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IMTEX develops innovative PST solution
IMTEX Controls has developed an innovative solution for partial stroke testing of valves, says Engineering Manager Paul Turner....
AOV Manager Marie Murphy puts safety first and foremost
It may be an obvious statement but they take safety very, very seriously at nuclear power plants. Equipment and processes are continually checked to ensure the plant functions as it should. Visiting the USA, Valve World caught up with AOV Program Manager Marie Murphy to ask what her job entails....
ATEX, does it affect you?
From July 1st 2003 the ATEX directive became mandatory throughout the European Economic Area for all installations with potentially explosive atmospheres and for equipment installed in these installations. Chris Wiggins sets out how this could affect actuator makers and users....
Fieldbus Foundation announces SIF White Paper
At the end of 2008, the Fieldbus Foundation made a new white paper on FOUNDATION™ Safety Instrumented Functions (SIF) available from its website. Authored by the ARC Advisory Group, this paper describes the implications of FOUNDATION SIF (FF-SIF) technology for the global plant safety system market and end users....
Increase safety without disrupting the process
A Safety Instrumented System (SIS) is a control loop designed to protect plant, equipment and people against the risks associated with the processing of toxic or flammable fluids. In this article for Valve World, Bruce Penning explains how SIS is used and what advantages it has for the engineers....
Increased safety using partial stroke plus solenoid valve tests
In this lecture various applications are described how partial stroke testing and solenoid tests can be run automatically using an intelligent valve positioner. Even a solution without having the need to use a solenoid valve is described, in which it is substituted by an intelligent positioner....
Increasing safety in a cost-efficient way
Almost a decade has passed since the launch of the first automatic partial-stroke testing device, Metso's Neles ValvGuard (TM) VG8000. This article, by Juha Kivela, discusses further developments in PST technology....
Reconsidering mechanical devices for partial stroke testing
At the Valve World 2008 Conference, Michael Mitchell (DynaTorque) challenged the audience to consider a less complex solution that delivers an acceptable methodology for PST. He says that a new generation of PST devices can provide a simpler, less costly and, in many views, a safer and more reliable solution to PST....
Safety in Solenoids
David Sear reports from a recent open day organised by ASCO Numatics....
Safety systems for tank overfill protection
The consequences of spills at processing, transportation and handling facilities can be disastrous to corporate assets and fatal to civilian and facility personnel. This article looks at how most of these overfill events could have been averted or at least significantly mitigated with a Safety Instrumented System (SIS)....
SIL made simple
Michael Mitchell (Cameron Flow Control) explains in plain language what SIL means, how SIL is determined, SIL and failure rates and how SIL applies to particular products....
The benefits of valve signatures and partial stroke testing
In this technical paper, Paul Gruhn and Derek Essam argue that partial stroke valve testing is an effective technique for enabling a single valve to achieve high SIL performance. They also focus on a specific aspect of testing - that of valve signatures....
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