exida explains Blog
Entries tagged with: IEC 61508
- by exida Webinars
- Tuesday, July 19, 2016
- SensorsGas Detectors
Riken Keiki Co., Ltd. SD-1OX Galvanic cell method Gas Detector
- by exida Webinars
- Wednesday, February 25, 2015
- SensorsGas Detectors
RIKEN KEIKI SD-1RI INFRARED GAS DETECTOR
- by John Yozallinas, CFSE
- Wednesday, December 03, 2014
- Software
Seat-of-your-pants Software?
I’ve had software development folks tell me that the “just do it” approach is a valid lifecycle model for SW development. In their context, this means writing the code based on limited marketing and design information and then backfilling the requirements and design specifications to describe what was done. …
- by Loren Stewart, CFSE
- Thursday, January 31, 2019
- Functional Safety
Setting Goals for 2019: Are You Thinking About Functional Safety?
When I went to set my goals for 2019, I set both personal and professional goals. One of my professional goals is to clean off my desk, but another is to get more people to think about functional safety before an accident occurs, instead of when they are normally…
- by Dr. William Goble, CFSE
- Thursday, May 02, 2013
- Functional Safety
Setting the Pace
Going back in time to the turn of the century (remember 2000?), the amount and quality of failure data threatened to doom the whole probabilistic analysis approach. I recall a letter in IEEE Spectrum magazine from Patrick D. O’Conner, a well known reliability engineering author, who expressed the…
- by Dr. William Goble, CFSE
- Monday, April 11, 2016
- Certification
Site Safety Index™ (SSI) – A Simple Model for Site Variations in Safety
In several of our technical papers over the years, we have noticed that failure rates for the manufacturer, model number are different at different sites, even when the processes were quite similar. When I have mentioned this to end users and manufacturers, often the response is “Yes, I have…
- by John Yozallinas, CFSE
- Thursday, February 16, 2017
- Functional Safety
So what does Interference-Free mean? And why do we care?
An Interference-Free component, either as an interface or a defined functional area, is a system component that is neither safety critical (C3) nor safety relevant (C2), but interfaces with such subsystems.
If a component has been shown to be interference free (C1), then it has been demonstrated that no…
- by John Yozallinas, CFSE
- Wednesday, March 06, 2013
- Software
So What’s an Impact Analysis?
It doesn’t take much to remember a time you wish you had “looked before you leaped.” The time you bought furniture that would not fit through the doorway, or the small tree you planted whose roots are now cracking through the sidewalk. Don’t you wish you had given more…
- by Jonathan Moore
- Thursday, March 01, 2018
- Functional Safety
Software Metrics
Both IEC 61508 and ISO 26262 highly recommend a modular approach to software development. One question that comes up regularly asks if there are quantitative targets for determining whether sufficient progress has been achieved by software engineers.
