Assessor Resource

DEFEXO111
Conduct underwater explosive demolitions

Assessment tool

Version 1.0
Issue Date: April 2024


This unit describes the skills required to conduct explosive demolitions in an underwater environment. The unit also covers the conduct of maintenance on the established demolition circuits and includes the requirement to disarm and disassemble the demolition. The individual is also required to handle, transport and protect explosives in an underwater environment.

This unit applies to those required to assemble and disassemble firing circuits, and to fix detonators, primers, firing devices and explosive charges in accordance with the demolition supervising officer’s plan in an underwater environment.

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.

Those undertaking this unit would work individually and as part of a team, under indirect supervision. They would use discretion and judgement and take responsibility for the quality of their outputs, conducting routine tasks in a range of complex contexts that could be unpredictable.

No licensing, legislative or certification requirements apply to unit at the time of publication.

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


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.

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 includes:

conducting demolition operations

diving using self-contained underwater breathing apparatus in open water to 30 metres

handling explosives

implementing diving safety awareness strategies

operating specialist equipment

setting up explosive circuits

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 includes:

basic knowledge of:

oceanography

operational knowledge of:

dive equipment

dive physics

environmental effects on explosives

explosive charge design

explosive initiation techniques

general occupational/diving safety awareness

land-based explosive demolitions

Assessors must hold credentials specified within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must satisfy the Principles of Assessment and Rules of Evidence and all regulatory requirements included within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must occur in workplace operational situations. Where this is not appropriate, assessment must occur in simulated workplace operational situations that reflect 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 simulations

acceptable means of simulation assessment

applicable documentation, including workplace procedures, regulations, codes of practice and operation manuals

relevant materials, tools, equipment and PPE currently used in industry.

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.

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.

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 includes:

conducting demolition operations

diving using self-contained underwater breathing apparatus in open water to 30 metres

handling explosives

implementing diving safety awareness strategies

operating specialist equipment

setting up explosive circuits

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 includes:

basic knowledge of:

oceanography

operational knowledge of:

dive equipment

dive physics

environmental effects on explosives

explosive charge design

explosive initiation techniques

general occupational/diving safety awareness

land-based explosive demolitions

Assessors must hold credentials specified within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must satisfy the Principles of Assessment and Rules of Evidence and all regulatory requirements included within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must occur in workplace operational situations. Where this is not appropriate, assessment must occur in simulated workplace operational situations that reflect 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 simulations

acceptable means of simulation assessment

applicable documentation, including workplace procedures, regulations, codes of practice and operation manuals

relevant materials, tools, equipment and PPE currently used in industry.

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
Analyse work task and worksite data to determine the specific requirements for the explosive demolition. 
Develop a work plan consistent with the dive plan. 
Select, inspect and prepare explosives, associated equipment and protective equipment. 
Secure explosives and associated equipment to/from the dive site. 
Assess access obstructions and other hazards and take action to remove/reduce the risk. 
Secure explosives and associated equipment on self. 
Establish work-safe area at the demolition site and confirm location of divers prior to commencing demolition task/s. 
Identify and manage hazards relevant to the application of explosives and associated equipment. 
Fix and place demolition charges, lay line, set timing devices, establish firing point and connect and test circuit. 
Confirm location and safety of personnel prior to firing the demolition charge. 
Fire demolition charge. 
Minimise environmental impact from use of explosives and recover waste products. 
Disassemble demolition circuit. 
Recover, de-service and store for re-use explosives and associated equipment, or dispose. 
Record usage of explosives and associated equipment. 
Analyse work task and worksite data to determine the specific requirements for the explosive demolition 
 
 
 
 
Secure explosives and associated equipment on self 
 
 
 
 
 
Minimise environmental impact from use of explosives and recover waste products 
 
 
 

Forms

Assessment Cover Sheet

DEFEXO111 - Conduct underwater explosive demolitions
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

DEFEXO111 - Conduct underwater explosive demolitions

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: