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Flow Control Magazine

Flow Control Magazine - July 2014 Cover

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July 2014 | Vol. XX, No. 7

Features

VIEWPOINT: Introducing the Valves & Actuators Technology Report

Matt Migliore
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Buoyed by the success of the Flowmeter Technology Report, Flow Control will be debuting a series of new Technology Reports in our print issue in the coming months—the first is our Valves & Actuators Technology Report (page 21, July 2014).


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Part V: Root Cause Revealed?

New information hints at a possible source of the mysterious reactor shutdown
David W. Spitzer
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Could it be that the liquid ammonia was entering the unit with bubbles of gas that caused the flowmeter to incorrectly measure zero flow and, in turn, cause the reactor to scram? Cooling the liquid ammonia feed reinforces this hypothesis because it reduced the number of scrams.


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Q&A: A Roundtable Discussion on Flowmeter Calibration

Industry thought-leaders share key insights & best practices
Jake Mastroianni
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Six fluid handling industry thought leaders weigh in with their insights and best practices on the dark science of flowmeter calibration.


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Key Considerations for Dry Gas Seal Performance

Why it’s important to consider abnormal conditions when specifying sealing systems
Amin Almasi
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For turbo-compressor applications, the seal panel, the seal piping arrangements, and the seal vent system details are critical for reliability, performance, safety, and operation of dry gas seals.


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Valve Regulatory Watch

What an Executive Order for improved chemical facility safety means for emergency valve & actuator applications
Luis Arango, P.E. and Jean Steckler
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Flow control and routine system shutdowns provide ongoing feedback on the effectiveness of the working system. However, designing and testing for emergency systems provides a unique set of challenges, which are more critical in light of a recent U.S. Executive Order involving chemical facility safety.
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Validating Remanufactured Control Valves

Best practices for ensuring the performance and reliability of repurposed equipment
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Remanufactured control valves can be produced with such precision and quality that they represent a viable alternative to new equipment. However, automatic control valves are not a “one size fits all.”
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Considering Control Valve Efficiency

Strategies for optimizing the energy requirement for control valves in plant systems
Joseph Dufresne, Jörg Kiesbauer, Ph.D., Jimmy Tsiantopoulos, and Domagoj Vnucec
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The discussions revolving around the scarcity of fossil fuels and increasing energy prices have refocused on the most effective action in the long term, i.e., reducing energy consumption. The right process automation technology can contribute to achieving considerable energy savings.


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PUMP GUY: Rocket Science

Proper pump operation isn’t that hard, if you have the right tools
Larry Bachus
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The instrumentation technician is a better friend to the pump reliability engineer than the vibration analyzer or the CMMS program. I’ve written these words before in more than one “Pump Guy” article, but rarely does the instrumentation tech know the influence he exercises.
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QUIZ CORNER: Flowmeter Straight-Pipe Requirements?

David W. Spitzer
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A flowmeter needs to be installed within a 10 diameter straight run. How much of the straight run should be located upstream/downstream of the flowmeter?  
 


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GLOSSARY OF TERMS: MEMS Pressure Measurement

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The terms and definitions for this word search were contributed by Macro Sensors, (www.macrosensors.com).


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