentless - nature dictated

Predictable - paths, timings, volume

Question 2

Which part of a river is the fastest flowing on a straight?

Answer 2

On top in the middle

Question 3

Which part of a river will be fastest around a bend?

Answer 3

The outside

Question 4

What is a helical flow?

Answer 4

Part on the outside of the river that pushes you back into the main current

Question 5

What is the main current of a river also knows as?

Answer 5

Laminar flow

Question 6

Where is a safe place in a river?

Answer 6

In an eddy

Question 7

When would an eddy occur?

Answer 7

When the water flow is blocked something, it occurs immediately behind the blockage.

Question 8

What is a strainer?

Answer 8

A small blockage thar will let water through - it can trap people. E.g a tree

Question 9

What are the parts of a weir?

Answer 9

Face
Towback or backwash
Boil Line
Outwash

Question 10

What is the hierarchy of water rescue?

Answer 10

1. Talk
2. Reach
3. Throw
4. Row
5. Go/Tow
6. Helo