Activity

  • Fisher GX Control Valve Update

    Jim Cahill
    Emerson’s Kaleb Pergande, in the Fisher sliding stem valve team, provided an update on the Fisher GX Control Valve. His abstract: Just as the Fisher easy-e valve line has evolved over decades of service, so too has the GX control valve. During its first...

  • Major Difference between Foundation Fieldbus and HART Protocols

    Jim Cahill
    Over in the peer-to-peer Emerson Exchange 365 community, a question was asked in the Valve Controllers & Positioners track: Major difference between FOUNDATION Fieldbus and HART ProtocolI would like to know the major pros and cons of Fieldbus over HART...

  • High Pressure Protective Systems for Oil and Gas Producers

    Jim Cahill
    A North Carolina State University course, Introduction to Fugitive Emissions Monitoring, defines fugitive emissions as: …used in air quality control, generally refers to any emission escaping from regulated processes (sources) other than via the designed...

  • Recognition of Effective Predictive Maintenance Program

    Jim Cahill
    Control Engineering magazine has a great article and 8-minute video, A Straightforward Maintenance Strategy Yields Improved Plant Performance, featuring Monsanto Muscatine’s use of technology to move from reactive to predictive maintenance to improve...

  • Listening for Leaky Valve Seats

    Jim Cahill
    Control valves are the workhorses of process automation. They touch the process and execute the control strategy coming from the automation system. Any valve seat leakage can impact the level of control and lead to safety issues, unplanned downtime, quality...

  • Simplifying Oil and Gas Production and Well Test Piping

    Jim Cahill
    Oil & gas production facilities and offshore platforms require the ability to periodically test the individual wells for oil, water, brine, condensate, gas, and other fluids to understand the production trends and if well operating parameter adjustments...

  • Choosing the Right Surge-Relief Valve

    Jim Cahill
    Today’s guest post comes from Emerson’s Chris Womack. It’s hard to overstate the importance of choosing the right surge-relief valve for the pipeline task—and installing it properly. After all, there’s a long list of spills and other accidents that relief...

  • Sources, Causes, and Ways to Decrease Process Noise Levels

    Jim Cahill
    Those that work or have visited industrial processes know how loud they can be with the fluids flowing through the process. Emerson’s Fisher Valves & Instruments team has a great piece, The Silent Treatment—Fisher Solutions to Noise Problems. It addresses...

  • Inferring Aseptic Valve Diaphragm Maintenance

    Jim Cahill
    Emerson’s Tom Holemans shared a recent problem-solving story with me about a pharmaceutical manufacturer’s desire to reduce aseptic valve maintenance costs and increase overall availability by switching from a preventive to predictive maintenance approach...

  • 6 Maybe 7 Really Cool Things to Do With Your DIgital Valve Controller

    Jim Cahill
    How could I not attend an Emerson Exchange with a title like this? Emerson’s Rick Osborne and Caltrol’s Wayne Harbert presented this workshop. Their abstract: How to make your process better and your life easier is a pretty common goal for most of us...

  • Modernization of Control Valve Selection in Hydrofluoric Acid Alkylation Units

    Jim Cahill
    Emerson’s Rebecca Turner shared her expertise on control valve selection considerations in hydrofluoric acid alkylation units. Rebecca noted that alkylation units tend to be older units not found in more modern refineries. Hydrofluoric acid is highly...

  • New Severe Service Journal discusses custom valves for customers

    Kyley Leger
    New Severe Service Journal is out! Highlights to the latest issue include multiple customer successes: Fisher DST-G valve increases refinery output by 5,000 barrels per day Fisher EZ-OVT valve helped refinery meet new insurance and legislation requirements Custom pigging control valve Cavitation eliminated in high pressure feedwater control valve High alloy materials used on control valves Emerson…

