A reliable plant is a safe plant – and a cost-effective plant
30 September 2014
Author: Ron Moore, managing partner, The RM Group
The MEETA 30th Anniversary Awards, Workshop and Conference takes place on Thursday and Friday, 21-22 November. MEETA Workshop: Thursday 21 November: ‘Reliability and Operational Excellence Masterclass’ with Ron Moore. MEETA 30th Anniversary Conference: Friday 21 November: ‘Benefit from Experience’. Booking information for both events to be released shortly – check here for updates.
During the global financial crisis, Jack Welch, chemical engineer and former General Electric CEO, suggested that you should “cut costs deeper than you’d like, fixate on operational details to wring out all the excess and focus on cash as if your life depends on it”. On the other hand, a study in 2010 by Mascio of the Standard & Poor’s 500 over an 18-year period concluded that during a recession, those who cut deepest delivered smaller profits as long as nine years after a recession.
Was Jack Welch wrong in his suggestion to cut deeper than you would like? My advice is to be tenacious about his second and third suggestions. Costs are a consequence of your systems and practices. Costs are to be managed, not cut, and reduced through waste elimination and process and productivity improvement. There is a huge difference between managing and cutting.
So if you want lower costs, you must get your processes right. Simple cost-cutting will remove resources from your system without changing the underlying system design, and performance will likely deteriorate. Unfortunately, my experience has been that when times are good, most companies cannot afford the time to allow people to participate in process improvement activities. Or, when times are bad, they cannot afford the money for process improvement. It is a dilemma.
So, how do we convince executives to make the time and money available for process improvement? Use the safety mantra. Every company that I know has stated that safety is a top priority. Few companies that I know have reliability as a top priority. However, the data are compelling that a reliable plant is a safe plant, a cost-effective plant and an environmentally sound plant.
At times, I have challenged executives regarding their position that safety is a top priority, mostly because their operational reliability is pretty ordinary. If you believe in safety, you must believe in reliability and have related policies and practices that are aggressively implemented. Let us consider the data below to support this position.
Focus on reliability and defect elimination
First of all, what are some of the indicators of a reliable operation? My experience is that these include:
- Overall equipment effectiveness (OEE) or asset utilisation (AU), both of which measure the ‘percent of ideal’ at which a plant is operating – the higher the OEE or AU, the more reliable the plant;
- Reactive/corrective maintenance – the fewer breakdowns and reactive work orders, the more reliable the operation;
- Preventive maintenance (PM) and predictive maintenance (PdM) – the more PM and PdM you do, the more reliable your plant, and
- Schedule compliance – the more disciplined you are about executing your plans, the more reliable the operation.
The data below are exemplary of a much broader set of data, not ‘one-off’ or ‘cherry-picked’. Correlation coefficients, or ‘R’, are shown on each plot. The data support the basic premise is that if you are reliable, you will be able to operate at very high levels; you will not need to be very reactive; your systems will be stable and in control; and your costs, safety and environmental performance will improve.
Figure 1 (above) is from a large US manufacturing company over a five-year period (10+ plants across the world, $7B in annual revenue). Have a look at the data and see what you think it suggests. The data have been normalised, that is, a base number was selected and all the other numbers divided by the base number. The correlation coefficient, or ‘R’, is 80% for this data, a remarkable correlation for industrial data. It can easily be argued that when the plants are running well (high asset utilisation), then injuries are less likely. You are not reacting to the most recent failure and risking injury, as well as higher costs and poorer overall performance.
Further, consider Figures 2 and 3 (below) from a large chemical plant over an eight-year period. Each data point represents one year’s worth of injuries, and the same year’s total work orders of the type indicated. Injuries per year are all injuries, including ‘first-aid’ ones. PM (preventive maintenance is time-based) and PdM (predictive maintenance is condition-based) is work done in a planned fashion and relates to a specific time-based action (e.g. lubricate bearings monthly) or to an equipment condition action (e.g. detected a fault that requires a planned repair within the next month to minimise its consequence to cost and downtime). Corrective and reactive work orders are those done in a relatively unplanned or unexpected manner, e.g. equipment failed – repair as soon as possible.
The more PM/PdM work (in control), the fewer the injuries – as the data in Figure 2 illustrates. My experience has also been that the higher percentage of PM/PdM work at a given plant, the lower the costs and the higher the OEE. Further evidence of this is provided in Figures 4 through 7, discussed later.
