Document 11pOOyj6n6z717bMeboJwee5

FILE NAME: National Safety Council (NSC) DATE: 1953 June DOC#: NSC027 DOCUMENT DESCRIPTION: NSC - National Safety News - Detecting Dust Damage to Workers' Lungs water droplets discharged through fog nozzles at pressures of 400 to 700 pounds per sruare inch. The effluent gases art sprayed with process water a id the sulfuric acid solution recovered from the spray system is recycled to the manufacturing process. This has resulted in effect ve reduction of the acid loss. Tim daily recovery from the spray tower in this plant is 4V2 to 7 tons of sulfuric acid. The spraying of the effluent gases saturates teem with water vapor so that thets is sometimes a plume of steam orer the stack. Detecting Dust Damage To Workers' Lungs Detection of Early Lung Functional Changes in Industrie 1 Exposure, by Hur ley L. Motley. The Industrial Health Conference, April 2 1953. T h e variation in individual susceptibility to dust hazards is shown by the fact that in coal mining some mer are able to work a normal life span without great injury whereas others are com pletely disabled after 15 to 20 years of exposure. Measurements of vital capacity and of maximum breathing capac ity have been studied in a large number of cases of chronic pul monary disease and correlated with other measurements of pul monary .function. The maximum breathing capacity measurement seems to be most useful for the early detection of lung changes such as the loss of elasticity re sulting from dust damage and such as obstruction from spasm of the bronchia tubes produced by inhaled irritants. Measurement of the maximum breathing capacity before and af ter a single treatment with a bronchial dilating drug has pro vided a good method for deter mining the ameunt of bronchial spasm present. The routine measurement of maximum Treat ring capacity to gether with the chest X-rays of industrial workers exposed to dust hazards would teem to be desir able in the er rly diagnosis of fibrosis (scar formation, and bronchial obstruction). It would enable the early detection of the more susceptible individuals. If the annual maximum breathing N a tio n a l Safety H e w s, June, 1953 H e r e 'S im portant news for insurance underwriters; build ing owners; safety, maintenance ?planning engineers. Nov/, with new--: i'cient "A utom atic" S P R A Y Sprinklers, it : to obtain substantially improved fire protec extra cost. Leading insurance organizations cons men LliClAA superior to conventional approved sprinklers. T hey are sug gested for use on all new construction, and can easily be inter changed with obsolete devices on old style systems without expensive piping rearrangement. 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Please sondt Condensed Catalog Driver Tralninfj Mavln Hove Reprosentalivo Coll Firm Nom e_ S l r o o f _____ :;:'j city_ _ Zon o_______ Slofe _ ....... fl capacity measurements progres^ sively decrease, lung damage lifiS indicated and the worker should .... be removed from the dust hazard Announce Noise Control Research Program Claims totaling $2 billion for deafness due to excessive indus trial noise are in the courts today according to the American Stand ards Association. Noise levels in cities and industrial areas are go ing up to a degree which may en danger the mental and physical well-being of individuals in the vicinity. Noisy machines in fac tories are c re a tin g a newly- recognized hazard--that of accit dents resulting from warnings and'lf instructions misunderstood or not!" heard. And sales resistance tdf noisy industrial equipment is dell veloping. Current pressure from legisla tive bodies of the sta te s and! industry for standard criteria tdl "assist im eniedying these condi- " tions has led to the initiation of a research program in the field of noise measurement and control by a subcommittee of the American Standards Association. -iaMf The claims for com pensate; for loss of hearing due to indusr; trial noise cannot be settled with3|| out adequate bases for determina-^jj tion. of causes. Industrial- noistjl limits cannot be set without a suffi| cient body of bio- and psycho^ acoustic data. Noise abatementprograms are ineffectual withoutfi sufficient scientific information re | garding cause and effect. These data are not yet available. Objective of the new research'll pro g ram will be' to e x p lo re ^ whether criteria for noise control! can be established in the light of| p resen tly a v ailab le bio- and"- psycho-acoustic data, and to pub- . lish the findings. The committee1 will study the reliability and sta-i| tistical significance of various sets-Jg of industrial data and data exist-; ing in governmental and univer sity laboratories. It will review^ the methods by which they haver been obtained and try to recom-;| mend noise limits for specific lo-jj cations and conditions. Walter A. Rosenblith, associate:.^ professor of communications bio-a physics of the Massachusetts In-; National Safety N ew s, June,