Document jyO5n66k61zoZvKNZYo6YY5ZQ

\ Y--J (TTI Digest of Industrial Hygiene - 14. 464 Guarding Hjtroua Pisaas. Anonymous. Safety Bug** 81, 47-8 (1940). Bn an English Accident Pretention Bulletin. The oxides of nitrogen are among a few gases that nay cause grave injury with! mediate Indications, and their effects nay be realized when it Is too late t save the victim. To avoid Injury It Is necessary to know where they are like! to occur, to avoid breathing them when they occur and to obtain nodical adviot at once when Hi effsots ore felt, howsvor trivial they nay soar. Hltrous gai may arise wherever strong nitric acid is used. The prefix "nitro" in the nau of a substance should be a warning that such femes may be encountered in its or manufacture. An atmosphere containing enough of the fumes to show their r color Is highly dangerous, and oven snailor concentrations, enough to cause - coughing, choking sensation or smarting of the skin are Injurious. Whatever . fumes may arise the operation should be either totally enclosed or provided wi strong exhausts, supplemented with genoral vontllatlon. Breathing apparatus < the canister type Is suitable for repair work and any other necessary exposun only when the concentration of the funea is low. Otherwise air-supplied or oxygon-generating respirators must be used. Whan molten nitrate baths are us< for heat treatment, the temperature must never exceed 8S0C. 465 Carbon Monoxide and Hydrogen Sulfide Poisoning In Industrial Processes P" toption Against Them. E. Neitzel. Z.gss.Sobless-u. Sprengstoffsw. 38, 157-9 - (1940). (German). A discussion of the opportunities which exist In many industries for the eol> al release of carbon monoxide end hydrogen sulfide In poisonous quantities. 1 symptoms of carbon monoxide poisoning and tbo mechanism of poisoning are des cribed. Methods for detecting the presence of carton monoxide la air end for post-mortem tosta for the gas are given. The three kinds of protective masks described. Including: (1) a mask with a canister containing a catalytic agan composed of a mixture of cupric oxide and manganese dioxide, which oxidizes carbon monoxide to carbon dioxide; (2) the oxygen breathing apparatus with a supply of oxygen, and (3) the hose mask to which air Is pumped through a ttiba Hydrogen sulfide Is no leas dangerous than carbon moaradda. In hignconcentx tions unconsciousness occurs practically Instantaneously. It also erases eye injuries. Instances of rapid poisoning axe cited. Sources of hydrogen aulfi in Industry and elsewhere are listed, and symptoms of poisoning ore described Suitable gas masks should be worn and stringent safety precautions should be observed. 466 Beware Ammonia Hazards. Anonymous* Power Plant Bag., 45, 69 (Hay, 1941). A brief note on the precautions to be observed In hand! Ing end using cylinder of mroonls proper manipulation of valves and tbs necessity of rcoiaj Ing with the cylinder during discharge. 467 Anhydrous Awaonla. R,J. Quinn and B.L. Carr. Water Works & Sewerage* S8, . 132-6 (March, 1941). In addition to data on the physical properties of sr^ydzous aaaonla, the aut) present information en Its physiological effects, precautions in handling sn< first eld treatment of persons overcame or injured. Tbs precautions Include ventilation by fans near the celling, use of only Iron and steel for piping, avoidance of mixing the gas with chlorine, and. care la handling. Pint aid includes raaovel to fresh air, uae of artificial respiration but not the pulM treatment of eyes with boric add, nose and throat bums with boric add and light akin bums with picric sold. More serious burns should not be treated with pioric add but should be cared for by the physician. The tannic add treatment is advocated. Henderson and Haggard's table of limiting concentre; is given* .