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22 Cards in this Set

  • Front
  • Back

A respiratory hazard occurs in a compartment as a result of one or a combination of two conditions being present?

Depletion of oxygen

Toxic atmospheric contaminates

What process can cause oxygen depletion?


Rust formation

Inert gas

Atmospheric contaminates can arise from a variety of sources and come in 2 forms.


Gasses or vapours

What are 5 examples of potential sources for a toxic hazard?


Heating of metals

Slow chemical reaction

Evaporation of volatile liquids


What compartments or areas would you most likely find hydrogen sulphide?

Ships, sewage treatment plants, bilges, sludge tanks, and other associated pipework.

What actions are required upon the discovery of a toxic hazard?

Raise the alarm, Don occaba, evacuate closing all doors and hatches behind you. Continue raising alarm until it has reached the bridge.

What are the main fixed and portable gas detection equipment used in the RAN?

Impact pro

Impulse XT

Gas commander 400

Gas commander 800


What four gasses does the portable 4 gas detector detect?



Hydrogen sulphide

Carbon monoxide

Expand OCCABA.

Open circuit compressed air breathing apparatus

Expand ELSRD.

Emergency life support respiratory device

What causes Olfactory Fatigue?

Hydrogen sulphide

What is the order you read the portable 4 gas detector?

Left to right, top to bottom.

What are the limits of the portable 4 gas detector?


5, 10, 20 LEL

Hydrogen sulphide:

10, 15, 20 LEL

Carbon monoxide:

25, 100, 200 ppm


18, 19.5, 23.5%

What gas does the single gas detector detect?

Hydrogen sulphide

What is the name, equipment carried and task of TEAM 1?

Casualty location and search.

2 personnel, intermediate rig, 2x ELSRD, comms.

Straight to scene, spiral out looking for casualties.

What is the name, equipment carried and task of TEAM 2?


2 personnel, intermediate rig, 2x ELSDR, comms, impact pro.

Spiral in, searching for casualties and taking gas readings. Meet up with team 1 and handover the 5 things.

What are the 5 things team 1 and team 2 handover?

Compartments searched

Number of casualties

Location of casualties

Time bagged

Gas readings

What is the name, equipment carried and task of TEAM 3?

Casualty evacuation.

2 personnel, intermediate rig, 2 ELSRD, comms.

Straight to casualty, re bag, evacuate casualty.

What is the name, equipment carried and task of TEAM 4?


2 personnel, intermediate rig, comms, impact pro.

Straight to source, repair and recommission machinery.

What are the roles of the scene leader during a toxic hazard incident?

Team coordination and control.

Maintain gas boundary.

Under direct control of DCC.

What is the minimum rig to be worn inside a gas boundary?

Intermediate rig.

State the acronym SHARP.

S - Secure charging hose when not in use

H - Hand over grip on crank handle

A - Avoid exposing bare skin to filter drain

R - Refuel only when stopped

P - PPE to be worn