ur v u i i U i l l l f l h=3 L--- J .oS ==3 Industrial Hygiene Dige at May. 1963 moderately black exhaust contains 18 trig, per cubic foot.

IONIZING RADIATION Rfl 42-6 Radiation level near beta ray gouge used to measure thickness of steel strip is checked with a Geiger counter Courtesy Armco Steel Corp mabon One example is the employment of radioacbve sources to effect quantitative or dimensional control of industrial materials (for example, to measure fluid-flow rates, and thicknesses of semifinished or finished products) Sealed sources Sealed sources are avail able that have widely varying amounts of radioactivity A high intensity source may require so much shielding that it will not be portable Shielding, control devices, and procedures should be designed by someone experienced in such work Keeping external exposures to personnel under control should be easily accomplished with the aid of alarms, strict control of access, and thor ough monitoring (Fig. 42-6).

Industrial Hygiene Digest May, 1964 condition are discussed.

/ MINUTES OF THE SAFETY COMMITTEE MEETING MARRIOTT MOTOR HOTEL SADDLE BROOK, NEW JERSEY SEPTEMBER 19, 1967 Mr.

Industrial Hygiene Digest June, 196S 540 PhysiologicarAsp'ect* of Work Meaeurement L.

Industrial Hygiene Digest Jum,. 196$ 601 Air Pollution Study.

Industrial Hygiene Digest, Industrial Health News, Literature Abstracts, Medical, Engineering, Chemical, Toxicological, Legal.

Industrial Hygiene Digest April. 196i when sulfur dioxide was administered by nose, nasal flow resistance (Rn) was measured by means of a catheter placed in the posterior pharynx.

Industrial Hygiene Digest October, 1966 regulate andtomodify them.

Sources of Help sponsors several building and safety stand ards and assists in the preparation of many standards sponsored by other groups These codes, with a few exceptions, are prepared by representative sectional committees operat ing under the rules of procedure of the Ameri can Standards Institute They are intended to serve as a basis for regulations promulgated by states and cities, as standards for the fed eral government, and for voluntary use by industry, architects, and consulting engineers The section also serves as safety consultant to the NBS and, on request, to other govern mental departments in the preparation of specifications, analvsis of bids, and final ac ceptance tests ofsuch equipment as elevators, electrical equipment, and lightning protec tion The section arranges for other NBS divi sions to conduct basic research on equipment to secure data for codes Such studies have included transmission of welding glass m the ultraviolet, visible, and infrared spectra, and performance of elevator hoistway door inter locks, hydraulic buffers, and undercar safe ties Of particular interest to safety' engineers is the Code for Head, Eye, and Respiratory Protection, developed from tests conducted at the bureau The bureau conducts research on problems relating to fire safety and the fire resistance of matenals, and assists other organizations in the formulation of standards and codes per taining to fire and structural hazards in build ings The monthly Technical News Bulletin reports on progress of work, conferences, and new publications Department of Defense The Pentagon, Washington, D C 20301 See separate entries Department of the Air Force, Department of the Army, and Department of the Navy Department of Health, Education, and Welfare 330 Independence Ave SW , Washington, D C 20201 Public Health Service The Public Health Service has two operat ing agencies that are of especial interest to safety professionals (I) The Health Services and Mental Health Administration, and (II) the Consumer Protection and Environmental Health Service I Health Services and Mental Health Administration 330 C St SW , Washington, D C 20201 The National Center for Health Statistics, under the Health Services and Mental Health Administration, contains two divisions which collect statistics on accidents The National Health Survey Division and the National Vital Statistics Division The National Health Survey Division, m its Health Interview Survey, collects sta tistics on injuries and persons injured This survey obtains data on illness, impairments, and disability in the general population, and reports are published as data become avail able In household interviews, information is solicited on the kind of injury, the place of the accident (i e , at home, at work, or else where), whether a motor vehicle was in volved, and the degree of disability resulting The National Vital Statistics Division annually publishes figures on deaths from accidents and other causes in Vital Statistics of the United States and in preprints based on this information The numbers of deaths from accidents are listed by age, sex, place of accident, cause of death, and other details This division also collects provisional data based on a 10 per cent sample of deaths from motor vehicle and other accidents which are published in its monthly Vital Statistics Report II Consumer Protection and Environmental Health Service In 1968, the Consumer Protection and Environmental Health Service was organized as an operating agenev of the Department of Health, Education, and Welfare The serv ice "provides leadership and direction to programs and activities designed to assure effective protection forevery American against hazards to health in his environment and in the products and services which enter his life " To these ends, the Consumer Protection and Environmental Health Service 342

THE DOW CHEMICAL COMPANY MIDLAND.

TABLE 43-C EXTINGUISHERS SUITABLE FOR CLASS B FIRES, FOR FIRES IN FLAMMABLE LIQUIDS V INCH AND UNDER IN DEPTH Type of Hazard Baste Minimum Maximum Extinguisher Travel Distance Rating to Extinguishers For Extinguishers Labeled Pnor to June t, 1969 Light 4B 50 ft Ordinary 8B 50 ft Extra 12B 50 ft For Extinguishers Labeled After June 1, 1969 Light SB 10B 30 ft 50 Ordinary 10B 20B 30 ft 50 Extra 20B 40B 30 ft 50 Note For flammable liquid hazards of depth greater than Vi in, Class B fire extinguishers shall be pro vided on the bass of one numerical unit of Class B extinguishing potential per square foot of flammable liquid surface of the largest tank hazard within the area From National Fire Protection Association Standard No 10, Table 4210 the availability of the extinguisher for such protection Scattered or widely separated hazards shall be individually protected if the specified travel distances m Table 43-C are exceeded Likewise, extinguishers in the proximity of a hazard shall be care fully located so as to be accessible in the presence of a fire without undue danger to the operator Extinguishers with Class C ratings are re quired where energized electrical equipment may be encountered which would require a nonconducting extinguishing media This will include fire either directly involving or sur rounding electrical equipment Since the fire itself is a Class A or Class B hazard the ex tinguishers are sized and located on the basis of the anticipated Class A or B hazard Whenever possible, electrical equipment should be deenergized before attacking a Class C fire.

work is carried out.

( GM BRAKE SET VEHICLE APPLICATIONS (Cont'd.)

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