Knowledge Archive
If you refer to the IEC 61508, IEC 61511 or other functional safety standards for your work, do you know that you need a functional safety plan in order to comply with the standards? Simply because the functional safety plan …
Over the last two years Risknowlogy, our certification partner, and us have successfully completed various SIL verification and certification projects in Iran. All projects included the preparation, verification and assessment of the above documents. Needless to say, every project is …
There are many manufactures of mechanical devices (valves, actuators, etc) that claim that their devices can be used in SIL 3 applications. In this post I am going to explain that most mechanical devices actually will never achieve SIL 3. In …
There are many tank farms around the world. You would think that tank farm operators would, from a business point of view, not be interested in overfilling a tank. How is is that good for business? Yet, today, many tank …
A factory acceptance test (FAT) is not the problem. An FAT, if well done, is a good thing. The problem is the majority of FATs are not well done. The purpose of an FAT is to test hardware and software …
Even though safety is in first instance a management responsibility, you can make the difference. The future of safety is in your own hands. You can make a difference by taking responsibility.
There are always 4 professionals involved in functional safety work. One to do the work, one to verify, one to assess, and one to manage.
The Functional Safety Assessor checks the plan Functional Safety Assessment (FSA) is necessary to make sure that professionals who worked on SIL projects actually did what we asked them to do. Did they follow the plan? One ore more professionals …
Nobody is perfect, everybody can make mistakes. Even the most competent professionals, with great education and years of experience can make mistake while dong their work. You would not be human if you would never make a mistakes. Where people …
What is a Safety Moment? A Safety Moment is, well a moment where you just stop what you are doing and take a moment to think or talk about a safety issue. Whether it be at work or in your personal …
SIL Lifecycle In the functional safety world we perform our work according to a lifecycle. Typical functional safety standards, like IEC 61508, IEC 61511, and so on, include the lifecycles, but they are usually not very practical. The IEC 61508 …
End users need to proof test their safety functions to make sure they still work as specified. Many end users struggle with the question how often a proof test needs to be carried out. Especially in the process industry were …
