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White Paper: Explaining the Differences in Mechanical Failure Rates: exida FMEDA Predictions & OREDA Estimations
This white paper describes the distinction between failure rate prediction and estimation methods in general and then gives an overview of the procedures used to obtain dangerous failure rates for certain mechanical equipment using exida FMEDA predictions and OREDA estimations. exida frequently compares field failure rate data from various sources…
Blog Entry: What’s Your Biggest Fear?
Plane crash? Earthquake? Ebola outbreak? Shark attack? There are probably lots more things to add to that list. What could we do to prevent them? Not too much for some… a little more for others. But would those mitigations be practical? What tolerable risk can we accept for these fears…
News Item: EXIDA ANNOUNCES BUSINESS PARTNERSHIP WITH INDUSTRIAL PRODUCTS CORPORATION
exida, a global supplier of functional safety products, services and certifications is pleased to announce a business partnership with Industrial Products Corporation. “IPC has teamed up with exida to provide a full service solution for all aspects of Functional Safety, Cybersecurity, and Alarm Management in the Industrial environment,” says David…
Recorded Webinars: Getting to Know the Safety Equipment Reliability Handbook (SERH): 4th Edition
exida is pleased to announce the latest release of their failure data book Safety Equipment Reliability Handbook (SERH): 4th Edition. The book set is a hard copy of exida’s SERH database that contains a vast amount of equipment item reliability data. It also provides a collection of failure rate data that is applicable for use in Safety Instrumented System (SIS) conceptual design verification in the process industry, and remains the ultimate reference source for any safety engineer involved in Conceptual Design and Safety Integrity Level (SIL) verification.
This webinar will discuss:
What is the SERH?
Who can the SERH help?
Key features and benefits
What does the SERH encompass?
What is new in this edition?
What is still to come
Yokogawa Electric Corporation - TDLS 8000 Tunable Diode Laser Spectrometer
IEC 61508 in the Safety Automation Equipment List
News Item: exida Presenting and Exhibiting at 2015 Emerson Global User Exchange
exida will be presenting and exhibiting at the 2015 Emerson Global User Exchange to be held October 12-16, 2015 in Denver, CO. Stop by Booth #306 during exhibit hours. Also, Dr. William Goble, exida Principal Partner and Todd Stauffer, exida Director of Alarm Management are among the presenters at this…
News Item: EXIDA ANNOUNCES BUSINESS PARTNERSHIP WITH AVANCEON
exida, a global supplier of functional safety products, services and certifications is pleased to announce a business partnership with Avanceon. “exida provides Avanceon with a breadth of offerings that allow a complete and holistic answer to the needs of the automated manufacturer,” says Matt Ruth, Avanceon Vice President. “Avanceon takes…
Blog Entry: To Spreadsheet…or NOT to Spreadsheet
I remember the first time I ever saw a spreadsheet program. It was called “VisiCalc” and ran on a Commodore PET computer. My first thought was, “What is that good for?” Then I tried it and was totally hooked. I conclude that the creation of the spreadsheet has changed engineering…
Blog Entry: What is Systematic vs. Random Capability?
There seems to be a bunch of confusion surrounding systematic capability and random capability. I will try to clear up the confusion by explaining what is all considered and what the IEC standard says about both. Systematic Capability Development process/quality system requirements depend on certification SIL level, higher SIL level…
Honeywell International Inc. - SmartLine STT750 Temperature Transmitter with HART®
IEC 61508 in the Safety Automation Equipment List
Blog Entry: The Architectural Constraint Blind Side
I did my homework, purchased certified devices, and specified physical redundancy. I expected an uneventful SIL Verification but the assessor is telling me that I have functions failing Architectural Constraints in the sensor and final element groups. How can that be? Low demand mode Safety Instrumented Function (SIF) design is…
News Item: exida Academy: Upcoming Training Opportunities
exida is ramping up for some fall courses! Below is a list of public courses, cities, and dates! IEC 61511: Functional Safety Analysis, Design, and Operation This course delivers a complete overview of the functional safety lifecycle. It reviews Process Hazard Analysis (PHA), Consequence Analysis, Layer of Protection Analysis (LOPA),…
Blog Entry: Failure Rate Data: Are You Being Outsold?
When speaking with several manufacturers’ sales teams recently, it became very evident that some of these sales people, selling into the Industrial Safety and Controls markets, had little or no knowledge of how their products’ failure rate data compared to their competitors and/or another industry benchmark (such as DOW or…
Blog Entry: How Cybersecurity is like a Goldfish
Oh look! Squirrel! I am not much of a blogger. I should be but I’m not. This is strange, because I always have plenty to say. This subject just gets me going so I am writing about it. I welcome feedback and opinions. I have been in cybersecurity in one…
Blog Entry: Certification and the Environmental Test
Functional Safety Assessments (FSA) focus on the relevant functional safety standards that are to be applied to a product in the appropriate industry. These are standards such as IEC 61511 in the process automation industry, or ISO 26262 in the automotive industry. And IEC 61508 is like an umbrella safety…
Recorded Webinars: Mechanical Failure Rates: Explaining the Differences
This webinar first describes the distinction between failure rate prediction and estimation methods in general. We will then discuss 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.
Danfoss Power Solutions (US) Company - PLUS+1® Safety Controller Family with Modular Safety Kernel for PLUS+1® C-Open
IEC 61508 in the Safety Automation Equipment List
White Paper: Safety Accuracy Is Dead; Long Live Safety Deviation!
Safety deviation is a term used in functional safety. Safety deviation (formerly safety accuracy) is the change in output due to (internal) component failures not analyzed in a Failure Modes, Effects, & Diagnostic Analysis (FMEDA). Safety accuracy is an input to the FMEDA analyst to advise the level of analysis…
Blog Entry: The True Meaning Behind Those Fancy Letters on a Signature
Let me ask you a few questions: Does adding letters after a person’s name make them more important? What did that person go through to achieve those letters? If someone has XYZ after their name and another person also has XYZ after their name, are they equal? Did one of…
Glossary Term: Safety deviation
Safety deviation (formerly safety accuracy) is the change in output due to (internal) component failures not analyzed in a Failure Modes, Effects, & Diagnostic Analysis (FMEDA). Safety accuracy is an input to the FMEDA analyst to advise the level of analysis detail for critical analog components.