Blog archive 2018-02-20T17:08:52+00:00

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The inevitability of functional safety embracing cybersecurity risk

Guest blog by Nigel Stanley (Chief Technology Officer - Operational Technology and Industrial Cybersecurity CoE) - TÜV Rheinland (Risktec Solutions Ltd.) Most people would agree that we are now at the start of the fourth (4.0) industrial revolution, also known as the current trend of automation and data exchange. The traditional slower pace of industry is now swept up in frenetic technology advances that are normally associated with information technology products and services. The world of functional safety has enjoyed a well-defined, deterministic way of measuring and dealing with risk. [...]

March 14th, 2018|Blog, Cyber security|

How do barriers relate to one another? Taking dependencies into account in Bowtie

Loss of containment could lead to fire. Having multiple barriers or controls between those events could give the impression that the operation is well-protected. But what if your barriers are dependent on each other? Many organizations struggle with the level of detail when defining barriers in bowtie risk modeling. For example: should barriers be fully independent and therefore be more generically defined? Or does that make the barriers less useful, because fewer details are presented and assessed? Often organizations need more than just one level of detail. It all depends [...]

March 8th, 2018|Blog, BowtieXP|

How Human Factors can be taken into account in Bowtie risk modeling

Bowtie risk assessment is broadly used in high hazard industries. The bowtie modeling has proven to be a successful method to: 1) visualize risk scenario’s and control measures, 2) facilitate structured brainstorming and 3) identify gaps in risk control, by highlighting information that is lacking or unknown. Human Factors: a greater threat than technical failures The general opinion nowadays states that Human Factors represent a greater threat to complex hazardous systems than technical failures do. This means that if Human Factors are not present in your risk modeling tool, [...]

February 21st, 2018|Blog, BowtieXP|

Barriers: how many do you really have?

The above picture shows a Boeing 787 that suffered from electrical fire in Heathrow, 2013 Guest blog by Anthony Venetz - Across Safety Development When looking at barriers in a bowtie they appear to be sequential, i.e. if one barrier fails then the next one should come into play, but is this always the case? Are barriers sometimes ‘parallel’ rather than ‘sequential’? If so, what does this mean for how you interpret the information in the BowTie and how you rate barrier effectiveness? This blog provides food for thought regarding [...]

February 15th, 2018|Blog|

Using BowTieXP to operationalize your barriers or controls

We often see that organizations can be quite adept at performing the first steps in building a better safety culture using BowTieXP software. They start with identifying and defining their barriers and they even find the employees who are accountable for the barrier. These are some great and very necessary first steps to construct a safety management system in the 'paper world'. In order to operationalize your bowtie diagram and take the first step to become in control of the 'real world', you need to know how the barriers function, [...]

February 7th, 2018|Blog, Software functionality blog|

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