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  • Final control

    What’s the latest on control valves? Here's a look at the current marketplace for the final element that all control stuff is aimed at—the control valve that produces the end result.

    Walt Boyes, Editor in Chief
  • Achieve continuous safety improvement

    Enhancing safety performance requires diligence and unrelenting effort. The Independent Safety Review Panel’s recently released report on the safety culture and practices at BP’s U.S. refineries where a March 2005 explosion occurred in Texas City, Texas indicates similar failings are likely elsewhere in the industry. Learn what can be done to enhance continuous safety improvement.

    Angela Summers, SIS-TECH Solutions
  • NeSSI taxis for takeoff

    Though acceptance and networking hurdles remain, the New Sampling/Sensor Initiative (NeSSI) is starting to emerge in real-world, standardized, modular process control applications.

    Jim Montague, Executive Editor
  • The evolution of plant automation

    Understanding the purpose of control and safety systems helps users ensure each is appropriately optimized. The duties of the SIS are to protect the people, environment and assets against unsafe conditions.

    Angela Summers, PhD, PE, founder of SIS-TECH Solutions
  • 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
  • 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
  • The DCS spirit lives on everywhere

    Classic distributed control systems typically remain only in high-availability refining and power applications, but their strategies and capabilities persist in descendants and today’s sophisticated networks.

    Jim Montague, Executive Editor
  • Best practices in control system migration

    Migration from your old control system to a new one is as an inevitable as death and taxes. But, the key to minimizing the pain is to abide by the control system migration best practices listed here.

    Dan Hebert, PE, Senior Technical Editor
  • 10 tips for diagnosing control valve problems

    To make the most of diagnostic equipment used in chemical processing, technicians must stretch their knowledge of control valves and related diagnostic equipment that keeps tabs on valve health and safety.

    David W. Douglas
  • Exporters get reporting relief

    EPA eases annual reporting requirements and thresholds, and exporters are feeling relief, according to Lynn Bergeson in her monthly Compliance Advisor column.

    Lynn Bergeson, regulatory editor
  • pH sensor stands up to tough conditions

    Design provides improved reliability in a polymer-precursor batch reactor. Sensors must respond quickly and survive a harsh environment. Poor probe reliability can make the difference between a process that makes money and one that doesn’t.

    Kyle Becker, Polychemie
  • Distillation control and optimization, Part 3

    Control's Béla Lipták continues his series on control of distillation processes, this time focusing on managing reboiler flow, temperature, feed rate, loading and reflux for economy, stability and safety.

    Béla Lipták, PE, CONTROL Columnist
  • How to select control valves, Part 3

    When it comes to selecting and sizing control valves, gain and stability are key characteristics. The non-commercial valve selection chart in this article serves as a reference tool you can download.

    Béla Lipták, Contributing Writer
  • Flowmeters clean and dirty contributor David W. Spitzer provides a look from a process automation perspective at how magmeters and Venturi meters are vying with ultrasonics for clean and dirty water applications.

    David W. Spitzer
  • Avoid trouble with slurries

    Handling slurries (a mix of solids and liquids), should be based on experience and experiments, not theory. Much of the knowledge obtained from pneumatic conveyors and fluidization systems can be used in understanding slurries.

    Thomas R. Blackwood, Healthsite Associates
  • Keep measurements on the level

    This article looks at six technologies — mechanical floats and displacers, differential pressure, capacitance, ultrasonic, radar, and guided wave radar — that are used most often for automated control, and provides practical guidance for choosing among them.

    Jerry Boisvert, Siemens Energy & Automation
  • Choosing motor controls and drives

    In any industrial control application, using the right drives and motor controls can make or break the project, and also can make a huge difference in how well those applications perform.

  • How to select control valves, Part 2

    When it comes to selecting and sizing control valves and positioners, this article not only helps you pick the right one for the right job, but also includes a valuable valve selection chart you can download!

    Béla Lipták, PE, CONTROL Columnist
  • The FRETT approach to pump problems

    Some U.S. oil refineries repair their centrifugal pumps every three years while other refineries enjoy an average repair interval of 10 years. Learn about the highest-performing refineries and other petrochemical companies that have significantly reduced pump failures, and how you can obtain the same results.

    Heinz P. Bloch, P.E.
  • 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
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