Exposure evaluation - 1,808 entries found
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Complex assessment and regulation of the microclimatic conditions of work in underground mines
Kompleksnaja ocenka i reglamentirovanie teplovyh uslovij truda v šahtah [in Russian]
Results of research into microclimatic conditions at depths of 700-1,100m : temperature and air speed are not sufficient to characterise subjective heat load. A mathematical model is proposed to express the individual's thermal balance in the conditions studied and an account is given of a procedure for the complex assessment of thermal conditions in a mine workings (with a description of a wet-bulb electrothermometer which responds simultaneously to temperature, air speed and humidity and to thermal radiation from surrounding surfaces). Graphs indicate the work capacity (in kgm) as a function of temperature and humidity and the acceptable limits of the microclimate for mine work at great depth.
Ugol' Ukrainy, Nov. 1973, No.11, p.35-37. Illus.
Proceedings of the Symposium on the assessment of exposure and risk.
The proceedings of this symposium held in London on 23-24 Nov. 1972 comprise 9 papers dealing with measurable or identifiable pathological effects of a chemical or physical agent, quantitative assessment of hazards of chemical carcinogens and of risk of occupational deafness, problems in establishing aetiology of disease in the cases of bladder cancer and cancer in connection with asbestos exposure, and with medico-legal consequences and assessment of compensation. The discussions are summarised.
Research Panel, Society of Occupational Medicine, Royal College of Physicians, Regent's Park, London N.W.1, United Kingdom, July 1973. 169p. Illus. 155 ref. Price: £1.50.
Evaluation of asbestos exposure in the working environment - Recommendation of Subcommittee on Asbestosis of the Permanent Commission and International Association on Occupational Health.
The following aspects for evaluating respirable asbestos fibres in the working environment are discussed: collection of airborne sample (membrane filter technique); sampling location; sampling time; fibre enumeration; chemical characterisation of fibres (type, metals, free silica, organic contaminants); physical characterisation of fibres; alternative procedures for exposure evaluation.
Journal of Occupational Medicine, July 1972, Vol.14, No.7, p.560-562. 4 ref.
Determining noise exposure to continuous stochastically fluctuating acoustic phenomena - A methodical study of work design aspects
Zur Ermittlung der Lärmexposition bei langzeitig stochastisch schwankenden Schallereignissen - eine methodische Studie unter dem Aspekt der Arbeitsgestaltung [in German]
Current noise-level measurement techniques do not give satisfactory data for noise control measures when used on continuous stochastically fluctuating noise. An attempt is made to supplement these methods by the multi-moment technique. Studies show the suitability of this technique for: (a) determining the type, location, incidence, time and duration of continuous stochastically fluctuating acoustic phenomena; (b) the statistical analysis of occupational health features in the behaviour of exposed persons; and (c) the collection of data for calculating the probable utility of noise control measures. Scope and limitations of the technique are described.
Zeitschrift für die gesamte Hygiene und ihre Grenzgebiete, Mar. 1972, Vol.18, No.3, p.184-190. Illus. 9 ref.
Marinjako A.Z., Lipovoj V.V.
Evaluating total noise exposure in the case of intermittent noise
Učet summarnogo vremeni otdel'nyh šumovyh vozdejstvij pri gigieničeskoj ocenke preryvistyh šumov [in Russian]
The effects of exposure to certain types of intermittent noise were studied in an anechoic chamber, and compared with exposure to continuous noise for the same aggregate period of time. It was found in every case that the determining factor in the assessment of intermittent noise was the time distribution of periods of noise and absence of noise, rather than the total exposure to noise.
Gigiena truda i professional'nye zabolevanija, Aug. 1972, Vol.16, No.8, p.15-18. Illus. 2 ref.
Tola S., Hernberg S., Nikkanen J.
Occupational lead exposure in Finland - II. Service stations and garages
Random blood samples were taken from 76 Helsinki service-station workers and 83 automobile repair-shop workers to measure the blood lead (Pb-B) levels, erythrocyte γ-aminolaevulinic acid dehydratase (ALA-D) activities and haemoglobin values. The mean Pb-B of repair-shop workers (35µg/100mL) was higher than the mean Pb-B of service-station workers (21µg/100mL). Car-body workers had the highest mean Pb-B (46µg/100mL); the mean Pb-B in mechanics was 32µg/100mL and in car washers 17µg.100mL. In the petrol-tank filling personnel this value was 20µg/100mL. All these findings were in excess of the mean Pb-B of 10µg/100mL found in the general urban population of Helsiniki. The results are discussed in the light of lead exposure due to working methods.
Work - Environment - Health, 1972, Vol.9, No.3, p.102-105. 8 ref.
Dupuis H., Broicher H.A.
Measurement techniques for determining the stress imposed on man by vibrations
Techniques de mesure des vibrations auxquelles l'homme est exposé. [in French]
French translation of: Messtechnishe Verfahren zur Bestimmung der Schwingbelastung des Menschen. Messtechnische Briefe, Darmstadt, Germany (Fed.Rep.), Apr. 1969, No.1, p.12-15. Illus. 13 ref. The authors first consider the basic parameters which must be understood in order to evaluate vibrations and then discuss the method of measuring vibration acceleration, and the mode and force of vibration. In discussing amplitude classifications as a method of evaluation, they present in a diagram the results of 438 driving tests on motor cars, earthmoving machines and tractors. A vibration range of 0.5-5m/s2 was recorded at the driver's seat. Frequency analysis is also briefly discussed.
Translation INRS 113 B-71, Institut national de recherche et de sécurité, 30 rue Olivier-Noyer, 75680 Paris Cedex 14, France, 1971, 14p. Illus. 13 ref.
Evaluation of asbestos exposure in the working environment - Recommendation of the Sub-Committee on Asbestosis of the Permanent Commissson and International Association on Occupational Health
This recommendation which was adopted at the 33rd Italian National Congress on Occupational Health (Santa Margherita di Pula, Cagliari, Italy, 24-27 September 1970) deals with methods of determining the hazard of asbestos fibres (atmospheric sampling, sampling time and place, fibre counts), the determination of physical and chemical characteristics of various fibre types, their free silica content and the presence of biologically active metallic or organic contaminants in the dust samples. Countries which have been using other specific procedures for a number of years are recommended to continue using these non-uniform procedures along with the new uniform procedures so that comparative data can be made available.
Work - Environment - Health, 1971, Vol.8, No.3, p.71-73. 4 ref.
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