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Types of Maintenance

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What are the types of maintenance?

Pre Planned Maintenance (PPM) can be defined as an equipment maintenance strategy based on assessing its operational performance & function testing at fixed intervals regardless of its condition.

Scheduled operational cycle reporting are examples of preventive maintenance tasks as highlighted below which form part of our equipment specific checklists:

  • Operational safety inspection
  • Electrical inspection
  • Mechanical inspection
  • Hydraulic inspection
  • Equipment function test
  • Asset condition assessment

Preventative Maintenance

Carried out before a breakdown or failure of equipment occurs – operational inspection checklists can identify areas such as:

  • Fault-finding
  • H&S risks
  • Condition reporting – grading of equipment due based on usage and/or application

Remedial Maintenance

Carried out after a breakdown or failure of equipment occurs & can be identified as:

  • Deferred – source of breakdown or failure identified with equipment made operational but root cause not addressed due to downtime affecting core business activity and/or cost due to budgetary constraints.
  • Emergency/H&S Related – usually occurs due to a H&S event or a catastrophic failure of the equipment that causes major impact on the core business activity which invariably has unforeseen cost issues.

When carrying out preventive maintenance we are performing a task before a failure has occurred. That task can be aimed at preventing a failure, minimising the consequence of the failure or assessing the risk of the failure occurring.

When we are conducting remedial maintenance the failure has now occurred and we are basically reinstating equipment functionality.

EQUIPMENT – Servicing, Maintenance & Repair (SMR)

Somethings you may know or would like to know about SMR:

The duty to maintain work equipment (PUWER regulation 5) and take measures to manage the risks from maintenance (PUWER regulation 22) builds on the general duties of section 2 of the Health and Safety at Work Act. Which requires work equipment to be maintained so that it is safe, and work to be undertaken safely, so far as reasonably practicable.

PUWER requires that equipment provided for use at work is: suitable for the intended use, safe for use, maintained in a safe condition and inspected to ensure it is correctly installed and does not subsequently deteriorate.

In order to ensure work equipment does not deteriorate to the extent that it may put people at risk, employers, the relevant self-employed and others in control of work equipment are required by PUWER to keep it ‘maintained in an efficient state, in efficient order and in good repair’. If you are self-employed and your work poses no risk to the health and safety of others, then health and safety law may not apply to you. HSE has guidance to help you understand if the law applies. Such effective maintenance can not only help in meeting PUWER requirements but can also serve other business objectives, such as improved productivity and reduced environmental impact.

The frequency and nature of maintenance should be determined through risk assessment, taking full account of:

  • the manufacturer’s recommendations
  • the intensity of use
  • operating environment (e.g. the effect of temperature, corrosion, weathering)
  • user knowledge and experience
  • the risk to health and safety from any foreseeable failure or malfunction

Safety-critical parts of work equipment may need a higher and more frequent level of attention than other aspects, which can be reflected within any maintenance programme. Breakdown maintenance, undertaken only after faults or failures have occurred, will not be suitable where significant risk will arise from the continued use of the work equipment.

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