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Failed part, failure mode, failure code, failure cause

Accurate Work Order Close Out is important for the continuous improvement of any organization.

The objective of accurate data collection is to assist management in making the right decisions at the right time and to empower workers to make decisions at the floor level.

General Rules:

Work Orders should have at the minimum the:Fig. 3

1. All work is covered by a work order
2. The Correct Work Order Code (breakdown (1), urgent (2), etc.)
3. The Correct Equipment Number, at the Right Level
4. The maintenance person's accurate total work hours charged to this work order
5. The start time and completed time on the job
6. Comments from the maintenance person as to what work was performed
7. Any recommendation to changes to maintenance strategy or procedure
8. Any parts used whether from the storeroom or not
9. The maintenance person's signature.

WARNING: Without the above information one cannot determine;

• Actual maintenance cost for specific assets
• Mean Time Between Failure
• Mean Time To Repair
• Mean Time Between Repairs
• Rework
• If a PM Procedure is effective
• If a specific type repair is effective
• If a maintenance strategy meets the intent of the end users

10. Repair or Corrective Work orders must include everything as stated above plus

a. component code
b. failure code
c. Cause code.

11. Without the previously stated information one cannot determine the;

a. Dominant Failure Thread - which component has the most specific failure modes with a specific cause across multiple assets

Fig. 1

b. Dominant Failure Pattern - which failure pattern is the most dominant and what are the major causes of failures for this pattern. This allows one to develop strategies to eliminate unacceptable failures which impact the organization.

Fig. 2

WARNING: Without the above information one cannot determine;

a. The Component (across area, plant, etc) with the most failures
b. The most frequent Failure Mode for the most frequently failed component
c. The Component "Cause" for the majority of these failures.
d. Pareto Causes of Failures in most "Dominant Failure Pattern"

"In the absence of quality data we have reactivity"

Just a Thought!

Tip provided by Ricky Smith of GP Allied. If you have questions or suggested topics send an email to

Reference: ISO 14224

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