Maintenance Planning / LORA / Reliability Engineering

Maintenance Planning / LORA / Reliability Engineering

Maintenance planning uses analytical methodologies to determine when an item will be replaced, repaired, or discarded based on cost considerations and operational readiness requirements. For a complex systems containing assemblies, sub-assemblies and components organized into several levels of possible repair decisions, DTB systems determine an optimal repair and maintenance criteria aimed to minimize overall system life-cycle costs.

Logistics personnel examine not only the cost of the part to be replaced or repaired but all of the elements required to make sure the job is done correctly. This includes the skill level of personnel, support equipment required to perform the task, test equipment required to test the repaired product, and the facilities required to house the entire operation.

Reliability Engineering

Reliability is defined as the probability of failure, the frequency of failures or, in terms of availability, a probability derived from reliability and maintainability. Maintainability and maintenance may be defined as a part of reliability engineering.

“Reliability is, after all, engineering in its most practical form.” — James R. Schlesinger, Former US Secretary of State for Defense.

Reliability plays a key role in cost-effectiveness of systems. Reliability engineering is an engineering field that deals with the study, evaluation, and life-cycle support of a system or component to perform under stated conditions for a specified period of time.

Reliability engineering for complex systems requires a different, more elaborate systems approach than for non-complex systems. Reliability analysis has important links with:

  • Functional analysis
  • Storage
  • Specification requirements
  • Spare parts
  • Information delivery
  • Operations research
  • Manufacture / quality
  • Human factors
  • Maintenance
  • Technical documentation
  • Transport
  • Work skills training

Effective reliability engineering requires experience, broad engineering skills and knowledge from many different fields of engineering. Reliability engineering focuses on costs of failure caused by system downtime, cost of spares, repair equipment, personnel and cost of warranty claims.