It’s interesting that the majority of the time when people talk about functional safety, they are usually thinking about hardware: what sensors to use, which logic solver, what actuator, solenoid or valve to…
It’s interesting that the majority of the time when people talk about functional safety, they are usually thinking about hardware: what sensors to use, which logic solver, what actuator, solenoid or valve to…
As many of you will know, one of the most common form of nuisance to operators working industrial controls are repeating or chattering alarms. On a typical plant, repeating alarms may account for around…
exida has traditionally been involved in industries such as oil and gas, chemicals, power generation and automotive. While these are a diverse set of industries, many of the techniques that we use such…
This is the next in a series of blogs and papers on the benefits of cyber certification. Certification provides you with the opportunity to work with an experienced cyber team here at exida, and the…
Both Process Safety Analysis (PHA) and Layer of Protection Analysis (LOPA) occur in the early stage of the Functional Safety Lifecycle, detailed in both IEC 61511 and IEC 61508.…
One of the more important tasks in the alarm management lifecycle is auditing of the alarm system configuration. Auditing preserves your investment in rationalization, checks for changes that bypassed the MOC process, and helps…
Experience is a good teacher. But how do you get the experience?
Formal classroom or online training is often available for more general skills, but on-the-job training usually provides a more in-depth path to…
On July 27, the US Chemical Safety Board (CSB) issued a Factual Update on their investigation into a release of water containing a toxic gas (hydrogen sulfide) and subsequent fatal injuries sustained at the…
I can't begin to tell you how many of our customers share with us how lucky they have been to be incident-free at their plant.
Or, because they have not had an incident in…
The Greek symbol λS represents safe or spurious failure rates in functional safety expressed in the unit of measurement of FITs which can be determined through FMEDAs. (FITs (λ) are failures per billion…
Most end users I teach in our FSE100 class are not really aware of or fully, understand when we talk about failure rates. For example, what’s a FIT mean? For those end users more…
This is the first in a series of blogs and papers on the benefits of cyber certification. Certification provides you with the opportunity to work with an experienced cyber team here at exida,.…
“…there is a belief amongst many engineers and managers that human error is both inevitable and unpredictable.
However, human error is inevitable only if people are placed in situations that emphasize human…
In recent discussions with several engineering and integrators of Safety Instrumented Systems (SIS), it’s become very clear to me that the majority I have spoken to, don’t have any form of Functional…
When we first invented the FMEDA technique in the late 1980s the biggest problem was the component failure rate and failure mode data. Still is. I picked up a well-known standard for component failure…