SLM has expanded its integration reach to include cloud based historical data integration.  While SLM itself has been cloud based for some time, most data sources for plant operational data (historians) have required on-premises connectivity for access.

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Since the standard was first issued in 2003, PSM-covered operating sites have been working hard to get to the point where all SIS functions are kept up to date with SIL Verification, SRS per function, and the regular proof testing.  Edition 2 now requires that historical performance of implemented SIS systems be fed back into PHA processes to validate assumptions which has cascading effects into SIS Design/SRS and to field instrumentation.  This is a complex, multi-disciplined process to manage even if there are no major changes to an existing process between safety and operability re-validations.

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You have seen the SLM® demonstration and are impressed. Every process safety, safety engineering and operations challenge that you threw at the demonstration team has been answered. The software has a well-designed and user friendly solution for every problem except one: How do you sell this to your management?

This paper discusses how safety lifecycle software purchases may be effectively justified to your senior management through both business and safety case studies from actual customer experiences. Your numbers will likely differ from the numbers used in these case studies, but this paper should help you understand where to look.

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As increasing attention falls upon managing Safety Instrumented Systems (SISs), industry leaders are looking for more reliable device and equipment options when designing their safety instrumented functions – the goal being to achieve the highest possible Risk Reduction Factor (RRF) per instrumented function, while minimizing construction and maintenance costs.

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Over the past 25 years, the process safety and functional safety disciplines have evolved from the implementation of safety legislation and the creation of governing authorities, to the de-development of best practices and the adoption of applicable standards. As the push for operational excellence and process safety spreads across multiple industries worldwide, organizations are continuously looking to technology to offer effective solutions.

Over that time, technological advances have provided new and effective software products that sought to answer this call; yet, emerging process safety methodologies and technical limitations of the 1990s and early 2000s reduced their scope and efficacy. Detailed here are the evolution of information-man- management technology, the benefits of software innovation over the last 25 years, and the limitations of tactical solutions that led to the search for new products.

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IEC 61511 and ISA 84.00.01-2004, Clause 10, requires that a Safety Requirements Specification (SRS) be prepared for all Safety Instrumented Systems (SISs). The Clause presents a number of items to cover in the SRS, but provides little or no guidance on how a SRS should be developed, organized, or maintained. This lack of guidance results in Operating Companies, SIS Consultants, and Engineering Companies producing a variety of SRSs that vary widely in format, content, and quality. In practice, these SRSs have become extremely expensive to produce and maintain, and really do not meet the intended functionality and value.

This white paper reviews the purpose and usage of a SRS, identifies some issues observed in SRSs produced by various organizations, provides some practical suggestions for SRS preparation, and discusses the advantages of a Data-Driven SRS.

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