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Strong Safety Culture Translates to Lower Insurance Premiums

Strong Safety Culture Translates to Lower Insurance Premiums

Insurance Companies are hedging their bets through premiums while the Manufacturing Industry is placing their wagers on luck.

The worlds of gambling and insurance are similar in many ways. Both are built upon elements of probability, modeling and quantification of risk. Professional gamblers are well informed on the odds…

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Attack on Florida Water System Highlights Weak Security Protections for Critical Infrastructure

Attack on Florida Water System Highlights Weak Security Protections for Critical Infrastructure

The Oldsmar Water Treatment Facility in Pinellas County Florida was compromised by hackers on February 5th. Hackers took advantage of the TeamViewer application that was still installed on the water facilities network to gain remote access1. The TeamViewer was originally installed to allow for status checks and troubleshooting of…

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IEC 62443 - The Evolution of IACS Cybersecurity

When we were doing safety system designs in the 1980s, there was no Windows, there was no TCP/IP, there was no in Ethernet. We had to write our own protocols to transmit data to our I/O and our controllers.

Fault-finding was always a challenge . What we ended up…

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Alarm Rationalization: An Art or a Science? – Common Rationalization Mistakes

Alarm Rationalization: An Art or a Science? – Common Rationalization Mistakes

Successful alarm rationalization combines both art and science. From the scientific point of view, rationalization follows a systematic process that applies alarm management principles to determine whether an alarm is justified (needed) and to document its basis (cause, consequence, corrective action, time to respond) and settings (priority, setpoint) in…

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Rationalize Your Alarm Management Problems Away

Rationalize Your Alarm Management Problems Away

The increasing global adoption of alarm management standards (ISA-18.2 and IEC 62682) is bringing the importance of alarm rationalization to the forefront. Rationalization is defined as the “process to review potential alarms using the principles of the alarm philosophy, to select alarms for design, and to document the rationale…

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Block that attack!  Getting IEC 62443 Cyber Certified (Part 2)

Block that attack!  Getting IEC 62443 Cyber Certified (Part 2)

This is the next in a series of blogs and papers on the benefits of cyber certification. You can read part 1 here.  Certification provides you with the opportunity to work with an experienced cyber team here at exida, and the vast knowledge of cyber experts worldwide codified in…

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Alarm Management Frequently Asked Questions (FAQs)

Alarm Management Frequently Asked Questions (FAQs)

The March / April 2020 issue of Intech contains an excellent article by Nick Sands and Donald Dunn, the co-chairs for the ISA-18 committee. 

The article reviews some of the most frequently asked questions on alarm management:

  1. What is alarm management?
  2. Which alarm management standard do…

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The Dos and Don’t of SIS Application Programming

The Dos and Don’t of SIS Application Programming

It’s interesting that the majority of the time when people talk about functional safety, they are usually thinking about hardware: what sensors to use, which logic solver, what actuator, solenoid or valve to select; what voting architecture, etc.  What often gets overlooked, initially, is the application program.

Essentially, when…

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Why should I use an Alarm Deadband?

Why should I use an Alarm Deadband?

As many of you will know, one of the most common form of nuisance to operators working industrial controls are repeating or chattering alarms. On a typical plant, repeating alarms may account for around 50% of the alarm annunciations. They are a problem because the operator will have to…

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IEC 62443 Cybersecurity Certification for Medical Devices

IEC 62443 Cybersecurity Certification for Medical Devices

Block that attack!  Getting IEC 62443 Cyber Certified (Part 1)

Block that attack!  Getting IEC 62443 Cyber Certified (Part 1)

This is the next in a series of blogs and papers on the benefits of cyber certification.  Certification provides you with the opportunity to work with an experienced cyber team here at exida, and the vast knowledge of cyber experts worldwide codified in the IEC 62443 family of…

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How the PHA and LOPA are going to affect your SIS

How the PHA and LOPA are going to affect your SIS

Both Process Safety Analysis (PHA) and Layer of Protection Analysis (LOPA) occur in the early stage of the Functional Safety Lifecycle, detailed in both IEC 61511 and IEC 61508. They both serve significant roles in the whole process safety management. Yet, as a facilitator…

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Alarm System Auditing and Enforcement – The Why and the How

Alarm System Auditing and Enforcement – The Why and the How

One of the more important tasks in the alarm management lifecycle is auditing of the alarm system configuration. Auditing preserves your investment in rationalization, checks for changes that bypassed the MOC process, and helps you to maintain the integrity of the alarm system. Oh, and it also required per…

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Share the Wealth (of Functional Safety Knowledge)

Share the Wealth (of Functional Safety Knowledge)

Experience is a good teacher.  But how do you get the experience?  

Formal classroom or online training is often available for more general skills, but on-the-job training usually provides a more in-depth path to gain such experience.  After doing a job for a while, working through difficulties with colleagues,…

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Safety Alarms and Why ISA-84.91.03 is Needed

Safety Alarms and Why ISA-84.91.03 is Needed

On July 27, the US Chemical Safety Board (CSB) issued a Factual Update on their investigation into a release of water containing a toxic gas (hydrogen sulfide) and subsequent fatal injuries sustained at the Aghorn Operating Waterflood Station.  While it is typically not a good idea to comment on investigations…

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