Hey everybody. I hope this blog finds you, your family, and your colleagues well. At exida, we appreciate the trust you place in our solutions and services to support you in achieving your
Hey everybody. I hope this blog finds you, your family, and your colleagues well. At exida, we appreciate the trust you place in our solutions and services to support you in achieving your
As discussed in Part I, bow tie diagrams provide an easy-to-understand visual representation of risk management information (hazards, potential consequences, barriers, degradation factors and controls). In this article we examine the applicability of…
The Greek symbol lambda, λ, represents failure rates in functional safety, usually expressed in the unit of measurement of FITS.
λ can be expressed as a total failure rate for a device (λT), or it…
exida, the global leader in functional safety, industrial automation cybersecurity, and alarm management is thrilled to announce a new online testing platform for their CFSE (Certified Functional Safety Expert) and Read More...
Creating an alarm philosophy document is often the entry point into the ISA-18.2/IEC 62682 alarm management lifecycle. Many tasked with developing one are discouraged by its length and the barriers it creates.…
Failures In Time or Failure UnIT
FITs is the number of failures per billion hours for a piece of equipment.
It is mentioned in both IEC 61508 and IEC 61511 standards as a preferred unit of measurement…
It is tough to receive an email with this message from a prospective CFSE candidate. I know that when I have failed exams, I want to understand what was wrong so I can…
Failure rates are the number of failures per unit time for a piece of equipment which are usually assumed to be a constant value. They can be broken down into several categories, such as…
The bow tie methodology, originally developed by ICI in the late 1970’s, has seen increasing industry adoption over the last 20 years. Bow tie diagrams build on the “Swiss Cheese Model” of hazard escalation…
In today’s day and age, functional safety certificate and certification programs are becoming common. There are many to choose from with their own set of requirements and expectations.
So how do we know which one…
What is Stiction?
Stiction is the resistance to the start of motion usually measured as the difference between the external force being applied in order to overcome the static friction…
You may be wondering why this question is being asked? Isn’t it obvious that systematic issues are important and need to be considered? It may be that some of you reading this blog may not even…
A cycle test is done on a set of products (>20) until 10% of the units under test fail.
The number of cycles is converted to a time period by knowing the cycles per…
The “ISO 26262 Road vehicles – Functional safety” specification defines the concepts of “Independence”, “Interference” and other terms which can be a little confusing. This discussion will try to make the concepts clearer.
…
The B10 method uses cycle test data to predict failure rates.
A cycle test is done on a set of products (>20) until 10% of the units under test fail. The number of cycles until…