Operational Excellence - The Control Performance Monitoring End Game Executive Summary The economic challenges of the pulp and paper industry have been covered at length in the industry and technical journals. Overcapacity, decreasing demand, shrinking prices, rising costs, increased regulatory requirements, tightened capital availability, reduced staffing and difficulty attracting new talent into the industry. Clearly a challenging business environment! To tackle these challenges, many mills have begun implementing programs to drive down operating costs and improve operating reliability. The limited availability of capital has required new approaches for these improvement efforts. Leveraging existing electronic technology and existing process and equipment data is proven as a low-cost method to change the competitive position of many mills. The final goal is to achieve operational excellence and maximize the profitability of the mill. Operational Excellence - The Control Performance Monitoring End Game Table of Contents Executive Summary ................................................................................................................................................................... 1 The End Game ............................................................................................................................................................................ 4 The Structured Approach .......................................................................................................................................................... 4 The Potential Benefits ................................................................................................................................................................ 5 Additional Benefits ..................................................................................................................................................................... 5 About the Author ........................................................................................................................................................................ 7 2 Operational Excellence - The Control Performance Monitoring End Game Table of Figures Figure 1: The Process Control Opportunity ......................................................................................................................... 4 Figure 2: A Structured Approach to Optimization................................................................................................................ 5 Figure 3: Three categories of a complete Asset Management programme ....................................................................... 5 Figure 4: Three pillars of Operational Excellence ................................................................................................................ 6 3 Operational Excellence - The Control Performance Monitoring End Game The End Game So let’s talk about what the end game would look like if you are successful in your efforts to apply the tools and methods available and improve your plant performance. As everyone in the industry is aware by now, variation in all its forms has a very negative impact on operating performance. The objective is to keep the process running at optimum levels on a continuous basis. However, the sheer number of control loops in a modern mill, excessive number of operator interventions, faulty instruments and actuators, equipment wear, unplanned downtime and maintenance, all make the process of reducing variability a daunting task. So how do you get there? Control Performance Monitoring is one of the new technologies being applied to help achieve this vision of operational excellence both in terms of reducing process variation and improving reliability. Control Performance Monitor is Powered by Matrikon, which represents vendor neutrality. This product works with third-party control systems and applications. So where does this Control Performance Monitoring technology fit into your improvement programs? How do you go about implementing it to get sustainable value? How much effort is required and what kind of talent is needed? What does it look like when you’re done? What kind of improvements can you expect? All very relevant questions as you decide where to apply your very limited resources. We’ll cover the last questions in this paper and address the implementation at another time. The Structured Approach A structured approach to these improvements helps by breaking a seemingly daunting effort into smaller, more manageable tasks. Figure 1 shows a graphical approach to this effort. The first two steps are to identify and then reduce variability. This is where your process control system comes in. Remember, the role of process control is to: Reduce variation to run the process safely at its maximum rate and minimum cost. Produce products that meet customer quality requirements consistently. Make process changes as quickly as possible to reduce the amount of off-spec product. Meet or exceed all environmental requirements of the mill. In order to maximize process performance once variability has been reduced and the process stabilized, the operations team must make the decision to move setpoints and push the process closer to its constraints. The role of E&I maintenance technicians, process control engineers, and process engineers is to keep the process running at optimum levels on a continuous basis. However, it is operations that must decide how the process changes are implemented. Figure 1: The Process Control Opportunity The value of a continuous control performance monitoring tool is to reduce the time required by your scarce technical resources to achieve this objective of optimum performance on a continuous basis, and then to sustain this improved performance for long-term benefits. It does not eliminate the need for sound engineering knowledge. Rather, the tool brings additional information to plant personnel, allowing them to make better decisions faster. 4 Operational Excellence - The Control Performance Monitoring End Game 5 Successful optimization and sustained performance of the base layers (i.e.: instrumentation and regulatory control loops) now enables you to apply more advanced controls to drive the process to its constraints and sustain that performance at this new higher level. Figure 2 shows this structured approach to optimization. Figure 2: A Structured Approach to Optimization The Potential Benefits The potential impact of improved process control on mill operating performance has been documented in many studies. A paper written 1 by M.L. Brisk from Monash University reviewed the available benefits. The conclusion was that best-in-class results delivered a 7–15% reduction in operating costs through the effective application of process control. That is, without the need for capital upgrades or capacity expansion. And 20% of these benefits can be expected from tackling the most basic control system performance issues. So then the initial step in capturing this potential is at the instrumentation and regulatory control loop levels - the area served by Control Performance Monitoring. Additional Benefits One additional area of benefit for this approach to instrument and control performance management is in its value in the reliability arena. By the very nature of the tool, it is a condition‒based maintenance technology. Figure 3: Three categories of a complete Asset Management program 1 Brisk, M.L., Process Control: Potential Benefits and Wasted Opportunities, Invited Keynote Address, 5th Asian Control Conference, Melbourne, Aust., (July 2004). Operational Excellence - The Control Performance Monitoring End Game 6 With the appropriate development of maintenance work practices, this tool is the first step in moving to a predictive maintenance regime. Figure 3 shows the traditional components to a total reliability solution. The movement towards condition-based maintenance is part of most efforts to improve reliability management. Simply put, Control Performance Monitoring is condition-based maintenance for process control systems. Like all other revenue generating assets, your process control systems need maintenance if they are to meet their goals and provide sustained financial payback. Figure 4: Three pillars of Operational Excellence For more information: For more information about Control Performance Monitor, visit our website www.honeywell.com/ps or contact your Honeywell account manager. www.matrikon.com [email protected] Honeywell Process Solutions 1250 West Sam Houston Parkway South Houston, TX 77042 Lovelace Road, Southern Industrial Estate Bracknell, Berkshire, England RG12 8WD Shanghai City Centre, 100 Junyi Road Shanghai, China 20051 www.honeywell.com/ps WP 725 August 2011 © 2011 Honeywell International Inc.
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