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Elements and Performance Criteria

  1. Prepare for underwater demolitions
  2. Conduct underwater demolition
  3. Conduct post-demolition procedures

Evidence Required

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 divers 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

DEFEOD Work safely with explosive ordnance

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 andor 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 industryapproved 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


Range Statement

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)