Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

DEFWDV013 Mapping and Delivery Guide
Employ air-lift devices underwater

Version 1.0
Issue Date: April 2024


Qualification -
Unit of Competency DEFWDV013 - Employ air-lift devices underwater
Description
Employability Skills
Learning Outcomes and Application This unit specifies the skills and knowledge required to move submerged objects using air-lift devices.It includes preparing, selecting and inspecting air-lift bags appropriate to the lift, securing bags to the object and inflating bags to required buoyancy to manoeuvre object under control.This unit relates, in part, to existing standards in the Australian Diver Accreditation Scheme (ADAS).This unit applies to persons working as Defence Work Divers, but may apply to others working in this field.The skills and knowledge described in this unit must be applied within the legislative, regulatory and policy environment in which they are carried out. Organisational policies and procedures must be consulted and adhered to.Persons undertaking this unit work independently and perform specific tasks in a range of contexts that could be unpredictable.No licensing, legislative or certification requirements apply to this unit at the time of publication.
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.

As a minimum, assessors must satisfy applicable regulatory requirements, which include requirements in the Standards for Registered Training Organisations current at the time of assessment.

As a minimum, assessment must satisfy applicable regulatory requirements, which include requirements in the Standards for Registered Training Organisations current at the time of assessment.

Assessment must occur in workplace operational situations where it is appropriate to do so; where this is not appropriate, assessment must occur in simulated workplace operational situations that replicate workplace conditions.

Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.

Resources for assessment must include access to:

a range of relevant exercises, case studies and/or other simulations

relevant and appropriate materials, tools, air-lift equipment and personal protective equipment currently used in industry

ocean with a range of oceanic, diurnal and nocturnal environments

applicable documentation including organisational procedures, regulations, codes of practice, industry standards and operation manuals.

When practicable, assessment should relate to the diver’s vocational focus.
Prerequisites/co-requisites
Competency Field Work Diving
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities 		Slides
PPT 		Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Prepare for underwater air-lift operation
  • Identify and analyse load metrics and worksite data to determine specific requirements for air-lift bags
  • Develop a work plan consistent with dive plan
  • Select, inspect and prepare air-lift bags in accordance with manufacturer specifications and safe weight limits
  • Secure air-lift bags to/from dive site
  • Assess obstructions and other underwater hazards to determine risks and manage risk control measures in accordance with dive plan
       
Element: Operate air-lift devices
  • Secure air-lift bags to object’s lift point/s
  • Determine a safe work area, confirm location of other divers and nearby vessels and/or structures prior to commencing and during air-lift operation, in accordance with work plan
  • Inflate air-lift bags in accordance with work plan
  • Control buoyancy and movement in accordance with work plan
       
Element: Complete air-lift operations
  • Minimise environmental impact arising from work task and recover waste products
  • Carry out de-servicing and storage requirements for air-lift bags
       


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.

ELEMENTS

PERFORMANCE CRITERIA

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Prepare for underwater air-lift operation

1.1

Identify and analyse load metrics and worksite data to determine specific requirements for air-lift bags

1.2

Develop a work plan consistent with dive plan

1.3

Select, inspect and prepare air-lift bags in accordance with manufacturer specifications and safe weight limits

1.4

Secure air-lift bags to/from dive site

1.5

Assess obstructions and other underwater hazards to determine risks and manage risk control measures in accordance with dive plan

2

Operate air-lift devices

2.1

Secure air-lift bags to object’s lift point/s

2.2

Determine a safe work area, confirm location of other divers and nearby vessels and/or structures prior to commencing and during air-lift operation, in accordance with work plan

2.3

Inflate air-lift bags in accordance with work plan

2.4

Control buoyancy and movement in accordance with work plan

3

Complete air-lift operations

3.1

Minimise environmental impact arising from work task and recover waste products

3.2

Carry out de-servicing and storage requirements for air-lift bags

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria on at least one occasion and include:

applying centre of gravity of lifted object

applying relevant legislation, standards and organisational policies and procedures

applying underwater risk control measures and work plan requirements

controlling neutrally buoyant objects

coordinating with other operators during lift

demonstrating air-lift operations with manually inflated air bags including:

1 x vertical lift to surface

1 x lateral lift

determining hydrodynamics of object as it is raised through the water

developing underwater air-lift work plan

rigging and de rigging air-lift equipment.

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria and include knowledge of:

calculations to determination hydrodynamics, centre of gravity and mass of submerged objects

characteristics and employment of airlift bags

dive equipment

dive physics

dive physiology and medicine including:

heat and cold illnesses

compression illnesses

decompression illnesses

diving descent and ascent techniques

general diving safety awareness including:

diving in harbours

diving in tidal waters, currents and tides

diving on and/or near a ship’s bottom

lost/separated

entrapment/foul lines

marine animal threats

pollution/weeds

working in confined spaces

oceanography

relevant manufacturer specifications

relevant marine workplace hazards

relevant legislation, standards and organisational policies and procedures.

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, 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.

ELEMENTS

PERFORMANCE CRITERIA

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Prepare for underwater air-lift operation

1.1

Identify and analyse load metrics and worksite data to determine specific requirements for air-lift bags

1.2

Develop a work plan consistent with dive plan

1.3

Select, inspect and prepare air-lift bags in accordance with manufacturer specifications and safe weight limits

1.4

Secure air-lift bags to/from dive site

1.5

Assess obstructions and other underwater hazards to determine risks and manage risk control measures in accordance with dive plan

2

Operate air-lift devices

2.1

Secure air-lift bags to object’s lift point/s

2.2

Determine a safe work area, confirm location of other divers and nearby vessels and/or structures prior to commencing and during air-lift operation, in accordance with work plan

2.3

Inflate air-lift bags in accordance with work plan

2.4

Control buoyancy and movement in accordance with work plan

3

Complete air-lift operations

3.1

Minimise environmental impact arising from work task and recover waste products

3.2

Carry out de-servicing and storage requirements for air-lift bags

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Non-essential conditions may be found in the Companion Volume Implementation Guide.

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
Identify and analyse load metrics and worksite data to determine specific requirements for air-lift bags 
Develop a work plan consistent with dive plan 
Select, inspect and prepare air-lift bags in accordance with manufacturer specifications and safe weight limits 
Secure air-lift bags to/from dive site 
Assess obstructions and other underwater hazards to determine risks and manage risk control measures in accordance with dive plan 
Secure air-lift bags to object’s lift point/s 
Determine a safe work area, confirm location of other divers and nearby vessels and/or structures prior to commencing and during air-lift operation, in accordance with work plan 
Inflate air-lift bags in accordance with work plan 
Control buoyancy and movement in accordance with work plan 
Minimise environmental impact arising from work task and recover waste products 
Carry out de-servicing and storage requirements for air-lift bags 

Forms

Assessment Cover Sheet

DEFWDV013 - Employ air-lift devices underwater
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

DEFWDV013 - Employ air-lift devices underwater

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: