Carrying out maintenance on gas distribution equipment

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This standard identifies the competences you need to carry out corrective maintenance activities on gas distribution systems and equipment, in accordance with approved procedures. This will involve dismantling, removing and replacing faulty or damaged components, in line with company procedures, on gas distribution systems such as mains, cylinder and tanked gases. You will be expected to cover a range of maintenance activities, such as labelling of components to aid the assembly, dismantling components requiring pressure techniques, torque loading, and setting, aligning and adjusting components, using appropriate techniques and procedures.

Your responsibilities will require you to comply with organisational policy and procedures for the maintenance activities undertaken, and to report any problems with these activities, or with the tools and equipment used, that you cannot personally resolve, or are outside your permitted authority, to the relevant people. You must ensure that all tools, equipment and materials used in the maintenance activities are removed from the work area on completion of the activities, and that all necessary job/task documentation is completed accurately and legibly. You will be expected to work to instructions, alone or in conjunction with others, taking personal responsibility for your own actions, and for the quality and accuracy of the work that you carry out.

Your underpinning knowledge will be sufficient to provide a sound basis for your work, and will enable you to adopt an informed approach to applying gas distribution maintenance procedures. You will have an understanding of dismantling and reassembly methods and procedures, and their application. You will know how the system functions and the purpose of individual components, in adequate depth to provide a sound basis for carrying out any repair or adjustment. In addition, you will have sufficient knowledge of these components to ensure that they are fit for purpose and meet the specifications, thus providing a sound basis for carrying out reassembly.

You will understand the safety precautions required when carrying out the maintenance activities, especially those for isolating the equipment. You will be required to demonstrate safe working practices throughout, and will understand your responsibility for taking the necessary safeguards to protect yourself and others in the workplace.

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1. work safely at all times, complying with health and safety and other relevant regulations, directives and guidelines
2. follow the relevant maintenance schedules to carry out the required work
3. carry out the maintenance activities within the limits of your personal authority
4. carry out the maintenance activities in the specified sequence and in an agreed timescale
5. report any instances where the maintenance activities cannot be fully met or where there are identified defects outside the planned schedule
6. complete relevant maintenance records accurately and pass them on to the appropriate person
7. dispose of waste materials in accordance with safe working practices and approved procedures

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1. the health and safety requirements of the area in which the maintenance activity is to take place
2. the isolation and lock-off procedure or permit-to-work procedure that applies to the gas system being maintained
3. the specific health and safety precautions to be applied during the maintenance procedure, and their effects on others
4. the hazards associated with carrying out maintenance activities on gas systems (such as fire, explosion, respiratory problems, stored pressure, misuse of tools, using damaged or badly maintained tools and equipment, not following laid-down maintenance procedures), and how they can be minimised
5. the importance of wearing protective clothing and other appropriate safety equipment (PPE) during the maintenance process
6. how to obtain and interpret information from job instructions and other documents needed for the maintenance activities (such as drawings, circuit and physical layouts, charts, specifications, manufacturers' manuals, history/maintenance reports, graphical electrical symbols, BS7671/IET wiring regulations)
7. the procedure for obtaining replacement parts, materials and other consumables necessary for the maintenance activities
8. the importance of following the correct procedures for purging and de-commissioning components
9. the sequence to be adopted for the dismantling/reassembly of various types of gas assemblies
10. methods of checking that components are fit for purpose, how to identify defects and wear characteristics, and the need to replace `lifed' items (such as seals and gaskets)
11. how to make adjustments to components/assemblies to ensure that they function correctly
12. the basic principles of how the equipment functions, its operating sequence, the working purpose of individual units/components and how they interact
13. the methods used to label and identify different pipework systems (including colour coding and warning signs)
14. the different types and applications of measuring and monitoring equipment used
15. how to check that tools and equipment are free from damage or defects, are in a safe and usable condition, and are configured correctly for their intended purpose
16. the generation of maintenance documentation and/or reports following the maintenance activity
17. the equipment operating and control procedures to be applied during the maintenance activity
18. how to use lifting and handling equipment correctly and safely in the maintenance activity
19. the problems associated with the maintenance activity, and how they can be overcome
20. the organisational procedure to be adopted for the safe disposal of waste of all types of materials

the extent of your own authority and to whom you should report if you have problems that you cannot resolve

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1. Carry out all of the following during the maintenance activity:

   1. undertake the maintenance activities to cause minimal disruption to normal working
   2. use the correct issue of maintenance documentation (such as drawings, manuals, maintenance records, schedules)
   3. adhere to procedures or systems in place for risk assessment, COSHH, personal protective equipment and other relevant safety regulations
   4. ensure the safe isolation of equipment (such as mechanical, electricity, gas, air or fluids)
   5. ensure that safe access and working arrangements have been provided for the maintenance area
   6. carry out the scheduled maintenance tasks, using appropriate techniques and procedures
   7. re-connect and return the equipment to service on completion of the maintenance activities
   8. dispose of waste items in a safe and environmentally acceptable manner
   9. leave the work area in a safe and tidy condition

2. Carry out maintenance activities on one of the following types of gas distribution system:

   1. mains
   2. tanks
   3. cylinders

3. Carry out all of the following maintenance activities:

   1. testing the system for leaks
   2. dismantling equipment to the appropriate level
   3. setting, aligning and adjusting components
   4. checking components for serviceability
   5. replacing all 'lifed' items (such as batteries, filters)
   6. marking/labelling of components
   7. tightening fasteners to the required torque
   8. making 'off-line' checks before starting up
   9. functionally testing the completed system
   10. replacing damaged/defective components

recording the results of the maintenance activity

12.  

reporting or taking action with regard to any defects that require immediate attention (such as replacing non-'lifed' components)

4. Maintain and/or replace six of the following gas distribution components:

   1. motors
   2. valves
   3. pipework
   4. gaskets and seals
   5. boosters
   6. filters
   7. couplings
   8. manifolds
   9. storage devices
   10. regulators
   11. meters
   12. gauges/indicators
   13. switches
   14. sensors
   15. supporting devices
   16. electrical wiring
   17. safety devices

5. Maintain gas distribution systems, in accordance with one of the following:

   1. organisational guidelines and codes of practice
   2. equipment manufacturer's operation range
   3. company regulations
   4. BS, ISO and/or BSEN standards

6. Complete one of the following maintenance records, and pass it to the appropriate person:

   1. job cards
   2. permit to work/formal risk assessment
   3. maintenance log and action report
   4. company-specific documentation

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2

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30 Mar 2018

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Current

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Original

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Semta

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SEMEMI2-26

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Maintenance Fitter

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5223

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Engineering; manufacturing; maintenance; gas distribution; mains gas system; cylinder gas system; tank gas system; gas booster system; gas storage device

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