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Measuring Overall Craft Effectiveness (OCE) - page 2 / 13

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The Maintenance Excellence Institute

How OCE Impacts Your Bottom Line: Part II – Page 2

Pure wrench time is just that and does not include time caused by the following;

  • 1.

    Running/traveling from emergency to emergency in a reactive, fire fighting mode

  • 2.

    Waiting on parts and finding parts or part information

  • 3.

    Waiting on other asset info, drawings, repair instructions, documentation etc.

  • 4.

    Waiting for the equipment to be shut down

  • 5.

    Waiting on rental equipment or contractor support to arrive at job site

  • 6.

    Waiting on other crafts to finish their part of the job

  • 7.

    Traveling to/from job site

  • 8.

    Make-ready, put away or shop clean up time

  • 9.

    Meetings, normal breaks, training time and excessive troubleshooting due to lack

of technical skills 10. Lack of effective planning and scheduling

Craft Utilization (or wrench time) can be measured and expressed simply as the ratio of:

CU% =

Total Productive (Wrench Time) Total Craft Hours Available & Paid x 100

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