News & Events.
exida Announces the Launch of the SILSafe Data Web Site
October 29, 2015
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 the validity of SIL verification calculations. Unfortunately there is often conflicting or incomplete information readily available to perform this task.
THE IMPACT OF POOR INFORMATION CAN BE DANGEROUS UNDER DESIGN OR EXPENSIVE OVERDESIGN.
Determining if data is suitable for use is a critical first step. The SILSafeData.com website is a listing of upper and lower bounds for various devices commonly used in safety instrumented functions. These bounds were derived from statistical analysis of FMEDA results which represent design variations and application variations in combination with extensive comparisons with realistic field failure data. exida calls this technique “Predictive Analytics.”
The upper bound and lower bound dangerous failure rate data in SILSafe Data is presented to perform quick comparisons with any piece of data. If the dangerous failure rate provided is not within the limits, further analysis and justification is warranted before using the provided data.