AURRTA007
Analyse and evaluate faults in light marine hydraulic systems


Application

This unit describes the performance outcomes required to analyse and evaluate faults in light marine hydraulic systems in order to initiate action to sustain, vary or enhance performance. It involves identifying, evaluating, selecting, justifying and documenting the most appropriate rectification method or variation to the rectification method. The unit includes the analysis of multi-system and intermittent faults which may be caused by operating in adverse conditions.

It applies to those working in the marine service and repair industry on inboard, outboard or jet drive marine vessels.

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


Elements and Performance Criteria

Elements

Elements describe the essential outcomes.

Performance Criteria

Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold and italicised text is used, further information is detailed in the range of conditions section.

1. Identify and confirm the work requirement

1.1 Objective of the analysis and evaluation is determined from workplace instructions

1.2 Specifications for light marine hydraulic system are sourced and interpreted

1.3 System faults, deficiencies or discrepancies are identified and confirmed

1.4 Hazards associated with the work are identified and risks are managed according to workplace procedures and safety and environmental requirements

2. Prepare for analysis and evaluation

2.1 Evaluation criteria are developed or adopted to meet the objective of the analysis and evaluation

2.2 Analytical and evaluative methodology is developed or identified from technical information

2.3 Testing equipment is prepared according to manufacturer specifications and workplace procedures

2.4 Tools and materials required to support the diagnostic procedure are identified, selected and prepared for use

2.5 Hydraulic system and components are prepared for the diagnostic process

3. Carry out analysis and evaluation

3.1 Selected analytical and evaluative methodology is followed according to manufacturer specifications and workplace procedures

3.2 Tests are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements

3.3 Analytical and other diagnostic findings are verified, as required, by using reliable alternative or optional processes

3.4 Analytical findings and results are assessed against evaluation criteria

3.5 Valid conclusions are drawn from available evidence and documented according to workplace requirements

4. Make recommendations

4.1 Options for responding to the objective are determined from further research of technical support information

4.2 Rectification method is selected from an analysis of the options, operating conditions, regulatory requirements, Australian Design Rules, and financial implications

4.3 Report is prepared specifying analysis and evaluation process, and detailing and justifying rectification method or variation to the rectification method

5. Complete work processes

5.1 Final inspection is made to ensure work is to workplace expectations

5.2 Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected

5.3 Tools and equipment are checked and stored according to workplace procedures

5.4 Workplace documentation is processed according to workplace procedures

Evidence of Performance

Before competency can be determined, individuals must demonstrate they can perform the following according to the standards defined in this unit’s elements, performance criteria, range of conditions and foundation skills:

analyse and evaluate a fault in the hydraulic systems of three different light marine vessels

the above analysis and evaluation must involve three of the following systems:

power assisted steering

hydraulic steering

bow thruster

trim tabs

tilt and trim

winch.


Evidence of Knowledge

Individuals must be able to demonstrate knowledge of:

work health and safety (WHS) and occupational health and safety (OHS) requirements relating to analysing and evaluating faults in light marine hydraulic systems, including procedures for working with:

fluids under pressure

stored pressure hazards

hot fluid hazards

environmental requirements, including procedures for trapping, storing and disposing of fluids released from hydraulic systems

principles and processes involved in planning and implementing analysis and evaluation of light marine hydraulic system faults

design and planning of diagnostic procedures of light marine hydraulic system faults, including procedures for diagnosing:

hydraulic faults

mechanical faults

electrical faults

procedures for analysing and evaluating light marine hydraulic system faults, including:

system failure analysis

component failure analysis

hydraulic principles, including pressure, flow and force

mechanical principles, including levers and mechanical advantage

types, functions, operation and limitations of light marine hydraulic systems, including:

power assisted steering

hydraulic steering

bow thruster

trim tabs

tilt and trim

winches

vessel systems and their impact on light marine hydraulic system operation, including vessel electrical system

testing procedures for light marine hydraulic systems, including:

stroke times for tilt and trim operation

leak down and creep

full load water testing

types, functions, operation and limitations of diagnostic testing equipment required to analyse and evaluate faults in light marine hydraulic systems

procedures for documenting and reporting the analysis and evaluation process

requirements of Australian Design Rules (ADRs) relating to light marine hydraulic systems.


Assessment Conditions

Assessors must satisfy NVR/AQTF assessor requirements.

Competency is to be assessed in the workplace or a simulated environment that accurately reflects performance in a real workplace setting.

Assessment must include direct observation of tasks.

Where assessment of competency includes third-party evidence, individuals must provide evidence that links them to the light marine hydraulic systems that they have worked on, e.g. repair orders.

Assessors must verify performance evidence through questioning on skills and knowledge to ensure correct interpretation and application.

The following resources must be made available:

marine repair workplace or simulated workplace

workplace instructions

manufacturer hydraulic system specifications

three different light marine vessels with faults in the systems specified in the performance evidence

diagnostic equipment for light marine hydraulic systems

tools, equipment and materials appropriate for analysing and evaluating light marine hydraulic systems.


Foundation Skills

This section describes those language, literacy, numeracy and employment skills that are essential to performance and are not explicit in the performance criteria.

Skills

Description

Learning skills to:

apply learning and processes to different situations.

Reading skills to:

research, organise and interpret technical information relating to light marine hydraulic systems.

Writing skills to:

legibly and accurately fill out workplace documentation when reporting failure analysis findings

document and complete reports.

Numeracy skills to:

use mathematical ideas and techniques to complete measurements, calculate analytical requirements, calibrate testing equipment and present analytical results.

Planning and organising skills to:

plan own work requirements and prioritise actions to achieve required outcomes and ensure tasks are completed within workplace timeframes.

Technology skills to:

use specialised light marine hydraulic diagnostic equipment.


Range Statement

This section specifies work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included. Bold italicised wording, if used in the performance criteria, is detailed below.

Safety and environmental requirements must include:

work health and safety (WHS) and occupational health and safety (OHS) requirements, including procedures for working with:

fluids under pressure

stored pressure hazards

hot fluid hazards

environmental requirements, including procedures for trapping, storing and disposing of fluids released from hydraulic systems.

Analytical and evaluative methodology must include:

diagnostic process, sequence, tests and testing equipment.

Tests must include:

stroke times for tilt and trim operation

leak down and creep

full load water testing.


Sectors

Technical


Competency Field

Marine