Emerson’s Fisher control valves have received SIL 3 certification to IEC 61508 standards.
Emerson is reportedly the first control valve manufacturer to achieve this independent third party certification which eliminates the need for prior use methodology while proving that the company’s design process, engineering and testing fully comply with IEC 61508. This certification enables users to boost plant availability and safety by using the technology-leading Fisher GX, Vee-ball, easy-e and HP valves in safety instrumented systems (SIS) in up to SIL 3 loops, per IEC 61508.
The Fisher Vee-ball valve is one of several ranges of valve from Emerson Process Management to achieve certification
The four control valve ranges have been certified by independent third party safety professionals EXIDA for on/off operation within a SIL 3 safety instrumented function. The valves can be packaged with the already successful SIL 3 certified Fisher FIELDVUE DVC6000 SIS digital valve controller that enhances the safety function and monitors the health of the entire final control assembly, a core component of Emerson’s smart SIS complete safety loop offering.
Many process plants already rely on Fisher control valves from Emerson for reliable and consistent performance in process control. The extensive experience of end-users with Fisher valves bear testimony to their quality and reliability in general service applications as well as in more demanding severe service applications. This is important because, when designing SIS functions, choosing the right control valve is a pre-requisite. According to Emerson only Fisher control valves offer the combined benefits of proven process control excellence and safety-certification to IEC 61508.
Fisher valves are components of the organisation’s smart SIS safety management solution, an extension of the company’s PlantWeb digital plant architecture. Emerson’s smart SIS provides an integrated approach to complete safety loops — from sensor to logicsolver to final control element. The smart SIS solution enables customers to implement safer facilities, improve availability, lower life-cycle costs, and ease regulatory compliance. The smart SIS system components include the Fisher certified valves or SIL-PAC final control solution with FIELDVUE DVC6000 SIS, plus Rosemount and Micro Motion certified and proven-in-use devices, the DeltaV SIS system, and the AMS Suite: Intelligent Device Manager.
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