NIST addressed this a few years ago in a joint SMRP government relations project: Economics of Manufacturing Machinery Maintenance (link opens in new window) as part of the 'Manufacturing Machinery Maintenance' project (opens in new window). They reviewed and tied corporate KPI to maintenance activities including maintenance costs, preventable losses, and benefits of advanced maintenance strategies. They were also able to relate the following (from NIST web page):
Maintenance Costs: 2016 Machinery maintenance expenditures for NAICS 321-339 (excluding 324 and 325) were estimated to be $57.3 billion. Additional expenditures due to faults and failures were estimated at $16.3 billion and costs for inventory to buffer against maintenance issues costed $0.9 billion. In total, these maintenance activities costed $74.5 billion.
Preventable Losses: The 2016 losses due to preventable maintenance issues amounted to $119.1 billion: $18.1 billion due to downtime, $0.8 billion due to defects, and $100.2 billion due to lost sales from delays and defects. Additionally, an estimated 16.03 injuries and 0.05 deaths per million employees were associated with these maintenance issues.
Benefits of Advanced Maintenance Strategies: The estimated 2016 perceived benefit of adopting some additional amount of predictive maintenance was $6.5 billion from downtime reduction and $67.3 billion in increased sales ($73.8 billion in total). Other perceived benefits such as reduced defects are also likely to occur but were not monetized.
The top 25 % of those establishments relying on reactive maintenance was associated with 3.3 times more downtime than those in the bottom 25 %. They were also associated with 16.0 times more defects, 2.8 more lost sales due to defects from maintenance, 2.4 times more lost sales due to delays from maintenance, and 4.9 times more inventory increases due to maintenance issues. On average, 45.7 % of machinery maintenance was reactive maintenance. Those who relied less on reactive maintenance, and more on preventive and/or predictive maintenance, were more likely to use a pull (i.e., make to order) stock strategy and tend to be differentiators as opposed to being a cost competitor. That is, they rely more on their reputation and produce products on demand. The implication being that reactive maintenance reduces quality and increases uncertainty in production time.
Among those establishments that primarily rely on preventive and predictive maintenance (i.e., less than 50 % reactive maintenance), the top 50 % in predictive maintenance was associated with 15 % less downtime, an 87 % lower defect rate, and 66 % less inventory increases due to unplanned maintenance. Those establishments that relied more on predictive maintenance than preventive were more likely to have a pull (i.e., make to order) stock strategy and more likely to be a differentiator as opposed to being a cost competitor. Moreover, predictive maintenance is associated with higher quality products and shorter production times through reduced downtime. For those establishments that invested more heavily into preventive or predictive.
In addition, in tying our work on project implementation with our industry partners we tie energy and emissions (energy in general, emissions with companies that have ESG goals) to the activity. These are measurable values and maintenance activities were identified by the US Department of Energy in the 1990s as the number one method for decreasing energy spend by a corporation. Rutgers University energy extension center and the University of Illinois' Energy Resources Center identified a minimum energy reduction of 14% just through the application of a maintenance program from a reactive maintenance program. This was later implemented at the National Institutes of Health CUP with a combined predictive/preventive condition-based program on boiler and chiller systems with a resulting impact of ~50% reduction in overall energy spend (electric, gas, water) and was also proven with the US DOE's commercial/industrial 'Save Energy Now' program that started in 2005-2010(ish). The tools available for that program (developed starting in 1993-present) can be found: software tools, including MEASUR; Link to all other case studies, manuals, tools, etc. The initial impact of the Save Energy Now program at General Motors in the area of steam and energy, for instance, can be found on P. 42 of the August 2006 edition of Uptime Magazine (link here in separate window).
Just some food for thought on this topic.
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Howard Penrose
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Original Message:
Sent: 05-26-2023 08:59
From: Jasper Coetzee
Subject: Asset Management KPI's
I so agree with this Vic. I started a process with a man at the Zurich University of Applied Sciences. He specialises in finding the links between different primary parameters and its money effects. We tried to find good links between the normal parameters found in maintenance, and the size of the budget. But it was difficult to get meaningful relationships. If there are anyone out there that has insights regarding this, I would love to take that process up again.
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Jasper Coetzee
Terotechnica Asset Management College
Original Message:
Sent: 05-02-2023 10:53
From: Victor E Rioli
Subject: Asset Management KPI's
All excellent build's but most seem focused on the reliability expert's view of the asset not executive management. I strongly feel there's a need to bridge the gap between reliability performance and financial performance if funds are to be released to move forward with IIOT, digitalization, and AI objectives, and executive management controls the money. I love ROA for example because it ties financial impact to the asset but metrics like MTBF, while important the CRL's, falls on deaf ears with the CFO. I would also recommend concentrating on 3-5 critical metrics and never any more than 5. I visited industrials with more than 20 key metrics and asked what are the 3 most important and no one knew. They're all important! So, it seems too many metrics just dilutes the importance. Most of the major industrial gas plants I collaborated with had 3 key metrics; KWH/MCF because power was nearly 80% of their operating cost, availability of product to the customer because that's what they were paid for not reliability, and of course, safety.
My 2 cents.
Vic Rioli
Naples, Florida USA
+1-716-510-9580