exida explains Blog

10 Years After, Has Anything Been Learned from Deepwater Horizon?

It’s hard to believe that it’s been 10 years since the Deepwater Horizon incident on April 20th 2010. Even today, the Gulf Coast is still feeling the effects. In its latest estimates, BP is looking at a total loss of $65Bn USD, in settlements, fines and compensation. This latest estimate was published in the Maritime...

exida Launches Self-Paced IEC 62443 Cybersecurity Software Development Online Training Course

The global leader in industrial cybersecurity services for the process industries, exida, has launched the self-paced training course CS 201 - IEC 62443 Cybersecurity Software Development. This IEC 62443 Security Software Development training course and workshop was created specifically for developers of industrial control system products with a particular focus on network-enabled embedded control system...

exida Introduces New IEC 62443 Cyber Templates

exida is excited to introduce a new set of templates for common security documents that are normally created during product development. These templates are designed to reduced the time of upgrading development processes to be IEC 62443-4-1 compliant. The following templates are included:   Configuration Management Plan Security Requirements Specification Security Test Plan Security User ManualThreat...

Which Measure (Rationalized or Annunciated) is More Important?

Get your priorities (distribution) straight A very common question is posed during alarm management training. Does the recommended alarm priority distribution of ~5% / ~15% / ~80% for high / medium / low priority alarms apply to the rationalized alarm priority distribution (as configured in the control system) or to the annunciatedalarm priority distribution (those...

exida Launches Self-Paced Introductory IEC 61508 Online Course for Software Developers

The global leader in functional safety certification services for the process industries, exida, has launched the self-paced training course FSE 212 - IEC 61508 - An Introduction to Functional Safety for Software Developers. The IEC 61508 standard for functional safety of electrical / electronic and programmable electronic systems, explains the concepts of safety integrity levels,...

Back to Basics: Failure Rates – λD

The Greek symbol  λD represents dangerous failure rates in functional safety, usually expressed in the unit of measurement of FITs, and can be determined through FMEDAs. (FITs (λ) are failures per billion hours, expressed by 10-9 hours). λD is the number of dangerous failures per unit time for a piece of equipment. This would be a time when the failure would...

The Benefits of exida’s Site Safety Index (SSI)

New reports out now are claiming that an aging, failed elbow pipe appears to be the initial cause of a June 21 fire and subsequent explosions that injured five people at the largest oil refinery on the East Coast, federal investigators said. The U.S. Chemical Safety and Hazard Investigation Board released a preliminary factual findings...

Back to Basics 17 – PFH (Probability of Failure on Demand per Hour)

PFH (The Probability of Failure on Demand per Hour)  is the probability that a system will fail dangerously, and not be able to perform its safety function when required. PFH can be determined as a probability or maximum probability over a time period of an hour. IEC 61508 and IEC 61511 use PFH as the system metric upon which...

Evaluating Alarm System Performance in a Multi-Operator Control Room

Situation: There are three operator consoles (positions) in the same control room. There is one general alarm horn that goes off whenever a new alarm comes in from any one of the three consoles. The horn draws the attention of each of the three operators. Question: How are the ISA-18.2 KPIs for alarm system performance applied when...

exida User Conference 2018

Join us in this conference to stay updated on the new release of exida's powerful tool - exSILentia version 4 and use this opportunity to meet and engage in fruitful discussions with our exida team of experts! Conference dates: 14-15 November 2018 Pre-Conference courses dates: 12-13 November 2018 Location: Resorts World Sentosa, Singapore More information...
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