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Elements and Performance Criteria

  1. Operate an HeO2 compressor/hand-booster pump
  2. Conduct dive operations

Required Skills

This describes the essential skills and knowledge and their level required for this unit

Required Skills

conduct buddy breathing

conduct ditching drills

conduct lost buddy drills

conduct unconscious companion diver drills

conduct standby diver drills

fit and check CCBA HeO

identify distress and illness in others at depth

inspect and prepare CCBA HeO

monitor CCBA HeO equipment and gauges

recover and clear mask and mouthpiece

refurbish CCBA HeO postdive

Required Knowledge

CCBA HeO dive equipment characteristics and limitations

CCBA HeO characteristics and limitations

dive physics

dive physiology and medicine

general occupationaldiving safety awareness

hazards of Heliox

marine animal threats

marine hazards

oceanography

relevant references and Australian Standards

safe operating ranges for airsupplies

standby diver responsibilities

Evidence Required

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessment must confirm the ability to

arrange for others to check equipment

conduct inwater checks

handle nonfunctional equipment items

prepare equipment for the dive including charging of cylinders

maintain equipment during the dive

refurbish equipment postdive

recover and clear mask and mouthpiece

safely enter and exit the water appropriate to the launch platform equipment and conditions

switch from primary to the reserve air system

implement contingency and emergency drills such as

ditching drills

buddy breathing

unconscious companion diver drills

HeOair standby diver midwater casualty handover drill

Consistency in performance

Competency will be demonstrated over a minimum of dives with the diver diving to a depth not greater than m using CCBA HeO in open water that includes the following requirements

oceans seas lakes and rivers

day and night

subsurface conditions

a range of surface and subsurface hazards

current knots

temperature degrees

visibility metre

Table below outlines the minimum dives required by this Unit of Competency

Table

Condition

No of Dives

Inwater time

Remarks

Between m

Between 060m

min

Total accrued subsurface time m

Total accrued sub-surface time (060m)

Context of and specific resources for assessment

Context of assessment

Competency will be assessed in the ocean over a range of oceanic diurnal and nocturnal environments supported by questioning on shore or aboard vessels

When practicable assessment should relate to the divers vocational focus

Specific resources for assessment

Access to complete range of CCBA HeO diving safety and accessory equipment


Range Statement

The Range Statement relates to the Unit of Competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording in the Performance Criteria is detailed below.

Open water environment may include:

day or night

oceans, seas, lakes and rivers

subsurface conditions:

current (0–2 knots)

visibility (0 metre +)

temperature (0 degrees +)

surface and subsurface hazards such as:

anchor drop zones

cathodic protection devices

electrical cabling

inlets and sonar/radio frequency hazards

marine animals

piers and jetties

pipelines

pollutants

propellers/thrusters

trapping hazards:

beams

culverts

gates

grottoes and caves

intakes and outfalls

nets

safety, anchor and communications lines

sewers

submerged ships, vehicles and structures

sluices

vessel rocking and associated movement

Associated equipment may include:

hoses

pumps

Protective equipment may include:

gloves

goggles

CCBA (HeO2) may include:

counter-lung

emergency cylinder

facemask /mouthpiece

HeO2 cylinder

scrubber material

Operator level maintenance may include:

checking existing pressure in cylinders with pressure gauge

conducting charging in (HeO2) clean environment

following correct charging procedure and charging rate operating high pressure charging panels

Dive contingencies may include:

buddy breathing

companion diver

flooded mask

fouled supply

hose blockage/choking

hose rupture

partial pressure anomalies

set to 40 bar

trouble drill