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A Robust Sensor Fault Diagnosis System Using Neural Networks and a Dynamic Process Model
(Mary Kay O'Connor Process Safety Center, 2001)
Back propagation (BP) neural networks are applied for reactor fault diagnosis. Analyzed is the output prediction error between a neural network model and an independent dynamic process model, which serves as a residual for ...
Effect of Air in the Thermal Decomposition of 50 wt.% Hydroxylamine/water
(Mary Kay O'Connor Process Safety Center, 2001)
This paper presents experimental measurements of the thermal decomposition reaction of 50 wt% hydroxylamine/water (HA) in an oxygen-free environment using an APTAC calorimeter. Overall kinetics, onset temperatures, heats ...
Spontaneous Combustible Substances: a Database Update
(Mary Kay O'Connor Process Safety Center, 1999)
A database of spontaneous combustible substances is under development. Over 100 substances commonly found in the chemical processing industry have been included to date. Spontaneous combustion includes the several related ...
Using Screening Test Data to Classify Reactive Chemicals Hazards
(Mary Kay O'Connor Process Safety Center, 2002)
The evaluation of reactive hazards is necessary for the safe working of the chemical process industries. An integral aspect of reactive hazard testing is the screening of chemicals to focus experimental efforts on the more ...
Prevention and Suppression of Metal Packing Fires
(Mary Kay O'Connor Process Safety Center, 2002)
Structured packing has been widely used because of large surface area that makes possible columns with high capacity and efficiency. The large surface area also contributes to fire hazards because of hydrocarbon deposits ...
Goal Setting: A Systematic Approach to Chemical Safety Improvements
(Mary Kay O'Connor Process Safety Center, 2000)
This paper explores a novel approach for improving chemical safety in the United States by establishing National Process Safety Goals. Process safety initiatives in the recent years have given rise to significant increases ...
Computer-aided Fault Tree Synthesis for Quantitative Risk Assessments
(Mary Kay O'Connor Process Safety Center, 2001)
Fault tree analysis (FTA) has been used in the chemical process industry (CPI) for systematic safety and reliability analysis during the past decades. Once constructed, the fault tree can be of considerable value in ...