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Work Order Type Codes

Definition

The Work Order Type Code indicates the nature of the maintenance work. This code is applied to a work order when approved. It allows work to be segmented into different categories. This code is vital for sorting the work order backlog during the planning and scheduling processes and later for operational and KPI reporting of historical information. See examples from our Library of ISO-compliant Work Order Types below.

WO Groups WO Type Codes Description / Use Examples
Corrective Maintenance CM-Replace Replacement of item by new or refurbished item of same type and make Replacement of a worn-out bearing
CM-Repair Manual maintenance action performed to restore item to original appearance or state Repack, weld, plug, reconnect, remake, etc.
CM-Adjust Bringing any out-of-tolerance condition into tolerance Align, set and reset, calibrate, balance, etc.
CM-Refit Minor repair / servicing activity to return item to an acceptable appearance, internal or external Polish, clean, grind, paint, coat, lube, oil change, etc.
CM-Troubleshoot Cause of issue is investigated but no maintenance action is performed, or action is deferred. Able to regain function by simple actions, e.g. restart or resetting Restart, resetting, no maintenance action, etc.
CM-Overhaul Major overhaul of a piece of equipment Comprehensive inspection / overhaul with extensive disassembly and replacement of items as specified or required
Preventive Maintenance PM-Inspection Periodic inspection / check: a careful scrutiny of an item carried out with or without dismantling, normally by use of senses All types of general checks. Includes minor servicing as part of the inspection task.
PM-Service Tasks Periodic service tasks (normally no dismantling of item) Cleaning, change of filters on a monthly basis, adjustments, calibrations on a set schedule
PM-Test Periodic test of function of performance Function test of gas detector, fire alarms, test of flow meter
Predictive Maintenance PDM-Thermography Use of specific technologies to monitor the condition of the equipment Periodic checks using thermography technologies to measure variables related to equipment condition
PDM-Ultrasonic Use of specific technologies to monitor the condition of the equipment Periodic checks using ultrasonic technologies to measure variables related to equipment condition
PDM-Oil Analysis Use of specific technologies to monitor the condition of the equipment Periodic checks using oil analysis technologies to measure variables related to equipment condition
PDM-Vibration Use of specific technologies to monitor the condition of the equipment Periodic checks using vibration technologies to measure variables related to equipment condition