Tank masks

Other mask work included the first tank mask, the M14, standardized in 1954 as part of the M8 3-Man Tank Collective Protector. In 1959, the corps standardized an improved head-wound mask, designated the M18, that allowed soldiers with head wounds to wear protective masks in contaminated environments.3... 

Eor toxic materials, it usually is advisable to provide ventilated sampling hoods or breathing-air stations and masks, to assure that the sampler is adequately protected from toxic or flammable vapors and dusts. Special provision for access to and exit from sampling points also may be needed at elevated locations and to avoid tripping or bumping ha2ards and to ensure that the sampler does not transverse areas not intended as walkways, eg, tank covers or roofs. 

Entry into a tank that has contained any chlorinated or any easily evaporated solvent requires special procedures to ensure worker safety. The heavier vapors tend to concentrate in unventilated spaces. The proper tank entry procedure requires positive ventilation, testing for residue solvent vapor and oxygen levels, and the use of respiratory equipment and rescue harness. Monitoring the tank from outside is also important. The use of an appropriate gas mask is permissible in vapor concentrations of less than 2% and when there is no deficiency of atmospheric oxygen, but not for exposures exceeding one-half hour. Skin exposure to 1,1,1-trichloroethane can cause irritation, pain, bHsters, and even burning. Eye exposure may produce irritation, but should... 

I have not worn masks out in public because of the stigma. If I m at a concert or some other public event, I sit with a handkerchief or a scarf over my nose. I ll wear a mask in the car sometimes, and I have an oxygen tank in the car. 

Still-gauging methods are adequate for only the largest leaks. The accuracy of most tank-installed liquid level gauges is usually /s in. at best. A product loss reflected by a 0.062-in. level drop for a 100-ft-diameter tank translates to a 306 gal/day leak. If this Vi6-in. drop in product level is not discernible from the masking effects of fluid expansion, losses in excess of 2650 barrels annually will go undetected. At, for example, 20 per barrel, this loss amounts to over 53,000 for a single tank. Most importantly, the associated liability risks of groundwater contamination could involve much greater potential costs. 

Respiratory Effects. No studies were located regarding respiratory effects in humans after inhalation exposure to 1,3,5-TNB. One retrospective study (Okubo and Shigeta 1982) of acute occupational exposure to 1,3-DNB dust particles was located. Six workers were removing crystallized 1,3-DNB from a tank and were protected with gauze masks and rubber gloves. Exposure occurred over a period of 6 days. By the end of the exposure period, some of the workers complained of slight dyspnea upon exertion. Inhalation was considered to be a primary route of exposure because a relatively small skin area (face and neck) was exposed. Limitations of this study include lack of information on the concentration of 1,3-DNB in the air, the amount of particulate 1,3-DNB deposited on workers skin, and the exact duration of exposure. 

Sensory deprivation is a technique, the purposes and results of which I am not sure. Generally it includes earplugs, masks over the eyes, avoidance of tactile sensation or stimulation of skin, and deliberate relaxation, as well as tanks of warm water. Classical and operant conditioning can affect what one likes, dislikes, fears, enjoys, remembers or forgets. 

Wear gloves and mask during all phases of manufacturing and filling. Do not keep the lid of the manufacturing or storage tank open unless necessary, as iodine may be liberated. 

Sampling is usually done by two persons, each equipped with a full-face mask and heavy rubber gloves. Connect to the unloading valve in the dome of the tank a stainless-steel sampling line with a 1-inch union and a 4-inch valve, and attach to the sampling line by a... 

Certain workers such as applicators and those preparing tank mixes should wear appropriate protection clothing, gloves, face masks, and so forth. The development of closed systems for mixing pesticides should help protect mixers and loaders of pesticides from exposure. 

MCS patients use this type of tube to connect the oxygen tank (see entry 252) to the mask (see entry 171). This tube is available from the American Environmental Health Foundation, founded by Dr. Rea. For more information, see www.aehf.com/catalog/product info. php products id=9l6. 

Liquid dosage forms. The liquid products are prepared by dissolving the ingredients in the appropriate solvent systems. Dyes, flavors, sweeteners, and antimicrobial preservatives are added to mask unpleasant taste or appearance, and to prevent mold and bacterial growth. The final products are stored in large tanks before final packaging. If the liquid is used for injection or ophthalmic use, the liquid must be sterilized. Solutions for external or oral use do not require sterilization but generally contain antimicrobial preservatives [16, 17]. 

It si ton Id also be realized that the military gas mask docs not supply or make air or oxygon and bonce should never be used in an atnu s diere deficient in oxygen. TuimelK and shafts of mine> following an explosion, the liolds of. hipK, and tanks and tank car containing volatile liquids are places likely to be dangerou.s in this respect. 

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