Hazards high temperature

Heuristic 55 The tube side is for corrosive, fouling, scaling, hazardous, high-temperature, high-pressure, and more expensive fluids. The shell side is for more viscous, cleaner, lower-flow rate, evaporating, and condensing fluids. 

All electrical equipment and wiring for light and power circuits shall comply with the requirements of Subpart K of this part for use in damp, hazardous, high temperature, and compressed air environments. 

Potential fusion appHcations other than electricity production have received some study. For example, radiation and high temperature heat from a fusion reactor could be used to produce hydrogen by the electrolysis or radiolysis of water, which could be employed in the synthesis of portable chemical fuels for transportation or industrial use. The transmutation of radioactive actinide wastes from fission reactors may also be feasible. This idea would utilize the neutrons from a fusion reactor to convert hazardous isotopes into more benign and easier-to-handle species. The practicaUty of these concepts requires further analysis. 

It is a skin and severe eye irritant. It is combustible when exposed to heat or flame. As discussed above, contamination with bases should be avoided where the material is to be handled at high temperature and high concentration because of the potential decomposition hazard. 

High temperature components and exhaust maybe hazardous to maintenance personnel and birds... 

HAZARDOUS WASTE An Unofficial class of industrial wastes which have to be disposed of with particular care. In the UK the closest definition is for special wastes . Certain toxic organic wastes, such as PCBs, have to be burned in high-temperature incinerators. 

Chemical Reactivity - Reactivity with Water Dissolves with a moderate reaction Reactivity with Common Materials None Stability During Transport May become unstable and subject to explosion if stored for extended periods of time or is exposed to high temperatures and pressures Neutralizing Agerus for Acids and Caustics The weak acidity can be neutralized by slaked lime, however this does not destroy the hazardous properties of the material Polymerization Not pertinent Inhibitor of Polymerization Not pertinent. 

Chemical Reactivity - Reactivity with Water Reacts violently with water as a dry solid or when dissolved in ether. The hydrogen produced by the reaction with water is a major hazard and necessitates adequate ventilation Reactivity with Common Materials Can burn in heated or moist air Stability During Transport Normally stable imstable at high temperatures Neutralizing Agerus for Acids and Caustics Not pertinent Polymerization Not pertinent Inhibitor of Polymerization Not pertinent. 

Layout considerations include avoiding crane lifts over operating equipment, especially equipment that contains hazardous materials, and, in particular, hazardous materials held under pressure or high temperature. Allow space for maintenance access without damage to other equipment. Apply risk management concepts to the layout and siting. 

Chemical processing under "extreme conditions" of high temperatures and pressures requires more tliorough analysis and extra safeguards. As discussed in Chapter 7, e.xplosions at liigher initial temperatures and pressures are much more severe. Therefore, chemical processes under extreme conditions require specialized equipment design and fabrication. Otlier factors tlrat should be considered when evaluating a chemical process are rate and order of the reaction, stability of the reaction, and tlie healtli hazards of the raw materials used. 

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