Upper and lower reasonability bounds for instrument failure rates can be established using a large set of FMEDA analysis results. These numbers can be used as a benchmark to help validate any failure data collection process. For any set of collected field failure data for a device, a λ of the device is calculated and compared to the benchmark. It is not uncommon for the benchmark λ and estimated λ to differ considerably. Predictive Analytics (PA) is a procedure for exploring these differences and assessing the accuracy of the estimated device λ with respect to the benchmark λ of the device. The PA process often results in improved data collection methods and more accurate field failure data.
This web seminar describes the PA method and the procedures used to validate field failure data collection processes.
It’s a new year and exida is excited to present the US & Germany dates for the exida Academy. Functional Safety I & II The course sequence of Functional Safety Engineering I & II is designed as a broad review in preparation for the Certified Functional Safety Expert (CFSE) and…
exida will be presenting and exhibiting at RAMS 2015 , The Annual Reliability and Maintainability Symposium January 26-29, 2015 in Palm Harbor, FL. Dr. William Goble, exida Principal Partner will be presenting a tutorial titled “ Overview of Functional Safety Concepts & the IEC 61508 Standard ” on Tuesday, January…
exida Webinars are back for 2015! This Wednesday (Jan 14) Dr. William Goble talks about Field Data Validation with Predictive Analytics. Upper and lower reasonability bounds for instrument failure rates can be established using a large set of FMEDA analysis results. These numbers can be used as a benchmark to…
IEC 61508 in the Safety Automation Equipment List
IEC 61508 in the Safety Automation Equipment List
Hal Thomas, exida Partner has been awarded the ISA Standards and Practices Award for his outstanding leadership and technical expertise as ISA84 Working Group 9 chairman in the development of ISA-TR84.00.09-2013, Security Countermeasures Related to SIS. Mr. Thomas has over 36 years of professional experience. He is widely recognized as…
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. They…
Todd Stauffer, exida Director of Alarm Management will be co-presenting at The Rockwell Automation Process Solutions User Group (PSUG) to be held November 17-18, 2014 in Anaheim, CA. The presentation is titled “Alarm Management: Monitoring, Assessment, and Bad Actor Resolution.” Learn more about the presentation below: TS16: Alarm Management: Monitoring,…
This webinar will feature an overview of the IEC functional safety standards and who should be using them. Specific topics include:
Adoption of IEC 61508 and IEC 61511
Functional safety standards
Safety Lifecycle
Keys documentation
Information that is supplied to end users
What are Customers Doing?
Critical Issues
Importance of Data Integrity
Product Certification
Roles and Responsibilities
It is important that a plant does not encounter spurious trips, therefore disrupting process and losing time and money. Even more important is preventing the occurrence of an accident that could result in a loss of a plant, damage to the environment, or even loss of life.
This webinar will discuss how calculating the spurious trip rate is important and what can be done with that number (saving time and money). It will also cover dangerous detected failures, and how those play a part in the Safe Failure Fraction calculation and how they are compared to spurious trips. How simple mechanical devices and/or final elements can still partake in SIL ratings by means of the 2H method of evaluation without adding additional safe failures will also be presented.
IEC 61511 in the Safety Automation Equipment List
With increased focus on risk management and regulatory compliance, companies are looking to develop and implement alarm management programs that follow good engineering practices and improve operations. But where to start? This webinar will discuss a seven-step program, based on the ISA-18.2 alarm management lifecycle, which drives continuous improvement without overtaxing your plant resources. Specific topics include:
· developing an alarm philosophy
· alarm rationalization
· implementing designed suppression and alarm shelving
· creation of alarm response procedures
· monitoring & assessment of alarm system performance
It will also show the quantifiable business results that can be achieved from an effective alarm management program.
The International Electrotechnical Commission (IEC) has just published the first edition of IEC 62682 “Management of alarm systems for the process industries,” a global standard on alarm management. This new global standard was developed based on the ANSI/ISA-18.2 standard of the same name, which was published in 2009. This means…
Does your safety development process have a split personality? Do you “talk-the-talk but not walk-the-walk?” When crunch time comes for project completion, does the mantra “whatever it takes” matter more than following the process? Does your process peel away at the seams? Getting buy-in to a rigorous process for a…
Most engineers who design and verify safety instrumented functions (SIFs) understand how hard it is to design a manual proof test with high effectiveness (also called high proof test coverage).
Proof test coverage is an important variable in Safety Instrumented System (SIS) design that can impact risk reduction by an entire SIL level. This is shown in PFDavg calculations.
This webinar will explain proof test coverage, why this is an important safety parameter, and show that the real objective is to detect failures NOT detected by automatic diagnostics. It will also explain how SIS class products will have a lower proof test coverage and why a lower proof test coverage IS NOT a bad thing.
IEC 61508 in the Safety Automation Equipment List
IEC 61508 in the Safety Automation Equipment List
IEC 61508 in the Safety Automation Equipment List
Most engineers who design and verify safety instrumented functions (SIFs) understand how hard it is to design a manual proof test with high effectiveness (also called high proof test coverage). Those folks who understand that a proof test is not likely to detect all failures never use simplified equations that…