2012

Using LOPA to Establish SILs for Power Outage Protection

Apr 4, 2012
Carlos A. Barrera
Catastrophic incident root causes often may be correlated with power outages. An unanticipated power outage may be an initiating event that leads to a process upset or even an emergency shutdown of a process unit. If the planning and implementation of the emergency shutdown are managed incorrectly...

Emergency Block Valves

Apr 4, 2012
Joe Viviano
An Emergency Block Valves (EBV) is used as a means of isolating flammable or toxic substances in the event of a leak or fire. The installation, and use, of EBV's in many hydrocarbon services will significantly reduce the potential of fire and explosion damages caused by loss of hydrocarbon...

Turnaround Excellence - Key Success Factors

Apr 4, 2012
Bobby Vichich
Turnaround Excellence is more than a state of being… it is a journey. Achieving and sustaining excellence is wholly dependent on a site approach of shared accountability towards Turnaround Excellence and must be a continually improving process. Starting well in advance of “feed out”, a long range...

Panel Discussion on Turnaround Excellence

Apr 4, 2012
Bobby Vichich
A panel of industry experts will discuss topics of interest to Ethylene Producers with respect to turnaround excellence. Topics will be solicited from session attendees during the paper portion of the session. Prepared discussion topics will include: How are late scope changes handled, Is there...

Dynamic Simulation: Value During LNG Process Design and Beyond

Apr 4, 2012
Kenneth V. Allsford
A contributor to complex/large project management difficulty is uncertainty gaps – gaps between the information required and that readily available within the project organization. Moreover, for large projects, information is generally spread among many professional personnel across multiple...

Acetylene Converter Safety Systems

Apr 4, 2012
Nelson Shen
Acetylene is produced as a by-product during the pyrolysis cracking of hydrocarbons in ethylene plant furnaces. Typically the acceptable acetylene contaminant level in the polymer grade ethylene product is in the range of 1 ppmv or lower. Since acetylene will fractionate with ethylene, it needs to...

Design Challenges in Tankage Modernization

Apr 4, 2012
James Kong
In order to comply with regulation requirements, a refinery needs to perform major revamps to produce different grades of Diesel, namely ULSD, Off-road Grade and Regular Diesel. The existing tankage allocation needs to be changed to accommodate the hydrotreater feed components and the new products...

Analysis of Turnarounds in Olefin Plants: A 16-Year View

Apr 4, 2012
Claire Cagnolatti
Comparative Performance Analysis™ (CPA™) benchmarking studies of the olefin industry have been conducted by HSB Solomon Associates LLC (Solomon) since 1987. This paper will highlight the results of a 16-year analysis of trends in turnaround performance by the industry. Data will be analyzed and...

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...

The Rayleigh Equation Revisited What to Do When Alpha Isn't Constant

Apr 4, 2012
Robert G. Kunz
Abstract Integration of the Rayleigh Equation for batch distillation in closed analytical form has heretofore required that relative volatility (α) be assumed constant. A new technique presented in this paper produces a continuous analytical function for the Rayleigh Equation integral whether α is...

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