Assessor Resource

DEFEO714C
Conduct underwater explosive demolitions

Assessment tool

Version 1.0
Issue Date: April 2024


This competency normally applies to the individual who is 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 individual is also required to handle, transport and protect explosives in an underwater environment.

This unit covers the competency 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.

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

DEFEO711C Conduct military demolition operations

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.

The evidence guide provides advice on assessment and must be read in conjunction with the Performance Criteria, Required Skills and Knowledge, the Range Statement and the Assessment Guidelines for this Training Package.

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

Assessment must confirm the ability to:

fix and place appropriate charges

implement work health and safety policies and procedures

implement diving safety awareness strategies

Consistency in performance

Competency should be demonstrated during a demolition task over a time frame that allows for the safe demonstration of competency.

Context of and specific resources for assessment

Context of assessment

Competency should be assessed in the ocean for all practical assessments, supported by questioning on shore or aboard vessels.

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

Specific resources for assessment

Access is required to:

complete range of diving, safety and accessory equipment

explosives

associated equipment

Method of assessment

This unit may be assessed with the following unit:

DEFEO101D Work safely with explosive ordnance.

In a public safety environment assessment is usually conducted via direct observation in a training environment or in the workplace via subject matter supervision and/or mentoring, which is typically recorded in a competency workbook.

Assessment is completed using appropriately qualified assessors who select the most appropriate method of assessment.

Assessment may occur in an operational environment or in an industry-approved simulated work environment. Forms of assessment that are typically used include:

direct observation

interviewing the candidate

journals and workplace documentation

third party reports from supervisors

written or oral questions

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

ability to dive

fire explosive ordnance

handle and care for explosives

set-up explosive circuits

Required Knowledge

dangers to explosives

dive equipment

dive physics

effect of water on explosives

explosive charges

general occupational/diving safety awareness

land based explosive demolitions

oceanography

relevant references and Australian Standards

work hazards

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.

Worksite data may include:

Current

Depth

Gradient

Hazards

Obstacles

Explosives and associated equipment include:

Anfo

Bangalore torpedo

Beehive

Composition b

Detonation cord

Electrical detonators

Electrical cable

Fuse burning time

Gelignite

Hayrick

M60 ignitor

Non-electrical detonators

Plastic explosive 4

Primers

Sheet explosive

Shrike lightweight exploder

Tester OHMETER No.1 Mk.3

Protective equipment may include:

Boots

Ear protection

Eye protection

Gloves

Helmet

Vests

Selecting, inspecting and preparing may include:

In respect of explosives, associated equipment and protective equipment:

circuit tests

date checks

preparatory assembly

proofing

test firing

Action to remove/reduce the risk may include:

Erecting signage

Using patrol/sentry craft

Explosives and associated equipment are secured on the self for:

Accessibility

Lack of interference with diver mobility and dive equipment

Hazards may include:

Contribution of water to explosive effect

Lightning

Radiation (e.g. sonar/radio)

Sympathetic explosion

Charges may include:

Borehole charges

Breaching charges

Concrete stripping charges

Concussion charges

Cratering charges

Cutting charges

Rope hole charges

Shaped charges

Lines may include:

Line-main

Single ring-main

Dual ring-main

Firing includes:

Conducting misfire drills

Environmental impact may include:

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

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

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

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
Work task and worksite data are determined and analysed to determine the specific requirements for the explosive demolition 
Work plan is developed consistent with the dive plan 
Explosives, associated equipment and protective equipment are selected, inspected and prepared 
Explosives and associated equipmentare secured safely to/from the dive site 
Access obstructions and other hazards are assessed and action is taken to remove/reduce the risk 
Explosives and associated equipment are secured on self 
Work-safe area is established at the demolition site and the location of divers is confirmed prior to commencing demolition task/s 
Hazards relevant to the application of explosives and associated equipment are identified and managed 
Charges are fixed and placed, line is laid, timing devices are set, firing point is established and circuit is connected and tested 
Location and safety of personnel is confirmed prior to firing the demolition 
Demolition is fired 
Environmental impact arising from use of explosives is minimised and waste products are recovered 
Demolition circuit is disassembled 
Explosives and associated equipment are recovered, de-serviced and stored for re-use or disposed of 
Usage of explosives and associated equipment is recorded 

Forms

Assessment Cover Sheet

DEFEO714C - 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

DEFEO714C - 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: