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Technical Presentations

Ensuring Consistency of Corporate Risk Criteria

Mar 22, 2010
J. Wayne Chastain
The recently published CCPS text Guidelines for Developing Quantitative Safety Risk Criteria makes a strong case for corporations developing risk criteria. One topic addressed in the text is the development of criteria for use in single cause – consequence risk analysis methodologies such as Layer...

Stability Analysis of Safety Valve

Mar 22, 2010
The stability for a safety valve was investigated by experiments and analysis. It was found that the dynamic instability was caused by the interaction effect between the pressure wave propagation through the inlet pipe and the valve disc motion. This dynamic instability is mitigated by the...

Risk-Based Mechanical Integrity - Beyond Fixed Equipment

Mar 22, 2010
Thomas J. Folk
This paper presents approaches to provide a safer operating plant by extending mechanical integrity to all process equipment using a risk-based approach to better focus resources. Risk-based approaches for inspection and testing of fixed equipment for mechanical integrity (API 580/581) and for the...

Modeling Small Releases from Tanks

Mar 22, 2010
Fredrick H. Knack
The methodologies in the chapter on “Dispersion Modeling” in the CCPS book Guidelines for Consequence Analysis of Chemical Releases, provide means for modeling outdoors releases at relatively long distances from a large source. At times it is necessary to model releases at relatively short...

Combustible Dust: A Practical Approach to Identifying and Mitigating Hazards

Mar 22, 2010
Richard C. Griffin
Combustible dust hazards are prevalent in many facilities throughout industry, including the chemical process industries. Lack of awareness and control of these hazards has led to numerous catastrophic accidents. Chevron Phillips Chemical Company LP has developed a practical approach to identifying...

Materials as Inherent Ignition Sources for Dust Explosions During Spray Drying

Mar 22, 2010
Vincent Van den Hoogenband
During spray drying, a solution is dispersed through a nozzle in small droplets to evaporate the water by means of hot air. In a large number of these processes, organic materials are processed so three out of four factors for dust explosions to occur are already present. The only thing missing for...

Utilizing Integrated Risk Assessment to Maximize Asset Integrity Management

Mar 22, 2010
Steve Soos
The advent of various safety standards like ANSI /ISA 84, IEC 61511, API 14C, API 580 / 581, SAE JA1011, IEC 60330 and PSM guidelines has been a good impetus in improving the availability and reliability of safety systems and processes with an objective to meet the requirements defined by OSHA, EPA...

Practical Issues with Marginally Explosible Dusts - Evaluating the Real Hazard

Mar 22, 2010
Samuel A. Rodgers
A combustible dust can be non-explosible, marginally explosible or severely explosible. With the exception of a few standards with a quantitative perspective (such as NFPA 68), most safety standards and regulations do not differentiate marginally explosible dusts from severely explosible dusts. As...

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