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January 18, 2019

ISA welcomes aeSolutions’ Paul Gruhn as its 2019 Society President

The International Society of Automation (ISA) announced that Paul Gruhn, PE, CFSE, and ISA Life Fellow, is its 2019 Society President. In his role as Society President, Gruhn will lead the ISA Board of Directors, which is responsible for governing, setting policy and establishing the strategic direction of the organization. ISA is a nonprofit professional […]

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December 26, 2018

Texas A&M University – 74th Annual Instrumentation and Automation Symposium 

Many aeSolutions’ team members will again be presenting at the 2019 Instrumentation and Automation Symposium.  At the symposium, practical technical papers as well as vendor exhibits are presented with a focus on education. aeSolutions SPEAKERS Dave Grattan & Keith Brumbaugh, Human Factors, Tue. Jan 22nd, 10:00am John Cusimano, Greenfield Cybersecurity, Tue. Jan 22nd, 11:00am Paul Gruhn, SIS Roundtable Workshop 2, […]

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December 17, 2018

Happy Holidays from aeSolutions

Christmas is a time of year that we reflect back on how much each of us personally value the relationships we have with our clients. We hope that together we have achieved project objectives in 2018 that make a difference in the lives of your employees and ours well into the future.   Very best wishes […]

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November 15, 2018

Using the cloud to secure the cloud – Control Magazine

Excerpts from Control Magazine: “This is a very simple setup. You don’t need to be an IT or cybersecurty expert to use these tools,” said Peter Eliya, safety and control systems automation specialist at aeSolutions. “Remote access enables technical support and increased worker productivity to counter the exponential growth of automation, but it comes with […]

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October 18, 2018

aeSolutions’ Mike Scott featured in Control Magazine

Mike Scott, co-founder and executive vice president of global process safety technology at aeSolutions was recently featured in the cover story on Process Safety. “In order to make a step change in process safety performance, a paradigm shift in how we make risk-based financial decisions and ultimately how we operate facilities is mandatory because what […]

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White Papers by aeSolutions :

Risk Criteria Selection and the Impacts on LOPA Results: To Sum or Not to Sum, That is the Question

In the CCPS book Layer of Protection Analysis – Simplified Process Risk Assessment, Layers of Protection Analysis (LOPA) is initially described as the analysis of a single cause-consequence pairing. However, later in the book, there is the discussion of summing risk for multiple scenarios. In practice, several companies prefer to sum the frequencies of multiple causes leading to a single consequence when conducting LOPA. Summing the causes can be a useful tool in that it will ensure proper integrity of a safety function to address all of the causes for a single consequence and assist in the reduction of the numbers of Independent Protection Layers (IPLs) necessary at a facility. However, caution must be taken in using this method, as there may be unrealized effects on LOPA results, and therefore unintended impacts to the entire safety lifecycle. In contrast, evaluating only a single cause-consequence pair also poses different concerns when relating the results to selected risk criteria.

This paper seeks to provide insight into the effects of each choice, including the pros and cons of each method. Deeper examinations into the definitions of risk criteria and consequence are explored.

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