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…
Three things must be checked when verifying that a given Safety Instrumented Function (SIF) design meets a Safety Integrity Level (SIL). These are:
· Systematic Capability or Prior Use Justification for each device meets the SIL level of the SIF
· Architecture Constraints (minimum redundancy requirements) are met
· A PFDavg calculation result is within the range of numbers given for the SIL level
A PFDavg calculation is the most common and perhaps the most important of the three performance metrics. A proper PFDavg calculation should be done based on a number of variables.
This web seminar will describe how all of these variables impact the PFDavg calculation and show the importance of each variable. The overall impact will be shown to be up to two SIL levels!
The Certified Functional Safety Expert (CFSE) Program has introduced a new Automotive Safety Applications specialty. The Automotive Safety Applications program applies to personnel who implement safety related systems in automotive applications. This specialty also focuses on the understanding and proper application of the ISO 26262 standard, as well as relevant…
exida, a global supplier of functional safety products, services, and certifications has released the second version of its SILStat™ software. SILStat helps evaluate actual risk reduction by collecting and analyzing operation and maintenance data. “SILStat v2 improves the scalability of the software rollout through a standalone (Lite) and Server based…
We are pleased to announce the products chosen as recipients of the 2014 exida Safety Awards. exida recognizes the importance of excellence in functional safety, and through extensive analysis of the nominated products, we are confident that the chosen products best exemplify innovation and novelty. About the Products: Sensor Category…
IEC 61508 in the Safety Automation Equipment List
IEC 61508 in the Safety Automation Equipment List
In honor of the upcoming “Talk Like a Pirate” Day on September 19, I offer this lighthearted look at PIU assessment. Captain (C) “Ahoy me bucko! We be attemptin’ to get our transmitter design certified. It’s been shippin’ fer a few years now. We don’t got a lot of whatcha…
exida, the global leader in functional safety certification for the process industries, has certified the Rosemount Tank Gauging System from Emerson for functional safety, ensuring that it meets the functional safety requirements for Safety Integrity Level (SIL) 3 capability per IEC 61508: 2010. “Emerson has clearly demonstrated a very high…
The Failure Modes, Effects and Diagnostic Analysis (FMEDA) methodology was created in the late 1980s by engineers at exida in response to the need to obtain precise numbers for diagnostic coverage factors in programmable electronic systems. exida has continued to develop the method over the last 25 years into a technique that can predict failure rates, failure modes, and useful life for devices that contain electronic and/or mechanical components. The accuracy of the FMEDA prediction depends on the component database used in the FMEDA. The exida Electrical & Mechanical Component Reliability Handbook was developed using over 100 billion unit hours of field failure data from several different environments. This webinar will describe in some detail the FMEDA process and the field data comparison process.
IEC 61508 in the Safety Automation Equipment List