Articles

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  • Raising the bar for control system security

    Security researchers at Wurldtech Analytics are partnering with ISA to establish procedures and an operations model for the security testing and certification of products used for control.

    Eric and Joann Byres, principals, Wurldtech Analytics
    10/12/2006
  • Increase pump performance

    In this web exclusive on ChemicalProcessing.com, pump expert Ross Mackay says a key to a pump's performance is to look at the control system it's running with.

    Ross Mackay
    09/18/2006
  • Boiling water is easy as one, two, three, four

    There’s more to boiler level control than measuring level and adjusting a feedwater valve. Improved measurements and inverse response are just a few of the influences on operating boilers in a reliable manner.

    David W. Spitzer
    09/15/2006
  • Heat integration steps can present control problems

    The more energy prices rise, the more heat integration saves. However, heat integration steps can present complex control problems. Slip-ups in putting control systems in place can make operations nearly impossible. That certainly was the case at one unit using heat recovery.

    Andrew Sloley, contributing editor and Carolyn K. Hawley, VECO USA
    09/13/2006
  • Fieldbus improves control system reliability

    Profibus-PA and Foundation Fieldbus both reduce cabling cost by sharing wiring among several field instruments. They also save money by reducing the number of instrument interface cards required to connect field instruments to the control system. However, they all save money by being able to use the same field transmitter for a wide range of measured variables.

    Dick Caro
    09/11/2006
  • The rise and fall of modulation

    Why have reciprocating designs fallen out of favor relative to the rotary compressor that is so predominant today? Read about the evolution of efficient controls for compressed air systems.

    Henry Kemp
    09/11/2006
  • Process analysis gains greater online role

    Faster. Smaller. Smarter. Modular. All express the future of process analytics. And un-stoppable describes the ongoing migration of process analytical instruments to continuous, online, field-mounted use at chemical plants.

    C. Kenna Amos, contributing editor
    09/11/2006
  • HMIs evolve in process control

    New HMI technology is putting a whole new (inter)face on how operators view control systems information, while at the same time driving human error out of systems and improving safe work practices.

    Ian Nimmo, president, User Centered Design Services LLC
    09/11/2006
  • Innovations in batching, dosing and weighing

    Challenges brought on by new regulations and technical problems for batching, dosing and weighing have pushed users to find some innovative and surprising solutions beyond our own industry.

    09/05/2006
  • How to select control valves, Part 1

    When it comes to selecting and sizing control valves, the non-commercial chart in this article not only helps you pick the right one for the job, but also serves as a reference tool you can download.

    Béla Lipták, PE, CONTROL Columnist
    08/15/2006
  • Cutting the wires of communications

    Users want wireless, vendors want to sell wireless, so what’s the problem? This article tackles one of the most discussed topics: the use of wireless communications in process automation.

    Walt Boyes, Editor in Chief
    08/15/2006
  • Try before you buy

    There is another side to toll processing. It involves the companies that arguably have the best possible know-how and hardware — for the simple reason that they are the equipment manufacturers themselves, offering toll processing services that utilize their own products.

    Mike Spear, editor at large
    07/24/2006
  • Control your maintenance

    Automation systems have now reached such a high degree of reliability that many personnel at plants now take them for granted. Learn to use digital communication with your asset management tools to achieve predictive maintenance and substantial savings.

    Ian Verhappen, MTL Instruments Group
    07/12/2006
  • Keep a steady eye on measurements

    While engineers often strive to keep processes running without too much variation, measurements that don’t change may be a cause for concern not celebration, as one refinery can attest.

    Andrew Sloley, contributing editor
    06/19/2006
  • Pumping Temperature Considerations

    "Bad actor" pumps are those pumps that have trouble with frequent and repetitive failures. In many cases, the source of the problem is an ANSI pump trying valiantly to handle a liquid well beyond the range of its design rating.of 300 degs. F.

    Ross Mackay
    06/19/2006
  • Draw insights on distillation

    Residue curve mapping is a powerful tool to better understand the design and operation of distillation columns. This article describes how to use residue curve maps to check the feasibility of separation of homogeneous mixtures and for developing the conceptual design of towers.

    Raymond E. Rooks, The Dow Chemical Co.
    05/15/2006
  • BP tackles Texas City failings

    British Petroleum's tragic March 2005 explosion has been well-documented through the press. Read here to find out how that tragedy spurred the development of a new program addressing management issues at BP.

    Foster Finley and Karl Roberts, AlixPartners
    04/12/2006
  • Hard lessons worth sharing

    Editor-in-Chief Mark Rosenzweig writes that the causes of two incidents should get attention from other processors.

    Mark Rosenzweig
    01/24/2006
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