When is it possible to use control valves like final elements for SIS [safety instrumented system] application? I am looking for other useful documents and technical requirements when it is possible to use only control valves as the final element instead of on/off valves and not in combination with it in the SIF [safety instrumented function] application.
In tank gauging systems for cryogenic vessels that contain liquefied gases such as LNG and LPG, reliable level measurement is vital for inventory management and custody transfer purposes, and to prevent overfills. Servo gauges have often been used to perform level...
In a Process Industry Informer article, Redundant Solenoid Valve Architecture Improves Safety and Reliability, Emerson’s Mike Howells describes the importance of these valves for safety and architectures to exercise and test these valves for ongoing reliable performance.
In a Process Engineering article, Improve the reliability of safety instrumented systems with advanced measurement technologies, Emerson’s Julie Valentine and Meha Jha share how technology advancements combined with best practices helps drive process safety improvements.
Riyaz Ali provides clarity on when to assign the SIL suitability for valves used in different scenarios (process control vs. safety shutdown) and establish criteria to assign SIL applicability for the “Final Element”.
In a recorded webinar, Smart Electric Valve Actuators for Critical Fail-Safe Applications, Emerson’s Knut Riegel and Umberto Bianchi share how these actuators are well-suited for emergency shutdown (ESD) applications.
At the Emerson Exchange Americas virtual series, Emerson’s Mike Hoyme and Stanley Af demonstrated diagnostics in the final elements within a safety instrumented function.
In a LinkedIn article, The risks and the opportunities of running an obsolete Safety Instrumented Systems (SIS), Emerson’s Mohamed Salman shares his expertise on evaluating the component subsystems in a SIS as they age.
Safety—both personnel and process safety—are always top concerns for manufacturers and producers. At the Emerson Exchange Americas Virtual Series, Emerson’s Ed Schodowski, Meha Jha, Mike Hoyme and Marcelo Dultra shared a panel to discuss innovations in personnel and process safety for refiners and chemical producers.
To summarize, mechanical equipment such as shutdown valves, control valves, actuators, and accessories such as positioners are designed keeping in mind a plant’s life of around 25 years. Though you may not find any written or stated document from any supplier or manufacturers since mechanical deterioration depends on many parameters like internal process-related conditions or external environmental conditions, operating media (air, hydraulic fluid, etc.), proper care exercised during application selection & sizing, and more.
A safety instrumented function (SIF) in a safety instrumented system (SIS) contains a sensor, logic solver and final element. All must function properly in the event of a safety demand to take the process into a safe state in coordination with other SIFs. The final...
The safety valve within a safety instrumented function (SIF) must be tested regularly to help assure proper operation in the event of a safety demand. Operators usually perform an offline full stroke test during a scheduled shutdown because of the impact of this test...
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