Technical Presentations

Critical P & ID Reviews Using HAZOP/LOPA Methodology Overkill or Underrated?

May 1, 2013
John T. Perez
Critical P&ID Reviews Using HAZOP/LOPA Methodology ? Overkill or Underrated? Mr. John T. Perez, P.E. Mr. Andrew Madewell Cognascents Consulting Group, Inc. 11777-A Katy Fwy Ste 438 Houston, TX 77079 john.perez@cognascents.com Keywords: Process Safety Management (PSM), HAZOP, LOPA, Process and...

Preventing Process Safety Problems of Tomorrow, Today!

May 1, 2013
Kevin Watson, Robert Dayton
The most cost effective time for implementing process safety design elements is during the planning stages of the project management process. Gap: Facilities are designed with less than adequate process safety considerations and the gap is discovered after the facilities are constructed. Addressing...

Comprehensive Machine Monitoring Strategy At Green Ethylene Plant

Apr 29, 2013
Eder Felipetto, Michael Hastings, Otvio Vescovi
Abstract This paper presents an overview of the overall monitoring strategy of a green ethylene plant (ethylene produced by catalytic dehydration of ethanol), and gives an insight into some of the challenges of monitoring the machines, as opposed to that which is required for a traditional steam...

Designing LNG Vapor Dispersion Exclusion Zones to Protect the Public

Apr 5, 2012
Jerry Havens
The LNG industry, if not the entire energy industry, may be at a crossroad. Expectation of large shale gas supplies in the United States, with a backdrop of international economies in precarious states, makes more uncertain the promise of major investments in LNG import facilities. Already, a...

NOx Risk Mitigation for the Co-Feeding of Natural Gas to the Sasol CTL Complex

Apr 4, 2012
Michael Schnobel
Natural gas has been a co-feedstock to the reformers in the Sasol CTL complex since 2004. A more beneficial way is to re-route natural gas to the cryogenic separation unit and thus only reform the separated methane in the natural gas feed. However, introducing NO x into the cryogenic separation...

More LOPA Misapplied: Common Errors and How to Avoid Them

Apr 4, 2012
Karen Study
Layer of Protection Analysis (LOPA) continues to be more and more widely utilized in the Petrochemical and other industries. LOPA is a “simplified” tool, which is true relative to tools such as Quantitative Risk Assessment and Fault Tree Analysis. However, simplified does not mean simple on an...

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