Diving Hazards

Question 1

Impressed current annodes

Answer 1

Switch off/no diving within 20m

Question 2

Boat propellers and thrusters

Answer 2

Engines not started until diver is clear of water
Divers briefed on engines and procedures
Dive supervisor confirm verbally that motors are off and isolated

Question 3

Pipelines

Answer 3

Check if it is free of any product
Check if site has ambient water pressure
Check all valves are isolated
Product must be known to protect divers

Question 4

Hazardous marine life

Answer 4

Produce contingency plans and risk assessment, have first aid gear on hand

Question 5

Water intake (delta P)

Answer 5

Establish there is no flow - hazardous location
Never assume
Check flow around valves with cloth (not hand)
Stand behind or to the side when opening valves (never in front)

Question 6

Surface hazards

Answer 6

Report all hazards (including near miss or breakages)
Ask for help
Be tidy and organised with gear