Exida's Dr. William Goble and Emerson's Afton Coleman presented Addressing Partial Stroke Testing Fears - Avoiding False Trips / Risk Through... Their abstract: It is not uncommon for some users to perform partial stroke testing (PST) using cumbersome mechanical or...
Plants tend to run longer in between turnarounds, or the period of time in which a plant is shut down for maintenance. These turnaround time intervals can be three, four, five, or even longer depending on the process and the industry. Emerson's Riyaz Ali, whom you may...
A few weeks ago, I highlighted a thread from the ISA Safety email list on partial stroke testing using control valve positioners. A few weeks later, this thread is still going strong. Emerson's Riyaz Ali sent me some of the recent exchanges. A concern was expressed...
A question came into the ISA's Safety email list concerning the use of valve positioners in partial stroke tests for valves used in safety shutdown applications. The person asking the question wrote: I was informed that PST using positioner such as the Fisher/Emerson...
Update: Unfortunately the video had to be removed. I'll add another update to the post when the existing, revised, or new video becomes available. I apologize for the inconvenience. Emerson Process Management's Fisher Valve team has opened up a channel, Fisher Control...
My good friend Riyaz Ali, whom you may recall from earlier process safety and digital valve controller-related posts, was kind enough to send me an article he's recently written. The subject is performance diagnostics for control valves. Since control valves are in...
Industrial Automation Insider's Andrew Bond wrote an article for ControlGlobal.com, DVCs Drive Digitization of the Process Industries. It describes the introduction of digital valve controllers by Emerson's Fisher business in the 1990s and their widespread use--more...
I don't want to admit how long I've know Emerson's Kurtis Jensen, but it does goes back to the pre-Emerson days at Fisher Controls. Kurtis is an instrument product manager for the Fisher Valve and Valve Automation businesses. He's penned a great article for Valve...
Handheld field communicators have been the tool of maintenance technicians to configure and calibrate their smart field devices since the 1980s. With technology advancements and by taking a fresh look at handheld usability with a lens on the problems maintenance techs...
Being lousy at secrets, I thought I'd share some news in an email from ModelingAndControl.com's Greg McMillan. He's just completed a book, Essentials of Modern Measurements and Final Elements for the Process Industry: A Guide to Design, Configuration, Installation,...
At last week's Emerson Exchange, John Rezabek of ISP presented Wireless or Fieldbus? You might recall John from his columns in Control magazine and on the ControlGlobal.com site. He presented a cost comparison for a plant expansion considering Foundation fieldbus...
Emerson's Riyaz Ali, whom you may recall from earlier posts, wrote an Inside Functional Safety article recently titled, Digital Technology: A remedy for sick shutdown valves in Safety Instrumented System (SIS) applications. The paper is available for purchase from...
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