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Level of Service (LOS)
Level of service is "the parameters, or combination of parameters, which reflect social, political, environmental and economic outcomes that the organization delivers" (ISO 55000).

Chapter 3 of an Asset Management Plan (AMP) often includes information on levels of service.

Parameters of LOS (universal customer values)
The parameters can include:
  • Safety
  • Customer satisfaction
  • Quality
  • Quantity
  • Capacity
  • Reliability
  • Responsiveness
  • Environmental acceptability
  • Cost
  • Availability

Types of Level of Service

Listed below are the different types of LOS:

  • Enterprise level of Service
  • Customer level of Service (CLOS)
  • Technical level of service (TLOS)


The concept is equivalent to asset performance, when applied to an asset system.

Level of service is affected by the following:

See also:
  • Goals and Objectives
Compare with:

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