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Service and repair pneumatic systems on land-based equipment

URN: LANLEO25
Business Sectors (Suites): Land-based Engineering Operations
Developed by: Lantra
Approved on: 2022

Overview

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This standard covers the service and repair of pneumatic systems on land-based equipment. It includes the diagnosis, removal, service/repair and reinstatement of pneumatic circuits, systems and components in line with the manufacturer’s specifications, (e.g. air-braking or air-activated mechanisms).

When working with machinery or equipment you should be trained and hold current certification, where required, in accordance with the relevant legislation.

When working on high voltage (hazardous voltage/HaV) electric vehicles, de-energising must be done by a person who has been trained in accordance with the manufacturer’s procedures.

This standard is for those who work in land-based engineering using their initiative in a customer-facing role. It may include mentoring a junior colleague to assist in aspects of service and repair.

Performance criteria

You must be able to:

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  1. be aware of hazards and assess the risks associated with the activity and the location where it is to be carried out
  2. be aware of the potential environmental impact associated with the activity and the ways in which this can be controlled
  3. select and wear suitable clothing and personal protective equipment (PPE)
  4. select, prepare, use, maintain and store the tools and equipment required to carry out the activity in accordance with the relevant legal requirements, manufacturer's instructions and company practices
  5. check that the land-based equipment requiring service and repair is safe, prepared and isolated from power sources, where required
  6. take the necessary precautions to prevent the escape of chemicals, gases and other substances and minimise dangers from contamination and hazards, where required
  7. use a variety of methods to collect diagnostic information to identify defects and faults  
  8. determine the requirements for service and repair
  9. identify and establish the availability of replacement components required for the activity
  10. identify, remove and replace pneumatic system components on land-based equipment
  11. release stored air pressure and condensation in systems and circuits
  12. dismantle, service/repair and reinstate pneumatic systems and components in line with the manufacturers’ specifications and standards
  13. remove and replace worn and damaged components in accordance with instructions and specifications
  14. detect air leaks and seal components used in pneumatic systems
  15. prepare the pneumatic system to be tested and carry out the tests 
  16. use suitable testing methods to assess the performance of the reassembled system on completion of the work and confirm that it performs to the operating specifications prior to returning the equipment to the customer
  17. recycle or sustainably dispose of the different types of waste, including hazardous and non-hazardous, caused by the activity, in accordance with the relevant legal and environmental requirements and company policies 
  18. complete records as required by the relevant legislation, warranty requirements and company procedures

Knowledge and Understanding

You need to know and understand:

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  1. how to identify hazards and assess risks when preparing to service and repair land-based equipment 
  2. the type of clothing and personal protective equipment (PPE) suitable for the activity
  3. the tools and equipment required to carry out the activity and how to select, prepare, use, maintain and store these safely and correctly, in accordance with the manufacturer's instructions and company practices
  4. the relevant legal requirements for the preparation and use of work equipment
  5. how land-based equipment should be prepared for service and repair
  6. the dangers created by stored energy and how to respond to these during the preparation stage 
  7. the hazardous chemicals, gases and other substances that may be present and how they should be dealt with 
  8. the applications of pneumatic systems on land-based engineering equipment
  9. the different methods that can be used for the assessment of defects and faults with pneumatic systems on land-based equipment and for the identification of the root cause  
  10. the primary causes of pneumatic failures and their symptoms
  11. the factors that determine whether it is worthwhile carrying out the service and repair, such as cost, estimated working life or urgent need for the equipment
  12. the components required for the service and repair and the company procedures for obtaining replacements 
  13. the symbols used in pneumatic circuit diagrams
  14. how to read and interpret pneumatic circuit diagrams
  15. how to remove and replace pneumatic components
  16. how to dismantle, service/repair and reinstate pneumatic components and systems in line with the manufacturer’s specifications and standards
  17. the different types of pneumatic circuit
  18. the construction, types and function of pneumatic system components
  19. the methods of leak detection in air systems
  20. how to identify pneumatic pipe types and their relevant fittings
  21. how to assemble, repair and manufacture pneumatic pipes
  22. how to carry out diagnostic tests and adjust pneumatic components and systems in line with the manufacturer’s specifications and factory settings
  23. the methods of testing equipment on completion of the activity to confirm that that it performs to the operating specifications prior to returning it to the customer
  24. how to recycle or sustainably dispose of the different types of waste, including hazardous and non-hazardous, caused by the activity, in accordance with the relevant legal and environmental requirements and company policies 
  25. the potential impact that the activity could have on the environment and the ways in which this can be controlled
  26. the information that needs to be recorded, the company procedure for maintaining records and the requirements of data protection legislation

Scope/range

Scope Performance

Scope Knowledge

Values

Behaviours

Skills

Glossary

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Causes of pneumatic failures  e.g. water, fatigue, contamination, leaks

Diagnostic tests  e.g. pressure tests, adjust pressure limiting and relief valves, set air brake actuation valves

Diagnostic tools  e.g. high and low pressure gauges, pressure

Hazardous chemicals and substances could include:
• fuels
• oils
• fluids
• gases
• dust
• compressed air

Instructions and specifications:
• drawings/plans
• schedules
• method statements
• Standard Operating Procedures (SOPs)
• manufacturer’s instructions
• customer requirements
• verbal instructions

Methods of diagnosis:
• visual inspections
• functional and operational tests
• diagnostic equipment
• remote electronic control and monitoring systems
• reviewing technical data

Pneumatic circuit e.g. single line and twin line

Pneumatic system components e.g.
• air compressors
• air-pressure regulating valves, relief valves, dump valves
• air-pressure control valves, handbrake valve, footbrake valves, diaphragm-operated valves
• air-activated cylinders, air cushions, failsafe/emergency system components
• air receivers and driers

Stored energy:
• springs
• belt tension
• hydraulic pressure
• electrical discharge
• accumulator discharge

Links To Other NOS

​Basic testing and diagnostics is covered in LANLEO30 Inspect and test land-based equipment

External Links

Version Number

3

Indicative Review Date

2027

Validity

Current

Status

Original

Originating Organisation

Lantra

Original URN

LANLEO25

Relevant Occupations

Land-based Engineering

SOC Code

5223

Keywords

land-based; equipment; machinery; pneumatic; service; repair