The safety instrumented system PDF was written to provide an overview of key terminology and aspects of the safety life-cycle according to IEC 61511 edition 2. The eBook is aimed at process industry functional safety applications of safety instrumented systems - SIS.It takes many years to master the technical aspects
If you own or operate any electrical / electronic or programmable system that has safety functions with a SIL (safety integrity level) rating, then you need to conduct periodic functional safety audit or FSA 4.I hear you say, "functional safety audits snd functional safety assessments are not a requirement, our
I often get asked how to become a certified functional safety professional or certified functional safety expert (CFSP or CFSE). Well, here's a blog which explains the background, what your options are, and how much preparation time you'll need to put in.
BUYER BEWARE! There are many types of course currently marketed as "ONLINE", that sadly do not make meet the simplest test of what this actually suggests. I have followed this carefully over the past 10 years, and the variability is still quite staggering. There are too many BAD and UGLY
Functional Safety Assessment may be a dry topic at the best of times, so much so that I took it as a personal challenge to try and write a paper about it!The paper highlights experiences from several different projects and concludes with some simple recommendations to save time, money and
What happens when a project is not well planned, plans are not properly communicated or accountabilities are unclear? Safety-related projects are essentially no different to any other project in terms of management, but the issue of accountability is a clear differentiator. When it goes wrong, people, the environment and finances
When it comes to deciding on using hard-wired logic or a Programmable Logic Controller (PLC) for a safety instrumented system logic solver design, there are some clear positive and negatives to each approach. So, how do you decide whether a programmable system is advisable or necessary given the possibility for cyber
Why do people attend training courses, and what can online Cloud based E-Learning provide for your competence management system that a traditional classroom course cannot?Why does any employee attend a training course? Very often the main answer to the question is that the employer requires them to, usually to enable
Achieving complete compliance with "risk-based" functional safety standards like IEC 61511 is a great objective to have, but is it, in fact, possible? Experience with process industry functional safety assessment and audit would suggest that 100% compliance is NOT realistic when there are approximately 593 clauses, sub-clauses and bullet-point requirements
If you're responsible for a Safety Instrumented System (SIS) with Safety Integrity Level (SIL) rated functions, then you might be wondering where to start with cybersecurity standards for industrial automation and control systems (IACS). Read this blog to find out my personal take.
Perhaps you have installed safety systems which date from the 1990's or early turn of this century. If so, you might be wondering whether you need to follow IEC 61511 edition 2 for Safety Integrity Level (SIL) conformance?If your safety system installation pre-dates 2004 then you are highly unlikely to
How do you get valued staff and contractors to engage with Process Safety, Functional Safety and similar "tricky" subjects? Send them on a training course or ask them to take some online training? How about both? An online plus classroom experience might just be the answer to getting a step-change
The headline, extracted from a popular song lyric*, uses the double-negative "don't need no", quite intentionally - to help emphasize a point. Whatever the song writer meant I'll leave to others to decipher, but for my purposes hopefully it will get attention.
The recently updated process sector safety instrumented system (SIS) standard IEC 61511 now requires that a "security risk assessment is carried out to identify security vulnerabilities of the SIS" . But how should such an assessment be approached*, and what can you do to prepare for it?There have been well
Read on to see the software buyer's guide table...a comparison of 4 cloud-based software solutions. This blog will will look at the main reasons why using such software is better than many traditional approaches, which companies are working in the domain, and the questions you should ask before you choose
Without effective functional safety assessment and audit, you may never know whether your safety system will perform when it is really needed. That is perhaps a bold statement, but read on if you think you disagree...
For the third blog of this series, the focus is on proof testing. This article will look at what proof testing is, why it's needed, and give some outline examples of proof test procedure requirements. It will also introduce some issues I've personally experienced during audits and assessments of proof test
Operation and maintenance procedures for Safety Instrumented Systems (SIS) will vary from company to company. However, there are some specific requirements that need to be covered for safe continued operation.The first blog on this topic discussed general operation and maintenance (O&M) requirements for sustaining the integrity of a SIS. This
How do you ensure a Safety Instrumented System in operation will maintain its original design integrity for a lifetime of 15+ years?The IEC 61511 (2016) safety life-cycle provides some brief guidance for operation and maintenance of a safety instrumented system (SIS) in clause 16. The stated objectives are to ensure
The process sector standard IEC 61511 is aimed at applications where instrumented systems are used for risk reduction in the process industry sector - including applications in chemicals, oil and gas, pulp and paper, pharmaceutical manufacturing, food and beverage, and non-nuclear power generation. Reduction of risk can be applied in
Hazardous process industry sites must carry out periodic functional safety assessment (FSA) of safety instrumented systems. But why?Many hazardous process industry sites have viewed Functional Safety Assessment (FSA) as a project activity to be completed when a new safety instrumented system (SIS) gets installed, and of course, that is absolutely
Since launching SIS Foundation, our IChemE accredited online Safety Instrumented Systems (SIS) e-Learning course in 2016, we have now reached customers as far and wide as Australia, Canada, Malaysia, Oman, Qatar, Saudi Arabia, UAE, USA, and of course the UK where we're based. Our SIS e-Learning topics include many popular process safety
My Father used to say this a lot. "There's no such thing as a free lunch". I never got the meaning as a child...all my lunches seemed to be free? Sadly, he passed away when I was in my teens, so I guess I never really understood the real meaning
Process accident history is awash with many examples of apparent incompetence involving safety instrumented systems (and other protection layers), some of them resulting in literally billions of dollars of losses, not to mention large environmental impact and loss of human life.So, developing and maintaining competence in the area of important
LoPA -Layer of Protection AnalysisProcess facilities should be designed as far as possible to be inherently safe. Inherent safety involves reducing hazardous inventory and making the process mechanical design sufficiently robust.
Functional Safety Assessment (FSA) has been a requirement in IEC 61511 - Safety Instrumented Systems for the process industry sector, since the first edition published back in 2003. An FSA is one of the clear activities required to claim compliance with the IEC 61511 standard. The stated objective is to
IChemE independently assessed the Safety Instrumented Systems (SIS) Foundation Online Training course and materials benchmarked against their internationally recognised professional standards.The course is now part of an exclusive range of training programmes endorsed by IChemE to support the professional development of chemical, process and biochemical engineers. Justin Blades, IChemE deputy
The safety life-cycle, sometimes spelled lifecycle, was conceived after the Health and Safety Executive (HSE - a UK government agency) found that accidents involving control systems could be attributed to various different root causes.The highest root cause of accidents was found to be poor specification of the system (44% of