Next, consider Figure 3 (above), which is data from the same plant during the same time period. This time, we are measuring the number of corrective and reactive work orders in a given year and comparing it to the injuries that same year. It indicates that the more corrective and reactive work done, the higher the injury rate.
My experience has also been that the more reactive a given plant, the lower the OEE and the higher the costs. Reactive work is routinely reported to cost two to five times more than planned work. Again, further evidence of this is provided in Figures 4 through 7 below.
Figure 4 (above) is data from some 180 manufacturing plants, mostly process industries, and indicates that the more reactive a plant is, the lower the OEE and vice versa. In addition, since the total work must be 100%, the more PM and PdM work done, the higher the OEE. Anecdotal data from various discrete manufacturing plants indicates that there is a parallel line approximately 10% lower on the OEE scale of this figure. A reliable plant is typically more productive than a reactive plant. Moreover, a reliable plant is a more cost effective plant. Consider the data in Figure 5 from another large manufacturer with global operations.
In Figure 5 (above), the reliability index is based on the composite score related to over 600 questions or issues at a given plant, and that reflect its practices and processes with regard to applying reliability principles. In this data, some of the plants with lower scores in reliability still have relatively low costs, primarily because they have structural advantages. For example, if energy costs are significantly lower, then reliability can be poorer and the same relative unit costs can be achieved. Thus, you will see considerable variability in the data because of structural advantages, or disadvantages, in labour, raw material and energy costs.
That said, the data demonstrate that if you want sustainably lower costs, get your reliability processes right. If you simply cut costs, your results are not likely to be sustainable. You may see some immediate improvement over 6-12 months, but over subsequent years, there will be a price to be paid in poorer performance and higher costs.
Regarding the use of PM and PdM (condition monitoring) work, consider Figure 6 (above), where the level of condition monitoring/predictive maintenance is strongly correlated to lower maintenance costs.
Maintenance costs are reported as a percent of asset replacement value (ARV). Percent PdM is the percentage of the appropriate equipment that is being routinely monitored. Note that the data from your condition monitoring programme must be comprehensively linked to excellence in work management and the planning and scheduling function. A strong proactive approach must be used in eliminating the defects that caused the failures that were detected in the first place.
Further, the discipline necessary for work management and its relationship to making a safer work environment is illustrated in Figure 7 (above), which is data from five large manufacturing sites of yet another large global industrial manufacturer during a particular year.
Finally, reliable plants tend to be more environmentally friendly or sound. Consider Figure 8 (below), from a large chemical plant. Again, the data have been normalised, that is, a base number has been selected and all other numbers divided by it to determine the percentage of improvement.
With all this said, it is important to point out that the data have considerable variability. And that correlation is not cause and effect. However, you can infer cause and effect or a common cause to the different variables. Based on the above exemplary data, there is a strong case that can be made that a reliable plant is safe, cost effective and environmentally sound. You can get improvement in safety by just focusing on safe work practices; in costs by just focusing on costs; and in environmental performance by just focusing on environmental issues. However, if you want all three simultaneously, you must be reliable – you must do many things really well, being tenacious about all your practices.
So, how do we achieve reliability? Focus on getting the processes right. Reliable plants maximise benefits – production capability, on-time delivery, quality, lower costs, higher gross profits (that finance future investments in business and product development) and of course a growth in customer satisfaction, market share, earnings per share and share price. Reliable plants minimise risks – risk of injury, risk of production loss, risk of higher costs and risk of major incidents.
Trying to sustain earnings per share in the short term by simple cost cutting will not likely serve you well in the long term. Indeed, it is more likely to put you at greater risk of future failures. Cost management through improved processes and defect and waste elimination is critical to your success. Consider the model in Figure 9 (below).
We must eliminate the defects, and we must have discipline in our processes. Note where most defects occur that result in un-reliability, i.e. design, installation/startup and operation. Further, in existing operations, we have less control over the first three functions – design, buy and store, but we have much more control over the last three. If you are starting with new plant or equipment, use concepts of life cycle cost, total cost of ownership and running your storeroom ‘like a store’, a business – not an afterthought.
But for most, the plant they have is the plant they have. So in the short term, they should focus on improved installation and startup (after major maintenance or project efforts, or changeovers) and shutdown practices, along with better operating practices. That is where most of the defects are induced. For example, studies indicate that 1) you are 7-17 times more likely to induce defects (and environmental and safety problems) during startup than you are during normal operation; and 2) some 67% of failures occur in the infant mortality pattern, wherein the great risk of failure is during the first 30 days or so after startup.
