Emerson Exchange 365
Blogs
    • 17 Mar 2017

    Focus on the Process in Your Safety Requirements Specification

    A safety requirement specification (SRS) for a safety instrumented system (SIS), as part of the IEC 61511 global safety standard [ from the exida blog ]: …incorporates all the analysis done during the Risk Assessment, HAZOP [ hazard and operability study ]/PHA [ process hazard analysis ] and LOPA [ layer of protection analysis ] reviews. Emerson’s Russell Cockman presented at an Institute of Measurement...
    • 7 Nov 2016

    Embracing Safety Requirements Specifications

    The Institute of Measurement and Control is hosting the Functional Safety 2016 conference this week in London. This conference seeks to engage practitioners from a wide variety of industrial sectors who have responsibilities in any functional safety lifecycle phase to share views and best practices. Emerson’s Russell Cockman is presenting Why embrace the concept of the Safety Requirements Specification? Here...
    • 25 Oct 2016

    Improve Safety Proof Test Capabilities with Intelligent Instrumentation

    At the Emerson Exchange conference in Austin, Emerson’s Afton Coleman , Erik Mathiason and Tonya Wyatt presented, Improve Safety Proof Test Capabilities with Intelligent Instrumentation. Their abstract: Safety Instrumented Systems are designed to be the most critical line of defense against a catastrophic failure. Ensuring that each component of the system is working properly is required, often leading to downtime...
    • 18 Oct 2016

    Safety Logic Solver Validation on Logic Updates

    The global safety standard IEC 61511 Functional safety – Safety instrumented systems for the process industry sector describes the validation process. The objective of the requirements of this clause is to validate, through inspection and testing, that the installed and commissioned safety instrumented system and its associated safety instrumented functions achieve the requirements as stated in the safety requirement...
    • 26 Aug 2016

    Testing Valves in Safety Instrumented Functions

    Safety instrumented systems are a critical part of process manufacturers and producers overall process safety management in protecting personnel, environment, equipment, property, reputation and image. In an Offshore Engineer article, Safety Instr...
    • 10 Dec 2015

    Separate versus Integral Final Element Accessories Questions

    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. Her...
    • 3 Nov 2015

    When is a Safety Integrity Level Rating of a Valve Required?

    Control valves play a large role in process control. Emerson’s Riyaz Ali shared with me that he is often asked about their use in safety instrumented functions (also known as safety loops). When asked recently, he shared an ISA Safety Division ...
    • 15 Oct 2015

    SIS CHARMS in DCS and SIS Integrated Solution in DCS Modernization Project

    Emerson’s MC Chow and Janka O’Brien teamed up with an SIS technical expert from a major refiner to tell a story of a control system and SIS modernization project. Their abstract: This session is to discuss DCS replacement projects on two near identical FCC units. One was done in the traditional non-integrated approach for a DCS and SIS, the other was done using an integrated approach with DeltaV and DeltaV...
    • 15 Oct 2015

    Increase Safety and Efficiency with New Proof Test Method

    Emerson’s Hampus Regnér and Christoffer Widahl presented Increase Safety and Efficiency With New Proof Test Method at the Denver Emerson Exchange conference. Here is their presentation abstract: A functional proof test of a high level alarm (HLA) is required as a key objective of operational safety. Testing and qualification of the HLA device is a critical aspect, which has previously not been well addressed...
    • 19 Aug 2015

    Verification in the IEC 61511 Safety Lifecycle

    I received a great question about the application of the IEC 61511 safety lifecycle . The person noted that a question was raised after the safety integrity level (SIL) study and safety requirements specification (SRS) had been performed. The question...