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Blog Entry: The value of RPN Numbers in a DFMEA
I learned about the Failure Modes and Effects Analysis (FMEA) process for designs some decades ago. I was Supervisor of an Embedded System development group. There seemed to be a lot of evidence that an FMEA on a design was a really good way to identify issues (problems) early in…
White Paper: The Essential DFMEA Process – Maximum Value / Optimal Cost
A variation of the DFMEA method has evolved from the application of Functional Safety requirements to the DFMEA process. exida calls this method DDMA – Design Deviation and Mitigation Analysis. DDMA maintains the essential objective of DFMEA to identify potential design issues early in the development and make design changes…
Blog Entry: Environmental Impact on Failure Rates
Good component failure rate data is a cornerstone of good quality reliability metric analysis. As mentioned in a previous exida whitepaper , one of the shortcomings of reliability databases has been the inability to handle variations in the operating environment. A sensor monitoring a flame and the processor interpreting the…
Cisco - IE9300 Rugged Series
IEC 62443, ISASecure in the Security Automation Equipment List
China Automotive Innovation Corporation - CAIC CP AUTOSAR OS
ISO 26262 in the Safety Automation Equipment List
Trillium Valves - Atwood & Morill Free Flow
IEC 61508 in the Safety Automation Equipment List
White Paper: Environmental Impact on Failure Rates
This paper describes the impact that different environmental factors can have on failure rates. To incorporate these impacts, exida provides a tool that can generate a custom Environmental Profile to be used in a Failure Modes, Effects, and Diagnostics Analysis (FMEDA). exida’s Component Reliability Database is embedded in the OEMx…
Westermo Ireland - Secure Development Process
ISASecure in the Security Automation Equipment List
Blog Entry: Why is Memory Management important for Functional Safety?
What is Memory Mapping? Memory mapping is a technique used in computer systems to manage memory resources safely, it involves creating a virtual address space that corresponds directly to the physical memory or to a portion of it, this allows programs to access memory in a way that is safe…
Schneider Electric - EcoStruxure Power & Process Control System
ISASecure in the Security Automation Equipment List
Honeywell Connected Enterprise - Honeywell Connected Enterprise Security Software Development Lifecycle
ISASecure in the Security Automation Equipment List
White Paper: Get Your FMEDA Done Faster – Use Functional Effects
The goal of performing a failure modes, effects, and diagnostics analysis (FMEDA) is to obtain important reliability and Safety metrics including: the failure rates per failure mode, automatic diagnostic effectiveness, useful life, and latent fault test (proof test) effectiveness of a device. This information is used for many reasons including…
Panametrics LLC - XMT1000 Ultrasonic Liquid
in the Safety Automation Equipment List
Emerson Automation Solutions - DeltaV System Design, Implementation and Maintenance Process
IEC 62443 in the Security Automation Equipment List
Magnetrol International - Jupiter JM4 Magnetostrictive Level
IEC 61508 in the Safety Automation Equipment List
Nuclei System Technology - NA300 Processor
ISO 26262 in the Safety Automation Equipment List
Inductive Automation - Secure Software Development Lifecycle
ISASecure in the Security Automation Equipment List
Compressor Controls Corporation - Prodigy Controller
ISASecure in the Security Automation Equipment List
Blog Entry: Why do we do probabilistic models to predict risk reduction? Check the box only?
I had an engineer from a European Certification Body ask me why exida would bother paying any attention to these failure rate numbers, especially on mechanical devices? He said that he does not know anyone who actually uses them! To answer why exida pays attention to failure rates, we must…
White Paper: Application Variables of Remote Actuated Valves
Remote actuated valve assemblies (RAVA) are a frequently used final element of safety instrumented functions (SIF) in the process industry. Studies of field failure data at exida has shown potentially dangerous failures of these valve assemblies significantly depend on how they are used – the application. As a simple example,…