Safety and loss prevention concerns for engineers in polymer facilities

Safety related problems encountered in the production and handling of materials using monomers in water based polymerization reactions are covered. It must be noted that the author's experience is specifically in acrylic monomers.     

Babies for Sale: Market Ethics and the New Reproductive Technologies

This paper proposes the presence of a sacred/profane continuum along which marketing exchanges may be made. The functioning of this continuum is illustrated through the examination of novel reproductive markets, e.g. surrogate mothers, in vitro fertilization, that “mix” aspects of sacred and profane exchange, resulting in anxiety and confusion for market participants and society as a whole. Some ethical guidelines for governing such mixed markets are suggested.     

Semi-quantitative risk assessment method for product management

The workshop presented a semi-quantitative risk assessment technique that can be used to judge the total risk on all undesired consequences/events for a product manufacturing operation. The technique requires an experienced team to judge risk utilizing a numerical rating system that, although arbitrarily chosen, is self consistent and provides a relative assessment of product manufacturing risk. Once calculated, the risk is compared to the product's net income for making risk management and product planning decisions. The workshop included an exercise where all participants could try the technique.     

Consumer Decision-Making Styles as a Function of Individual Learning Styles

The interrelations between individuals' learning styles and their consumer decision-making styles are explored. A Secondary Learning Styles Inventory is developed to measure six characteristics of learning, and a Consumer Styles Inventory is developed to measure eight characteristics of consumer decision making. Significant correlations between 21 of the 48 pairs of learning and consumer decision-making characteristics are found. Implications for the dissemination of consumer education and information are suggested.     

Laboratory and large-scale dust explosion research

This paper describes dust explosibility research in full-scale experimental mines and a 20-L laboratory chamber at the U.S. Bureau of Mines and in a 1-m³ laboratory chamber at Fike Corporation. The purpose of this research is to improve safety in mining and other industries that manufacture, process, or use combustible dusts. As part of this work, carbonaceous dusts with a wide range of volatilities and various particle size distributions were studied. Laboratory data on the minimum explosible concentrations of predispersed dusts were comparable to mine data for nominal dust loadings that were dispersed by the aerodynamic disturbance from a gas ignition zone. Recommendations are given on the limitations of small-scale testing such as “overdriving” by too strong of an ignitor. The effect of dust particle size on explosibility data is illustrated for coal and aluminum dusts. For both dusts, the finest sizes were the most hazardous. The inerting requirements for preventing explosions were also measured in both laboratory and large-scale systems. All the data show relatively good agreement between the laboratory and the large-scale tests.     

Electrostatic hazards of pneumatic conveying of powders

The potential for dust explosion from electrostatic discharge in pneumatic Conveying systems has been reviewed. The importance of lab testing to determine electrostatic charging of powders in contact with materials of construction is illustrated. Correlation of predicted voltage fields (from lab testing) to full scale is good. With the voltage field information, ESD potential at various parts of the pneumatic conveying system can be determined (primarily in receivers, silo and separator).