Hi Ernest,
Great replies so I have little to add.
Functional failure is not meeting design therefore when there is any loss of production the corrective work is reactive. I have had many NO created as proactive because the equipment was still online however production was reduced.
Early in our SAP years at a former company, we generated a general WO to capture all hours no tied to specific WO. This created two problems and I am adding to Terry's comments.
1. Inflation of hours on jobs which falsely decreased wrench time. Tavel, meetings and training were some of the hours captured. No maintenance was performed but the WO was a maintenance type and affected the wrench time calculation.
2.Many hours of small jobs such as tightening a leaking flange or changing absorbent pads under a leaking valve were placed under the general WO so not captured in the historical record of specific equipment creating a better than true historical record. Your question does not imply you are using a general WO. This is so all may learn from our mistake.
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Larry James
Lockout Larry
1. Personnel 2. Environment 3. Equipment 4. Revenue
Reno NV
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Original Message:
Sent: 10-16-2023 01:49 PM
From: Ernest Mathews
Subject: How to Define Corrective Proactive Maintenance
Hi - My site uses SAP PM CCMS. I am curious if anyone has advice on how to formulate a Proactive Work KPI. While it is straightforward to get counts / hours of PMs and CBM activities completed in a time period, and then to divide it be All Work to get a percentage, it is not so simple to define what body of corrective maintenance should be considered proactive. I am aware of the definitions and the tree (see below) within SMRP metrics 5.4.2 (Proactive Work) and 5.1.2 (Corrective Maintenance Hours). Specifically, I'm looking for guidance on:
- Philosophically defining what corrective work can be considered Proactive (5.4.2 = 'stemming from a structured ID program'). So for example, do you include repairs of leaks that were detected via a scheduled inspection within your CMMS / scheduled rounds? Or should a repair of the leak prior to Breakdown be considered proactive, regardless of who and how the detection occurred? Are all repairs that are detected prior to it becoming a system failure assumed to be proactive? I see merit in this approach being YES, but I'm curious what others do here.
- Within SAP CMMS, I was considering all RMOPs with Activity Type "INS" would be corrective-proactive. This would be the body of work orders that are "reconditioning," but not Breakdowns. I am defining Breakdown here as an event resulting a system being offline, or needing to be taken offline for repair. Possibly only reactive (emergent work interrupting weekly maintenance schedule) should be considered a breakdown here?

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Ernest Mathews
PE, CMRP
New Hampshire
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