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August 20, 2019

aeSolutions and SANS Institute Partner to Create Industry-Leading ICS Cybersecurity Training Course Tailored to the Needs of Industrial Company Managers

aeSolutions and SANS Institute Partner to Create Industry-Leading ICS Cybersecurity Training Course Tailored to the Needs of Industrial Company Managers Contact: Becky Kramer, Marketing Specialist 250 Commonwealth Drive, Suite 200 Greenville, SC 29615 864-404-3074 becky.kramer@aesolns.com www.aesolns.com One-Day Course to be Offered at SANS Oil & Gas Cybersecurity Summit 2019 in Houston, Texas Greenville, South Carolina, […]

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August 13, 2019

Best practices for gas detection system design

Warren Johnson, senior project manager for consulting, engineering and integration firm aeSolutions, was featured in CONTROL magazine discussing his presentation covering the essential aspects of gas detection system design at the 2019 Siemens Automation Summit. [In the United States, it’s the role of the Occupational Safety and Health Administration (OSHA) to set limits on employee […]

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July 25, 2019

E&E News : Battle lines form over pipeline cyberthreat

Marco Ayala of aeSolutions, was featured today in an E&E News article about possible cyberattacks on U.S. oil and gas pipelines.  The following is a short excerpt : “It’s a political football,” said Marco Ayala, senior life-cycle solutions manager at aeSolutions in Houston, who often works with pipeline companies on their cybersecurity practices. “DOE’s point […]

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May 28, 2019

Thank you ! – Making It Real

Thank you to all who attended our Industrial Process Integrity Seminar, Making It Real. And thanks to the partners and vendors that helped make it such a success. Check out our Events page to see your next opportunity to meet one of our experts in person. https://www.aesolns.com/news-resources/events/

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April 17, 2019

Updated 5/20: aeSolutions is excited to be hosting ISA Houston Section’s May Cyber Camp

We were thrilled with the overwhelmingly enthusiastic response we had for these aeSolutions hosted classes which were taught by 3 different instructors. The original post with event details is archived below. “Thanks to the students whose active participation in the class made it successful!  I thoroughly enjoyed teaching the class and was pleasantly surprised how […]

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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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