Assessor Resource

DEFDV013B
Employ air-lift devices underwater

Assessment tool

Version 1.0
Issue Date: July 2018


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 move submerged objects using air-lift devices (i.e. bags).

The unit includes selecting and inspecting the bags appropriate to the lift, securing the bags to the object and inflating the bags to the required buoyancy in order to manoeuvre the object under control. Attention must be given to safety of other divers and nearby vessels and/or structures during work, as well as consideration for the environment.

Note: This Unit of Competency relates, in part, to the existing standards of the Australian Diver Accreditation Scheme (ADAS). All information was correct at the time of development of this Unit of Competency; however, any diver seeking ADAS accreditation should consult ADAS and not rely on the information contained in this unit.

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.

DEFDV016B Perform underwater rigging work.


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 attend to personal and collective safety; and to consider the environmental impact as part of the dive plan.

Consistency in performance

Competency should be demonstrated during the following airlift operations with manually inflated airbags:

1 x vertical lift to surface

lift distance – at least 5 metres (object must breach surface)

depth – between 5 to 20 metres

weight – at least 250 kg

1 x lateral lift

lateral distance – at least 10 metres

depth – between 5 to 20 metres

weight – at least 250 kg.

Context of and specific resources for assessment

Context of assessment

Competency should be assessed in the ocean.

When practicable, assessment should relate to the diver’s vocational focus.

Specific resources for assessment

Access to a complete range of diving, safety and accessory equipment; airlift equipment; and submerged objects.


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

check equipment

control neutrally buoyant objects

inflate air-lift bags

inspect equipment for serviceability and functionality

planning

rig equipment

Required Knowledge

characteristics and employment of air-lift bags

determination of mass of submerged objects

dive equipment

dive physics

general occupational/diving safety awareness

marine hazards

oceanography

relevant references and Australian Standards

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.

Load metrics may include:

centre of gravity

composition

dimensions

lift points

weight

Worksite data may include:

current

depth

gradient

hazards

obstacles

Selecting, inspecting and preparing air-lift bags may include:

checking attachment lines and points

inspecting the neck

inspecting the outer skin

test fill

Action to remove/reduce the risk may include:

erecting signage

using patrol/sentry craft

Effectively controlling the object's movement may include:

both lateral and vertical adjustments

Environmental impact may include:

contamination of surrounding water (e.g. leaking oil)

physical damage to reef and associated floor eco-systems (e.g. coral)

visual pollution of waste material (e.g. concrete and metal parts)

De-servicing may include:

drying

logging work details into equipment logs

oiling/greasing

washing in fresh water

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
Load metrics and worksite data are determined and analysed to determine the specific requirements for the air-lift bags. 
Work plan is developed consistent with the dive plan. 
Air-lift bags are selected, inspected and prepared. 
Air-lift bags are secured safely to/from the dive site. 
Access obstructions and other hazards are assessed and action is taken to remove/reduce the risk. 
Air-lift bags are secured to the object's lift point/s. 
A work-safe area is established and the location and safety of divers is confirmed prior to commencing the lift. 
Air-lift bags are inflated and adjusted to control buoyancy. 
Movement of the object is effectively controlled. 
Environmental impact arising from the work task is minimised and waste products are recovered . 
Air-lift bags are de-rigged from the object. 
Air-lift bags are de-serviced and stored for re-use. 

Forms

Assessment Cover Sheet

DEFDV013B - 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

DEFDV013B - 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: