Unit of competency details

UEPMNT303A - Maintain Mechanical Valves (Release 1)


Usage recommendation:
Is superseded by and equivalent to UEPMNT303B - Maintain mechanical valves 24/Jul/2012
Supersedes and is equivalent to UTPNEG062A - Install and maintain mechanical valvesFull 06/Nov/2006

ReleaseRelease date
1 1 (this release) 07/Nov/2006


SchemeCodeClassification value
ASCED Module/Unit of Competency Field of Education Identifier 030717 Plant And Machine Operations  

Classification history

SchemeCodeClassification valueStart dateEnd date
ASCED Module/Unit of Competency Field of Education Identifier 030717 Plant And Machine Operations  07/Nov/2006 
The content being displayed has been produced by a third party, while all attempts have been made to make this content as accessible as possible it cannot be guaranteed. If you are encountering issues following the content on this page please consider downloading the content in its original form

Modification History

Not Applicable

Unit Descriptor

Unit Descriptor 


This unit deals with the skills and knowledge required to undertake fault finding, diagnosis, repair and/or overhaul of mechanical valves, but excluding any associated servo or actuating unit.

Application of the Unit

Application of the Unit 


This unit is intended to augment formally acquired competencies. It is suitable for employment-based programs under an approved contract of training.

License to practise 


The skills and knowledge described in this unit do not require a licence to practise in the workplace. However, practice in this unit is subject to regulations directly related to Occupational Health and Safety and where applicable contracts of training such as apprenticeships and the like.

Licensing/Regulatory Information

Not Applicable


Prerequisite Unit ()




There are no prerequisite units.

Employability Skills Information

Refer to the Evidence Guide

Elements and Performance Criteria Pre-Content

) Elements describe the essential outcomes of a competency standard unit

Performance criteria describe the required performance needed to demonstrate achievement of the element. Assessment of performance is to be consistent with the Evidence Guide.

Elements and Performance Criteria




Plan and prepare for the work


Work requirements are identified from request/work orders or equivalent and clarified/confirmed with appropriate parties or by site inspection


Occupational Health and Safety standards, statutory requirements, relevant Australian standards, codes of practice, manufacturers' specifications, environmental requirements and enterprise procedures are identified, applied and monitored throughout the work procedure


Resources required to satisfy the work plan are identified, obtained and inspected for compliance with the job specifications


Relevant plans, drawings and texts are selected and interpreted in accordance with the work plan


Correct size, type and quantity of materials/components are determined, obtained and inspected for compliance with the job specifications


Work is planned in detail including sequencing and prioritising and considerations made where appropriate for the maintenance of plant security and capacity in accordance with system/site requirements


Coordination requirements, including requests for isolations where appropriate, are resolved with others involved, affected or required by the work


Potential hazards are identified and prevention and/or control measures are selected in accordance with the work plan and site procedures


Work area is prepared in accordance with work requirements and site procedures


Where appropriate, the teams and individuals roles and responsibilities within the team are identified and, where required, assist in the provision of on-the-job training


Remove valves for maintenance


Required isolations are confirmed where appropriate in accordance with site requirements


Valve is disconnected in accordance with the work plan


Valve is removed in a manner which will assist in replacement in accordance with the work plan


Valve is inspected for abnormalities in accordance with the work plan.


Perform valve maintenance


Maintenance is performed in accordance with manufacturers specifications and the work plan


Valve is dismantled, clearly marked for identification and relevant sketches drawn in accordance with the work plan


Components are correlated in preparation for re-assembly in accordance with manufacturer drawings/manuals


New components are inspected to ensure compliance with manufacturer specifications


Dimensional inspection is performed with precision measuring devices to ensure compliance with manufacturer specifications and site requirements


Components are reassembled for testing in accordance with manufacturer specifications and site requirements


Modifications/alterations are undertaken in accordance with manufacturer specifications and site requirements


Components are levelled, aligned, coupled and connected in accordance with manufacturer specifications and site requirements


Valves are pressure tested, monitored and adjusted if required in accordance with manufacturer specifications and the work plan


Replace/install valves


Site is prepared for valve replacement in accordance with the work plan


Valve is replaced in accordance with the work plan and manufacturer specifications


Valve is connected in accordance with the work plan and manufacturer specifications


Final job inspection is completed and any permits relinquished in accordance with the work plan


Complete the work


Work is completed and appropriate personnel notified in accordance with site/enterprise requirements


Work area is cleared of waste, cleaned, restored and secured in accordance with site/enterprise procedures


Plant, tools and equipment are maintained and stored in accordance with site/enterprise procedures


Work completion details are finalised in accordance with site/enterprise procedures

Required Skills and Knowledge


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

Evidence shall show that knowledge has been acquired of maintaining mechanical valves.

