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Evidence Guide: DEFDV016B - Perform underwater rigging work

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

DEFDV016B - Perform underwater rigging work

What evidence can you provide to prove your understanding of each of the following citeria?

Prepare for underwater rigging operation

  1. Load metrics and worksite data are determined and analysed to determine the specific requirements for rigginggear.
  2. Work plan is developed consistent with the dive plan.
  3. Rigging gear is selected, inspected and prepared.
  4. Rigging gear is secured safely to/from the dive site.
  5. Access obstructions and other hazards are assessed and actionis taken toremove/reduce the risk.
Load metrics and worksite data are determined and analysed to determine the specific requirements for rigginggear.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Work plan is developed consistent with the dive plan.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Rigging gear is selected, inspected and prepared.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Rigging gear is secured safely to/from the dive site.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Access obstructions and other hazards are assessed and actionis taken toremove/reduce the risk.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Lift and handle submerged objects using mechanical advantage

  1. Lift points are established to secure the object to the lifting device.
  2. Work-safe area is established and the location and safety of divers is confirmed prior to commencing the lift.
  3. Lifting devices are operated within accepted load tolerances.
  4. Raised objects are anchored off to allow associated work to be undertaken in safety.
Lift points are established to secure the object to the lifting device.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Work-safe area is established and the location and safety of divers is confirmed prior to commencing the lift.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Lifting devices are operated within accepted load tolerances.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Raised objects are anchored off to allow associated work to be undertaken in safety.

Completed
Date:

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Conclude underwater rigging operations

  1. Environmental impact arising from the work task is minimised and waste products are recovered.
  2. Rigging gear is disassembled, de-serviced and stored after use.
  3. Log books are completed.
Environmental impact arising from the work task is minimised and waste products are recovered.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Rigging gear is disassembled, de-serviced and stored after use.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Log books are completed.

Completed
Date:

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Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

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 a physical rigging and lifting operation where the diver conducts the following lifts with mechanical devices:

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 k

Context of and specific resources for assessment

Context of assessment

Competency should be assessed in the ocean supported by questioning on shore or aboard vessels.

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; and rigging equipment.

Required Skills and Knowledge

This describes the essential skills and knowledge and their level, required for this unit.

Required Skills

check equipment

inspect equipment for serviceability and functionality

planning

rig equipment

Required Knowledge

determination of mass of submerged objects

dive equipment

dive physics

general occupational/diving safety awareness

marine hazards

oceanography

relevant references and Australian Standards

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.

Load metrics may include:

centre of gravity

composition

dimensions

lift points

weight

Worksite data may include:

depth

gradient

hazards

obstacles

Rigging gear may include:

air and hydraulic motors

blocks and tackle

bolts

chain hoist

chains

clamps

clocks and wedges

cradle timbers

equalising gear

eye bolts

feeler gauges

fibrous rope

fishplates

fixing brackets

jacks

karabiners and shackles

packers

puller systems

rigging screws

rollers

skates

skids

sliding shoes

slings

spreader beams

steel wire rope

turfers

turn buckles

winches

Selecting, inspecting and preparing rigging gear may include:

checking of test certificates

establishing end-brackets:

wedged end sockets

bulldog clips

eyed bolts

identifying load tolerances

testing functionality of:

karabiner and shackle hinge and sleeve checks

movement of blocks and tackle

start-up of air and hydraulic motors

Action to remove/reduce the risk may include:

erecting signage

using patrol/sentry craft

Lifting points may include:

single

multiple

Lifting devices include:

blocks and tackle

hydraulic/pneumatic lift

Operating liftingdevices may include:

lowering

raising

shifting laterally

Load tolerances may include:

safe working load (SWL)

working load limit (WLL)

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:

coiling and cordage

drying

logging work details into equipment logs

oiling/greasing

washing in fresh water