Articles

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  • Get full value from partial stroking

    There are two main drivers for partial stroking of valves in safety systems: the desire to extend manual test intervals to as long as possible; and to reduce the amount of redundant hardware required for higher safety integrity levels. Like most things in life, it all boils down to one thing: trying to save money.

    Paul Gruhn, ICS Triplex
    03/20/2007
  • Tips and traps

    Following some partial stroke testing tips can make the process easier. Read on for more tips.

    Paul Gruhn, ICS Triplex
    03/20/2007
  • Sample pump eliminates emissions

    A compact system significantly improves analyzer accuracy. This innovative turnkey solution for analyzer emissions is a solid-state pump with an ultra-sensitive pressure regulator that mixes a compatible gas with the analyzer samples to achieve a constant vent header pressure — even during times of plant upset.

    Kazi Hassa, Parker Hannifin
    03/20/2007
  • Compelling reasons to choose an insertion magnetic flow sensor

    Measuring flow rates and volumes of water and chemicals in the water, wastewater and chemical treatment industries requires the latest, simple to use and cost-effective technology that can keep up with the rigorous demands of the various applications.

    03/14/2007
  • Can you trust your data?

    To make sense of supply chain data requires consolidating the information into a central repository and then using tools or applications to pinpoint errors and inconsistencies. It also includes taking possible corrective actions that enhance overall quality and confidence in the raw information.

    Andrew Nelson, Matrikon Inc.
    03/14/2007
  • Don’t shackle yourself to the wrong platform

    Today, process data are readily available at many levels, from instrumentation to higher-level data historians and OPC servers. Choosing the right platform can be key to successfully implementing robust and maintainable process calculations at your company.

    Dane Overfield, Exele Information Systems
    03/14/2007
  • Make your portable mixer work for you

    Understanding the fundamentals of fluid agitation can help meet the customer’s requirement and the processor’s need for efficiency. While portable mixers have been around for years, they often aren’t used to their full potential. Knowing the basics of mixing and flow patterns can help you get more out of your mixer.

    David Dickey, MixTech, Inc. and Lydia Booth Fenley, Illes Seasonings & Flavors
    03/06/2007
  • Pressure control optimization

    Floating pressure control means that, at minimum pressure, the heat required at the reboiler is minimized, its capacity is increased, and fouling is reduced.

    Béla Lipták, PE, CONTROL Columnist
    03/03/2007
  • Are companies ready to break the cycle?

    Executives say chemical industry must focus more on employee retention, according to Editor in Chief Mark Rosenzweig, in his monthly column.

    Mark Rosenzweig, editor in chief
    03/01/2007
  • Pressure tests can spur successful start-up

    Push it: if it breaks it probably needed to be replaced, says Dirk Williard, in this month's Field Notes column. Doing so can help improve your processes.

    Dirk Willard, senior editor
    03/01/2007
  • Use a portfolio approach to energy management

    A business plan for industrial energy management is remarkably similar to financial planning, says Christopher Russell in his Energy Saver column.

    Christopher Russell, contributing editor
    03/01/2007
  • Plants get help in boosting reliability

    More and more companies are placing greater emphasis on maintenance and seeking help from vendors to boost the effectiveness of their efforts, as some recent major investment decisions demonstrate. Many automation companies now are benefiting by building up asset management services alongside process control capabilities.

    Mike Spear, editor at large
    02/26/2007
  • How hydraulic modeling can improve the efficiency of your pump systems

    In spite of their large operating cost, most pump systems are inefficient by design. Among the common design problems are non-optimal pipe sizing, control valve utilization and, perhaps most common, incorrectly sized pumps. How a pump operates depends on the system, so improvements must focus on the system as a whole.

    Tom Glassen
    02/20/2007
  • Take the pressure off pressure control

    Linkage of other variables can stymie hot vapor bypass schemes, according to Andrew Sloley's Plant InSites column.

    Andrew Sloley, contributing editor
    02/19/2007
  • Equipment & Services: February

    Chemical Processing's Equipment & Services feature provides a variety of production equipment, supplier services and parts.

    02/19/2007
  • Pacify the Fear of a Changing Work Environment

    Understanding how changing a work environment affects people can reduce accidents. Management of Change (MOC) has been one of the hardest of the PSM requirements for industry to master. Making matters worse, it’s rarely applied to people and organization changes. But there are proven approaches.

    Ian Nimmo, User Centered Design Services, LLC
    02/19/2007
  • Rely on an Ombudsman for a Smoother Project

    Working with someone who speaks the operator’s language will avoid problems, according to Dirk Willard, in this month's Field Notes column.

    Dirk Willard, senior editor
    02/12/2007
  • Use a multifaceted approach to manage your energy costs

    One or two tools alone won’t allow you to maximize results, but this list of six common tools will help, according the Christopher Russell in this month's Energy Saver column.

    Christopher Russell, contributing editor
    02/12/2007
  • Debunk plant myths about diagnostics

    Your current control system can probably do more than you think. Everybody can agree that diagnostics are a good thing — they can identify problems early, and keep the plant running at peak performance. Learn how your existing control systems and analog instruments can deliver diagnostic capabilities, at a fraction of the cost of system or instrument replacements.

    George Buckbee, ExperTune, Inc.
    02/08/2007
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