The extent of the Essential Knowledge and Associated Skills required follows:

Evidence shall show that knowledge has been acquired for safe working practices of:

  • Occupational Health and Safety standards
  • Relevant Australian standards
  • Basic metallurgy
  • Hand and portable power tools
  • Welding and heating techniques
  • SAW consumables
  • Weld and material preparation techniques
  • Distortion control techniques
  • Welding jigs
  • Weld testing techniques
  • Fabrication and assembly techniques
  • Hazardous fumes and gases
  • Materials and their various profiles
  • Welding and heating equipment and its basic maintenance
  • Welding symbols
  • Communication principles

Specific skills needed to achieve the Performance Criteria:

  • Apply Occupational Health and Safety standards
  • Apply relevant Australian standards
  • Use welding, cutting and heating equipment
  • Maintain welding and heating equipment
  • Use hand and portable power tools
  • Use and update drawings, manuals and plans
  • Select materials
  • Apply relevant standards
  • Control distortion
  • Inspect and identify defects in welds
  • Inspect and finalise job
  • Utilise jigs and templates
  • Communicate effectively.

Evidence Guide


) This provides essential advice for assessment of the competency standard unit and must be read in conjunction with the Performance Criteria and the range statement of the competency standard unit and the Training Package Assessment Guidelines.

The Evidence Guide forms an integral part of this unit and shall be used in conjunction with all components parts of this unit and, performed in accordance with the Assessment Guidelines of this Training Package.

Overview of Assessment 


Longitude competency development approaches to assessment, such as Profiling, require data to be reliably gathered in a form that can be consistently interpreted over time. This approach is best utilised in Apprenticeship programs and reduces assessment intervention. It is the Industry preferred model for apprenticeships. However, where summative (or final) assessment is used it is to include the application of the competency in the normal work environment or in a realistically simulated work environment. It is recognised that, in some circumstances, assessment in part or full can occur outside the workplace, however, it must be in accord with Industry and regulatory policy.

Methods chosen for a particular assessment will be influenced by various factors. These include the extent of the assessment, the most effective locations for the assessment activities to take place, access to physical resources, additional safety measures that may be required and the critical nature of the competencies being assessed.

The critical safety nature of working with electricity, electrical equipment, gas or any other hazardous substance/material carries risk in deeming a person competent. Hence, sources of evidence need to be 'rich' in nature so as to minimise error in judgment.

Activities associated with normal every day work have a bearing on the decision as to how much and how detailed the data gathered will contribute to its 'richness'. Some skills are more critical to safety and operational requirements while the same skills may be more or less frequently practised. These points are raised for the assessors to consider when choosing an assessment method and developing assessment instruments. Sample assessment instruments are included in the Assessment Guidelines of this Training Package.

Critical aspects of evidence required to demonstrate competency in this unit 


Before the critical aspects of evidence are considered all prerequisites shall be met.

Evidence for competence in this unit shall be considered holistically. Each element and associated Performance Criteria shall be demonstrated on at least two occasions in accordance with the "Assessment Guidelines - UEP06". Evidence shall also comprise:

  • A representative body of Performance Criteria demonstrated within the timeframes typically expected of the discipline, work function and industrial environment. In particular this shall incorporate evidence that shows a candidate is able to:

  • Implement Occupational Health and Safety workplace procedures and practices including the use of risk control measures as specified in the Performance Criteria and Range Statement
  • Apply sustainable energy principles and practices as specified in the Performance Criteria and Range Statement
  • Demonstrate an understanding of the essential knowledge and associated skills as described in 6) Essential Knowledge and Associated Skills of this unit
  • Demonstrate an appropriate level of skills enabling employment
  • Conduct work observing the relevant Anti Discrimination legislation, regulations, polices and workplace procedures

  • Demonstrated performance across a representative range of contexts from the prescribed items below:

  • The knowledge and application of relevant sections of occupational, health and safety legislation, statutory legislation, enterprise/site safety procedures and enterprise/site emergency procedures
  • Preparation and planning of work
  • Removal techniques
  • Maintenance techniques and procedures
  • Installation techniques and procedures
  • Completion of work procedures
  • Dealing with an unplanned event by drawing on essential knowledge and skills to provide appropriate solutions incorporated in the holistic assessment with the above listed items

Context of and specific resources for assessment 


This unit should be assessed as it relates to normal work practice using procedures, information and resources typical of a workplace. This should include:

  • OHS policy and work procedures and instructions.
  • Suitable work environment, facilities, equipment and materials to undertake actual work as prescribed by this unit.

Competency Standards should be assessed in the workplace or simulated workplace and under the normal range of workplace conditions.

Assessment of this unit will be supported with documentary evidence, by means of endorsement stating type and application of work.

In addition to the resources listed above in Context of assessment', evidence should show competency working, in limited spaces, with different types of plant and equipment as well as different structural/construction types and method and in a variety of environments.

Method of assessment 


This unit shall be assessed by methods given in Volume 1, Part 3 "Assessment Guidelines".

Competent performance with inherent safe working practices is expected in the Industry to which this unit applies. This requires that the specified essential knowledge and associated skills are assessed in a structured environment which is primarily intended for learning/assessment and incorporates all necessary equipment and facilities for learners to develop and demonstrate the essential knowledge and skills described in this unit.

Concurrent assessment and relationship with other units 


There are no recommended concurrent assessments with this unit, however in some cases efficiencies may be gained in terms of learning and assessment effort being concurrently managed with allied competency standard units where listed.


Key competencies 


Evidence that particular key competencies have been achieved within this unit is in the context of the following Performance Criteria of evidence. See Volume 2, Part 4 for an explanation of Key competencies and levels of this Training Package.

Key competencies 

Example of Application 

Performance Level 

How are ideas and information communicated within this competency?

Refer to the following example of application:


Explain ideas and actions, make suggestions for alternative actions and deal with contingencies and non-routine situations.

How can information be collected, analysed and organised?

Refer to the following example of application:


Information with regard to operations, faults and maintenance may be observed and monitored for analysis and organised into records and reports.

How are activities planned and organised?

Refer to the following example of application:


Planning the required activity, to include coordination and use of equipment, materials and tools to avoid backtracking and rework.

How is team work used within this competency?

Refer to the following example of application:


Share tasks and provide appropriate support to other team members in completion of work tasks to meet the team's goals.

How are mathematical ideas and techniques used?

Refer to the following example of application:


Calculation of time to complete tasks, estimation of distances, levels, loads and material requirements.

How are problem solving skills applied?

Refer to the following example of application:


Determine solutions which focus on long and short-term resolution of work task problems.

How is use of technology applied?

Refer to the following example of application:


Access, communicate, measure and record information with regard to operations and performance of plant and equipment.

Skills Enabling Employment 


Evidence that competency in this unit incorporates skills enabling employment is in the context of the following performance. See Volume 2, Part 5 for definitions and an explanation of skills enabling employment.

Skills for Employment 

Example of Application 


Developing and using skills within a real workplace

Refer to the following example of application:

Completion of tasks within an acceptable timeframe and performance with some supervision.


Learning to learn in the workplace

Refer to the following example of application:

Comprehension and application of theoretical knowledge to well-developed skills.


Reflecting on the outcome and process of work task

Refer to the following example of application:

Focused on improvement in own and other team member's performance in the workplace.


Interacting and understanding of the context of the work task

Refer to the following example of application:

Working understanding of the processes and systems which apply to the workplace.


Planning and organising the meaningful work task

Refer to the following example of application:

Achieving work tasks in a timely manner and ensuring that the work team achieves its stated work goals.


Performing the work task in non-routine or contingent situations

Refer to the following example of application:

Seek advice and apply solutions to problems relevant to the workplace environment.

Range Statement


) This relates to the competency standard unit as a whole providing the range of contexts and conditions to which the Performance Criteria apply. It allows for different work environments and situations that will affect performance.

Valves may include high and low pressure and temperature valves that are flanged and bolted; dampers and hydro regulating valves; gate; globe; wafer; uni-flow; plug; ball; knife; rotary; piston (ported); diaphragm; non-return; pinch; pressure relief; regulating; isolating; slide dampers; isolating and regulating blade dampers; gas regulating or isolating dampers; hydro turbine guide vanes; and shutters.

Precision measuring devices may include inside/outside micrometers, verniers, engineer's rule, dial gauges, depth gauges and feeler gauges.

Testing may include pressure testing (hydraulic and vacuum), blue check.

Valve may control solutions which may include gases; solids; and fluids and chemicals such as caustic soda, chlorine, ammonia, sulphuric acid, sodium hypochlorite, hydrazine, diethylamine, citric acid, hydrofluoric acid, ammonium molydate, trisodium phosphate, hydrogen, nitrogen, carbon dioxide, water, fly-ash, slurry, compressed air, brine, oil, steam (superheated and saturated), hydrogen, propane and carbon dioxide.

Details of maintenance may be clarified by diagnosis and workplace inspection.

Maintenance may include repair, inspection, modification, overhaul, lubrication, servicing, test running, sealing, machining, identifying and replacing defective components and valve packing.

Valve drives may include electrical, mechanical, pneumatic, hydraulic or manual.

Work completion details may include plant and maintenance records, job cards, check sheets, on device labelling updates and reporting and/or documenting equipment defects

Work site environment may be affected by nearby plant or processes, e.g. chemical, heat, dust, noise, gas and oil.

Generic terms are used throughout this Training Package for vocational standard shall be regarded as part of the Range Statement in which competency is demonstrated. The definition of these and other terms are given in Volume 2, Part 1.

Unit Sector(s)

Not Applicable

Literacy and numeracy skills

Literacy and numeracy skills 


Participants are best equipped to achieve this unit if they have reading, writing and numeracy skills indicated by the following scales. Description of each scale is given in Volume 2, Part 3 Literacy and Numeracy







Competency Field

Competency Field