Moreover, data from the Japanese Institute of Plant Management and other studies indicate that some 70% of defects that result in equipment and process failures are induced by poor operating practices, e.g. poor startup and shutdown, poor operation, inconsistent operation across shifts, poor changeover practices, etc. And, if you want lower operating and maintenance costs – start by eliminating the defects in operations that result in production losses and maintenance requirements; and assure a comprehensive maintenance planning and scheduling process, one driven by condition monitoring and defect elimination.
Conversely, if you remove resources from your business system (layoffs and budget cuts) before getting the right processes in place and eliminating the defects, you will be at much greater risk of not being able to perform to market expectations when the markets do bounce back. You will have ‘wrung out the costs’, but you will also have wrung out the capability to perform to market expectations. And, you will be at greater risk of injury.
Leadership, alignment and change
Supporting this model requires leadership, alignment and – almost always – cultural change. My view of leadership is that it is the ability to inspire ordinary people to consistently perform at an extraordinary level, to look forward to coming to work, every day. How? Put employees and contractors into a business system that engages and aligns their personal interest with corporate interests. Give them work they like to do; challenge them to improve it; give them the tools to improve it; put them on an improvement team; teach them problem solving methods; when they do a good job, thank them and show your appreciation; send them to training, but when they return, make sure they use the training received. In other words, engage them.
According to one study, engaged employees are three times more productive than average. According to another, eliminating the small day-to-day problems has a much bigger impact on performance than focusing on the major problems – think of hundreds of people routinely engaged in process improvement and defect elimination; think about what happens to costs, to performance.
Alignment requires the repeated articulation of a strategy, set of goals and respective roles from the CEO to the shop floor, along with measures and systems that reinforce the strategy, goals and roles. It is really hard work. According to the studies, most organisations are not very well aligned. Most functions within a given organisation operate within their silo, optimising at the suboptimal level. Having everyone think at a systems level as to the impact their decisions will have on the business as a whole – aligned to a common corporate strategy and not just their department’s – is essential.
Regarding cultural change, when asked whether people really want to change, many will reply something to the effect of, “No, they don’t; they’re stuck in their old ways.” I disagree with this view. I strongly believe that people do want to change – if given compelling reason to change, if there is something in it for them (better pay, less hassle, more secure future, etc) and if they participate in creating the changes (and thus have ownership for them). It is up to the leadership of the organisation to align the organisation and facilitate change by applying these principles and to use safety as a compelling reason for change.
To this end, and given the above data, we must have a policy for reliability, one that parallels our safety policy. Consider one company’s specific safety policy, to which I have added the words in italics:
- All injuries, and failures, are preventable.
- No task is so urgent that it cannot be done safely and reliably.
- Management must provide a safe, and reliable, work environment.
- We are each responsible for preventing injuries and failures.
- Everyone is empowered to stop unsafe, and unreliable, behaviour.
Granted, some failures have little consequence. If we have made a conscious decision that this is acceptable, then it is not a failure in our system. We intended to run to failure as part of our system design. Finally, anyone who has been through a safety initiative understands that to improve safety, you must go through a series of specific steps to drive the improvement process. These are listed below.
- Top-down leadership – clear consistent expectations;
- Bottom-up ownership and employee engagement;
- Education and training;
- Action plans and measures;
- Visual communication of expectations;
- Standards and procedures;
- Benchmarking and aggressive goals;
- Audits and assessments;
- Root cause focus;
- Rewards (and willingness to challenge non-compliance);
- Resources for supporting improvement;
- Continuous improvement expectation and process;
- A culture – a way of life
All the companies I have worked with have policies and strategies similar these related to safety. Few companies have these policies as it relates to reliability. Moreover, if CEOs of these companies truly believe that safety is a top priority, they must have similar policies for reliability. The truth is they do not. They must, else their commitment to safety is weak.
Ron Moore is managing partner of The RM Group, Inc in Knoxville, Tennessee. He is author of Making Common Sense Common Practice: Models for Manufacturing Excellence, now in its third edition, and of What Tool? When? A Management Guide for Selecting the Right Improvement Tools, now in its second edition, both from the MRO-Zone.com. He can be reached at (001) 865-675-7647 or by email at RonsRMGp@aol.com.http://www.engineersjournal.ie/2014/09/30/reliable-plant-safe-plant-cost-effective-plant/http://www.engineersjournal.ie/wp-content/uploads/2014/09/Safety-1024x680.jpghttp://www.engineersjournal.ie/wp-content/uploads/2014/09/Safety-300x300.jpgMechawards,manufacturing,MEETA