Leaks nitrogen dioxide

In the event of a release of nitrogen dioxide, use appropriate protective equipment and clothing. Positive pressure air-supplied respiratory protection may be required in cases involving a large release of nitrogen dioxide gas. If a cylinder is the source of the leak and the leak cannot be stopped, remove the leaking cylinder to a fume hood or a safe place, if possible, in the open air, and repair the leak or allow the cylinder to empty. 

Nitrate, with nitrogen in the +5 oxidation state, get reduced to nitrogen dioxide where nitrogen is in the +4 oxidation state. The solution becomes blue due to the Cu + ion and a toxic red gas, NO2, is generated. Vapors from leaking bottles of oxidizing agents can similarly destroy metal shelves. For this reason many stockrooms use wood shelves to store corrosive chemicals. 

Equipment parts, such as valve stems, which are partly in contact with the atmosphere, should be stainless steel with sufficient chromium content to resist corrosion caused by leaks through stuffing boxes. Good quality ceramic bodies and Pyrex are satisfactory for handling wet or dry nitrogen dioxide. 

Should it become necessary to dispose of nitrogen dioxide from a leaking cylinder, the following procedure may be used. Move the cylinder to a hood or safe out-of-doors area. 

The increasing number of atomic reactors used for power generation has been questioned from several environmental points of view. A modern atomic plant, as shown in Fig. 28-3, appears to be relatively pollution free compared to the more familiar fossil fuel-fired plant, which emits carbon monoxide and carbon dioxide, oxides of nitrogen and sulfur, hydrocarbons, and fly ash. However, waste and spent-fuel disposal problems may offset the apparent advantages. These problems (along with steam generator leaks) caused the plant shown in Fig. 28-3 to close permanently in 199T. 

Determination of sulfur dioxide removal efficiency and particulate, sulfur dioxide, and nitrogen oxides emission rates Determination of nitrogen oxides, sulfur dioxide, and diluent emissions from stationary gas turbines Determination of volatile organic compound leaks... 

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