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Elements and Performance Criteria

  1. Prepare for underwater concreting
  2. Concrete underwater site
  3. Conclude underwater concreting

Evidence Required

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 work task where the diver conducts an underwater concreting task such as the reinforcement of pier legs the placement of footings or laying of a slab or ramp

Context of and specific resources for assessment

Context of assessment

Competency should be assessed in the ocean

When practicable assessment should relate to the divers vocational focus

Specific resources for assessment

Access to a dive location a complete range of concrete ingredients and concreting equipment


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.

Work task may include:

pad foundation

post holes

slabs

trench foundations

Worksite data may include:

current

depth

gradient

hazards

obstacles

temperature

Concrete may vary by:

composition/strength

setting time

Concreting equipment may include:

manual, fuel and electrically operated mixers

shovel

vibrator

Selecting, inspecting and preparing concreting equipment may include:

pre-construction of formwork

pre-mixing

Protective equipment may include:

boots

gloves

Action to remove/reduce the risk may include:

erecting signage

using patrol/sentry craft

Formwork may include:

bracing

edge boards

pegs

struts

Delivery of cement may be via:

manual

pump-line

shute

Protection of concrete may include:

use of plastic sheeting

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)