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It is 2020 yet there has been little movement/understanding on engineering issues and field devices. The irony is that cyber security exists at the network layer where you have short-term glitches, but there is no cyber security where you go “boom in the night” and can have months to years of down time and deaths.…
There's a new paper in the Safety Instrumented System (SIS) section of PII's Free Resources area, entitled SIL-3, SIL-2, and Unicorns (There Is a High Probability Your SIL 2 and SIL 3 SIFs Have No Better Performance Than SIL 1). This paper shows that specific human error during testing, calibration
One of the key indicators of competency besides experience is training. This article discusses some of the training options available to develop skills in SIS engineering, and to help engineers become competent in this area to meet the requirements of IEC 61511.
How reliability data validation (RDV) should be applied to properly determine if safety system devices are individually capable of satisfying the target safety integrity level (SIL) rating, and verify if the whole safety system implementation performs according to design.
There has been considerable debate about the appropriate level of connectivity (if any) between safety instrumented systems (SIS) and basic process control systems (BPCS), most recently with respect to Who Is Accountable for Safety Systems’ Cybersecurity.
The world of functional safety can be a confusing place for an end-user. Industry standards are continually changing, and they are not always clear or consistent. There are hundreds of vendors and consultants that may or may not be able to offer good products and advice.
Meanwhile, governments and the public grow increasingly intolerant of incidents and near misses. Traditional approaches to process safety are changing and becoming more sophisticated.
More than ever, it is critical for instrumentation and control systems engineers to have a firm understanding of the theory and practical aspects of process safety and safety instrumented systems.
The SISEngineer site offers unbiased information, tools, and training to prepare today's engineers to become technical leaders and advocates for safety.
If you enjoy this site and are interested in self-driving car safety, please checkout our sister site dedicated to automotive functional safety.