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Dembla Valves Limited - Triple Offset Butterfly Valves
IEC 61508 in the Safety Automation Equipment List
Dembla Valves Limited - Double Offset Butterfly Valves
IEC 61508 in the Safety Automation Equipment List
News Item: exida Announces the Launch of the SILSafe Data Web Site
exida has launched the web site www.silsafedata.com . SILSafe Data is a web site listing a number of product categories used in process control and the expected range of failure rates for process industry applications. The use of realistic and application appropriate failure rate data has a significant impact on…
Recorded Webinars: Mechanical Failure Rates: Explaining the Differences
This webinar first describes the distinction between failure rate prediction and estimation methods in general. It then gives details about the procedures used to obtain generic failure rates for certain mechanical equipment using FMEDA predictions and OREDA estimations along with other methods used in industry today. The results of the two methods when applied to a number of specific equipment items are compared and, when differences in the results exist between the two methods, plausible explanations for differences are provided. Equipment examples include a representative of topside equipment items and representative subsea equipment items. The relative merits of each method are discussed along with comparisons to industry databases and field studies. Finally we will discuss what is a realistic failure rate for mechanical devices and what to do if you find yourself looking at unrealistic numbers.
Westlock Controls - Digital EPIC2 Control Transmitter
IEC 61508 in the Safety Automation Equipment List
White Paper: Combining field failure data with new instrument design margins to predict failure rates
Performance based functional safety standards like IEC 61511 offer many advantages including the opportunity to optimize and upgrade Safety Instrumented System 〈SIS〉 designs. But performance calculation depends upon realistic failure data for instruments used. A predictive analysis technique called Failure Modes Effects and Diagnostic Analysis (FMEDA) has been developed along…
White Paper: Using Predictive Analytic failure rate models to validate field failure data collection processes
This paper introduces a benchmarking technique we call Predictive Analytics (PA). Using a large set of data from FMEDA results in combination with validated field failure data, upper and lower reasonability bounds for instrument device failure rates can be established. These bounds can be used as a benchmark to help…
News Item: exida Presenting at 2015 ICS Cyber Security Conference
Mike Medoff, exida Senior Safety Engineer will be presenting at the 2015 ICS Cyber Security Conference to be held October 26-29, 2015 in Atlanta, GA. Learn more about the presentation below: Is Your Equipment Security Certified? Certification is a term thrown around that means many things in many contexts. In…
News Item: exida is Pleased to Announce the Winners of the 2015 Safety Awards
exida, the global leader in functional safety and cybersecurity certification for the process industries, is pleased to announce the winners of their 2015 Safety Awards. “The products and processes that were nominated for this year’s awards are all extremely innovative and exhibit exceptional work,” says Mike Medoff, exida senior safety…
Blog Entry: Best Practices in Achieving Functional Safety in Turbine Applications - Part 1
The adoption of the functional safety standards continues to gain momentum in turbine applications. Both industrial and power turbine sites are now requiring compliance to IEC 61511. This blog will review both technical requirements and market trends related to functional safety system design. Market trends will cover which standards are…
News Item: exida Presenting at System Safety and Cyber Security 2015
Iwan van Beurden, exida Chief Technology Officer will be presenting at the System Safety and Cyber Security 2015, to be held October 20-22, 2015 in Bristol, UK. The presentation is titled: Predictive Analytics: Using Field Failure Data to Predict Failure Rates for SIS Verification. Performance based functional safety standards like…
Emerson Process Management Regulator Technologies - BM6X Series Slam Shut Valve
IEC 61508 in the Safety Automation Equipment List
Bifold Fluidpower Ltd. - Quick Exhaust Valves
IEC 61508 in the Safety Automation Equipment List
Recorded Webinars: Modeling site specific safety and reliability – The Site Safety Index
As a result of several field failure studies, evidence is clear that failure rates for the same product vary from site to site. The ratio ranged from 1.2X to 2X based on data to date. Therefore we conclude that random failures can be divided in to two categories – product specific and site specific. The differences seem to be related to site training, site procedures and other variables that some have called “Safety Culture.” exida defines this variable as the “Safety Maturity Index.” This webinar will provide an overview of some of the field failure studies, present a simplified model to evaluate Site Safety Index (SSI), and describe the safety impact of SSI.
Blog Entry: Train Wrecks Waiting to Happen?
Hacking public transportation systems is always depicted on TV and movies. And they make it seem so easy… it only takes seconds for these fictional experts. Is it a reality? Well, the Amtrak train derailment that occurred earlier this year in Philadelphia got me thinking about “hacking” as a possible…
News Item: NEW exida WHITEPAPER: The Key Variables Needed for PFDavg Calculation
In performance based functional safety standards, safety function designs are verified using specified metrics. A key metric for process industry designs is called average Probability of Failure on Demand (PFDavg). After several studies of many field failure and proof test reports, several variables have been identified as key to a…
White Paper: The Key Variables Needed for PFDavg Calculation
In performance based functional safety standards, safety function designs are verified using specified metrics. A key metric for process industry designs is called average Probability of Failure on Demand (PFDavg). After several studies of many field failure and proof test reports, several variables have been identified as key to a…
Blog Entry: Say What?
The “see something, say something” mantra is being used as a countermeasure for terrorism and crime, but it can also be effective to improve functional safety in development teams and plant sites. It could be useful in general process improvement as well. This can be especially evident during training sessions…
Emerson - Micro Motion 5700 Coriolis Flowmeter
IEC 61508 in the Safety Automation Equipment List
Blog Entry: How can I improve my SIL?
Click here to read the first entry in this blog series (What is SIL compliance?) Click here to read the second entry in this blog series (How is SIL Used?) As we now know, a Safety Integrity Level (SIL) can only be given to a product that meets complete compliance.…