  • Fisher Service Presentations at the 2012 Emerson Exchange in Anaheim

    Kyley Leger
    Below are the service presentations for Fisher products at the 2012 Emerson Exchange in Anaheim: “Rebuilding Valve Integrity Using General Customer Spec” Tuesday at 8:00-8:45 Wednesday at 3:15-4:00 Presenter is Zach White “Preventative Maintenance Using Valve Diagnostics” Tuesday at 1:00-1:45 Wednesday at 2:15-3:00 Presenter is Martin Tucker “Rebuild or Replace: Emerson Trim Evaluation Program Delivers Significant…

  • Q and A on Digital Valve Controllers and Solenoids in Safety Applications

    Jim Cahill
    A reader emailed some great questions to an earlier post, Clarifications on the Use of the DVC6000 SIS in Safety Applications. The post, featuring the thoughts of Emerson’s Riyaz Ali, addressed misconceptions about the use of digital valve controllers...

  • Detecting Valve Seat Leaks

    Jim Cahill
    The devices that touch your process such as control valves, measurement instrumentation, and analyzers have tremendous impact on the ability to control the process efficiently. Even the best control and advanced control strategies can’t do what they are...

  • Mining Applications Require New, More Powerful Actuator Designs

    Jim Cahill
    In today’s guest post, Emerson’s Mike McQuade shares how a mining pipeline valve application with huge torque demands necessitated a new valve actuator design to meet the challenge. Three miles above sea level in the mountains of central Peru is the Toromocho...

  • Helping to Ensure Slurry Pipeline Shutdown in Emergency Situations

    Jim Cahill
    Emerson’s Mike McQuade, a member of the Valve Automation business unit, describes the process of storing hydraulic energy for slurry pipeline shutdowns. Slurry pipelines are found in mining operations where ore is mixed with water and pumped from the...

  • Sleuthing and Solving Refinery Piping Noise

    Jim Cahill
    Fluids flowing through pipes can generate enough vibration to make the pipes sing. I saw in an Emerson Exchange 365 community post, a great Valve Magazine article, Vibration Analysis Pinpoints Valve Noise Source, by Emerson’s Daniel Eilers. Daniel is...

  • The Booming Western Australian Frontier

    Jim Cahill
    I saw the news in the Australian business publication, Financial Review, Emerson wins $67m boom town contract. The article highlights an order: …to supply control valves and valve actuators to regulate gas flow at Western Australia’s massive Gorgon liquefied...

  • Additional Clarifications on Digital Valve Controllers in Safety Applications

    Jim Cahill
    A few months ago, I attempted to clear up some misconceptions about the use of digital valve controllers in safety applications in a post, Clarifications on the Use of the DVC6000 SIS in Safety Applications. It addressed misconceptions about references...

  • Rotary Vane Actuators in Slurry Mining Applications

    Jim Cahill
    In today’s guest post, Emerson’s Mike McQuade describes slurry-mining applications where rotary vane actuators are well suited. In a slurry-type mining application, the ore is ground up into fine particles and mixed with water, so that the mixture can...

  • Controlling Variable Thickness in Rolled Steel Cooling System Applications

    Jim Cahill
    In today’s guest post, Emerson’s Eric Kuebler, a metals & mining industry manager on the Fisher valve team, describes how a steel mill solved the challenge to produce steel sheets of varying thickness and receive ongoing operational savings. Water is...

  • Clarifications on the Use of the DVC6000 SIS in Safety Applications

    Jim Cahill
    I had the chance to catch up with Emerson’s Riyaz Ali at the Emerson Exchange last month in Nashville. You may recall Riyaz from many process safety-related posts. In his conversations with process automation and safety professionals, he has been encountering...

  • Valve Magazine Article: Emerson Exchange Brings 2,800+ to Nashville

    Jim Cahill
    Valve magazine has a great recap of the recent Emerson Exchange conference in an article, Emerson Exchange Brings 2,800+ to Nashville . Author Peter Cleaveland highlights the conference and the Valve track.

  • Safety Valve and Actuator Proof Test Coverage

    Jim Cahill
    I saw an email string with a question asking if it’s possible to detect all possible failure modes in a safety valve if very intensive and intrusive tests, such as full-stroke testing, leak testing, etc. are performed. Would it be conceivable to use 100...

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