Assessor Resource

DEFDV007B
Dive using closed-circuit breathing apparatus (HeO2) in open water to a maximum depth of 60 metres

Assessment tool

Version 1.0
Issue Date: April 2024


As agreed in the creation of this Training Package, applications for units transferred from the PUA00 Public Safety Training Package will be developed as part of continuous improvement plans, and taking into account the change in Unit of Competency format as detailed in templates for Streamlined Training Packages.

This unit covers the competency required to dive using closed-circuit breathing apparatus (CCBA) (HeO2) in an open water environment to a maximum depth of 60 metres.

This unit specifically covers those aspects of performance unique to CCBA (HeO2), such as operating the HeO2 compressor/hand-booster pump, inspecting and operating CCBA (HeO2) equipment, and conducting CCBA (HeO2) specific contingency drills.

This unit also includes the HeO2 standby diver responsibility of mid-water casualty handover.

You may want to include more information here about the target group and the purpose of the assessments (eg formative, summative, recognition)

Prerequisites

DEFDV001B Dive using self-contained underwater breathing apparatus in open water to 30 metres .

SISOSCB307A Inspect and fill SCUBA cylinders.

Employability Skills

This unit contains employability skills.



Evidence Required

List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.

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 in-water checks

handle non-functional equipment items

prepare equipment for the dive including charging of cylinders

maintain equipment during the dive

refurbish equipment post-dive

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

HeO2/air standby diver mid-water casualty handover drill.

Consistency in performance

Competency will be demonstrated over a minimum of 4 dives with the diver diving to a depth not greater than 60 m using CCBA (HeO2) in open water that includes the following requirements:

oceans, seas, lakes and rivers

day and night

sub-surface conditions:

a range of surface and sub-surface hazards

current (0–2 knots)

temperature (0 degrees +)

visibility (0 metre +)

Table 1 (below) outlines the minimum dives required by this Unit of Competency.

Table 1

Condition

No of Dives

In-water time

Remarks

Between 060m

4

60 min

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 diver’s vocational focus.

Specific resources for assessment

Access to complete range of CCBA (HeO2) diving, safety and accessory equipment.

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assingnment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)

Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

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 (HeO2)

identify distress and illness in others at depth

inspect and prepare CCBA (HeO2)

monitor CCBA (HeO2) equipment and gauges

recover and clear mask and mouthpiece

refurbish CCBA (HeO2) post-dive

Required Knowledge

CCBA (HeO2) dive equipment characteristics and limitations

CCBA (HeO2) characteristics and limitations

dive physics

dive physiology and medicine

general occupational/diving safety awareness

hazards of Heliox

marine animal threats

marine hazards

oceanography

relevant references and Australian Standards

safe operating ranges for air-supplies

standby diver responsibilities

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

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Compressor and associated equipment are inspected for serviceability. 
Protective equipment is fitted. 
Leads and hoses are connected to the compressor. 
Gas cylinders are charged to maximum working. 
Operator level maintenance is performed on the compressor. 
Compressor is de-serviced after use. 
CCBA (HeO2) is selected, inspected for serviceability, and fitted and tested (both out of water and in-water). 
Dives are conducted using CCBA (HeO2) and dive contingencies are demonstrated. 
Mid-water casualty handover is conducted between an HeO2 standby diver and an air standby diver. 
CCBA (HeO2) is de-serviced and defects are reported in accordance with organisational procedures. 

Forms

Assessment Cover Sheet

DEFDV007B - Dive using closed-circuit breathing apparatus (HeO2) in open water to a maximum depth of 60 metres
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

Feedback to student

 

 

 

 

 

 

 

 

Assessor name:

Signature:

Date:

Assessment Record Sheet

DEFDV007B - Dive using closed-circuit breathing apparatus (HeO2) in open water to a maximum depth of 60 metres

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

Date: