Safety breathing losses

Inert gas is used to blanket certain fixed-roof tanks for safety. Here is how to determine the inert gas requirements. Inert gas is lost in two ways breathing losses from day/night temperature differential, and working losses to displace changes in active level. 

Reduce losses from fugitive emissions and tank breathing as discussed under safety in Chap. 9. 

SAFETY PROFILE Elemental tellurium has relatively low toxicity. It is converted in the body to dimethyl teUuride, which imparts a garUc-Uke odor to the breath and sweat. Heavy exposures may, in addition, result in headache, drowsiness, metaUic taste, loss of appetite, nausea, tremors, convulsions, and respiratory arrest. Various teUurium salts... 

The safety limit between selenium, as an important micronutrient in human diet, and the appearance of toxic symptoms is quite small. The main symptoms from the uptake of an increased selenium quantity are dermatitis, vertigo, fragile nails, gastric disorders, hair loss, and garlic odor during breathing. 

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