Posts Tagged ‘ISA-84’

Separate versus Integral Final Element Accessories Questions

Posted in Final Control Element, Safety on Thursday, December 10th, 2015. No comments yet
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A post from a few years ago, Separate Versus Integral Final Element Accessories in Safety Applications, continues to generate some good questions. I thought I’d make these questions and associated answers more visible in today’s post. Here’s the first question: I understood the whole description, But while calculating PFDavg, We will have to add the […]

Safety Standards and Burner Management Systems

Posted in Regulatory Compliance, Safety on Thursday, January 20th, 2011. 2 comments so far
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In prior posts on safety and regulatory standards and burner management functional safety, I highlighted some of the developments in standards for burner management systems (BMS). The DeltaV SIS process safety system recently received additional TÜV functional safety certifications: NFPA 85 – Boiler and Combustion Systems Hazards Code EN 50156-1 – Electrical equipment for furnaces […]

Control Systems for SIL 1 Safety Applications?

Posted in Safety on Friday, March 5th, 2010. 4 comments so far
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I received a great question today about the safety integrity level (SIL) of a distributed control system (DCS). In this case, the question was specific to the DeltaV system: Can you please advise if the Emerson DeltaV DCS has a SIL rating i.e. ‘0’ or ‘1’? I understand that the DeltaV SIS has a SIL […]