本推荐规程描述了如何收集数据，以用于可靠性、可用性和可靠性 工业和商业电力系统的可维护性评估。对于在可靠性领域经验有限的电力工程师来说，这可能是最有价值的。它还可以帮助所有负责工业和商业电力系统电气设计的工程师。

This recommended practice describes how to collect data for use in reliability, availability, and maintainability assessments of industrial and commercial power systems. It is likely to be of greatest value to the power-oriented engineer with limited experience in the area of reliability. It can also be an aid to all engineers responsible for the electrical design of industrial and commercial power systems.