This unit specifies the skills and knowledge required to complete underwater rigging work.

It includes securing and moving submerged loads by employing blocks and tackle, chains, slings and cordage. It also includes establishing secure lift points, setting rigging equipment between load and lifting platform, and controlling the conduct of the lift.

This unit applies to persons working as Defence divers.

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.

Persons undertaking this unit work independently and perform specific tasks in a range of contexts that could be unpredictable.

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

ELEMENTS

PERFORMANCE CRITERIA

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Prepare for underwater rigging operation

1.1

Identify load metrics and worksite data to meet task requirements

1.2

Develop work plan consistent with dive plan in accordance with organisational procedures and task requirements

1.3

Select, inspect and prepare rigging gear in accordance with safe lifting weight limits and work plan

1.4

Secure rigging gear for safe transport to/from dive site

1.5

Identify obstructions and other lift hazards to determine risks and to manage risk control measures in accordance with dive plan

2

Lift and handle submerged objects using mechanical advantage

2.1

Identify lift points to secure object to lifting device in accordance with safe lifting weight limits

2.2

Determine a safe work area and confirm location of other divers and nearby surface vessels and/or structure prior to commencing lift, in accordance with work plan

2.3

Operate lifting devices within accepted load tolerances

2.4

Ensure lifting devices are anchored off raised objects in accordance with operational and safety procedures

3

Complete underwater rigging operations

3.1

Minimise environmental impact arising from work task and recover waste products

3.2

Disassemble, inspect, de-service and store rigging gear

3.3

Complete required documentation and records, in accordance with organisational procedures

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 include:

analysing constraints of object to be lifted to determine technique

applying relevant legislation, standards, and organisational policies and procedures

applying underwater risk control measures and work plan requirements

calculating load parameters

conducting one vertical lift to the surface with mechanical devices

constructing rigs including:

assembling equipment to ensure load can be lifted with available equipment

determining load capacity of components

developing underwater rigging work plan

planning underwater rigging work

preparing accurate reports and required documentation

rigging load within safe lifting weight limits.

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 include knowledge of:

determination of mass of submerged objects

dive equipment

dive physics

dive physiology and medicine including:

heat and cold illnesses

compression illnesses

decompression illnesses

diving descent and ascent techniques

equipment inspection and checking specifications

general diving safety awareness including:

diving in harbours

diving in tidal waters, currents and tides

diving on and/or near a ship’s bottom

lost/separated

entrapment/foul lines

marine animal threats

pollution/weeds

working in confined spaces

lifting and rigging equipment calculations, techniques and specifications

oceanography

relevant legislation, standards, and organisational policies and procedures

relevant safe lifting weight limits

relevant risk mitigation organisational procedures including:

relevant marine hazards and risk control measures

relevant rigging workplace hazards.

As a minimum, assessors must satisfy applicable regulatory requirements, which include requirements in the Standards for Registered Training Organisations current at the time of assessment.

As a minimum, assessment must satisfy applicable regulatory requirements, which include requirements in the Standards for Registered Training Organisations current at the time of assessment.

Assessment must occur in workplace operational situations where it is appropriate to do so; where this is not appropriate, assessment must occur in simulated workplace operational situations that replicate 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 other simulations

relevant and appropriate materials, tools, lifting equipment and personal protective equipment currently used in industry

ocean with a range of oceanic, diurnal and nocturnal environments

applicable documentation including organisational procedures, regulations, industry standards, codes of practice and operation manuals.

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

Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.

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.

Not applicable.

Work Diving