Risk evaluation - 1,588 entries found
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Leutscher A., Schipper P.G., Schwarz J.J., Snellink G., Balemans A.W.M.
Risiko-analyse [in Dutch]
Series of 5 articles on the following subjects: hazard analysis (definition and procedure); social acceptance of technical hazards (comparative study of various hazards, hazards as a consequence of technological progress, recent efforts of standardisation); hazard analysis of a mercaptan production plant (admissible hazard, nuisances, annoyance caused by bad smells, hazard evaluation under stationary and non-stationary process conditions); hazards during transport, transfer and storage of liquefied natural gas; conclusions of the "check-list committee" set up to draft directives for the Netherlands manufacturing industries.
TNO-Project, Jan. 1975, Vol.3, No.1, p.4-31. Illus. 43 ref.
Oliver T.P., Molyneux M.K.B.
Calculation of risks in burning and welding.
Problems associated with the fumes or gases generated during welding and cutting of metal plates in dockyards. Assessing the hazards of such fume is difficult since its composition depends upon the welding rods, the metal substrate, surface coatings, and the combination of atmospheric constituents due to the heat. Estimating the hazards is further complicated by differences in the work site, which outside the workshop may vary from a windswept ship deck to a small confined space. Air sampling, biological monitoring of blood and urine, and epidemiological studies are discussed as methods of evaluating exposure. The need for a more precise definition of parameters of risk and ventilation standards is emphasised.
Annals of Occupational Hygiene, Feb. 1975, Vol.17, No.3-4, p.295-302. Illus. 11 ref.
Model for evaluating fire hazard.
A simple fire sytem model is described that may be used to estimate fire hazards produced by materials or products. The model is based on the use of release rate data for heat, smoke, and toxic gases for the materials in the system. Basic fire model conditions are discussed, and the calculation procedure for heat, smoke and toxic gas concentrations is developed. Diagrams show the heat release and heat flux, air temperature, visibility, HCl and CO concentrations in latex foam and cotton batting fires.
Journal of Fire and Flammability, 5 July 1974, Vol.5, No.3, p.179-189. Illus. 1 ref.
Evaluation of radiation emergencies and accidents - Selected criteria and data.
This manual is intended to provide a convenient reference to criteria and data which would be useful in evaluating the consequences of radiation emergencies and accidents. The data refer to: method of estimating environmental hazards from airborne releases; emergency dose assessment; controlling radioactive contamination; instrumentation, measurement and protection factors; miscellaneous data on radiation shielding; conversion factors; rules of thumb. They consist mainly of figures, nomograms and tables compiled from various sources. Particular attention is paid to the special needs of developing countries.
Technical Reports Series No.152, International Atomic Energy Agency, Kärntner Ring 11, Postfach 590, 1011 Wien, Austria, 1974. 136p. Illus. 43 ref. Price: US-$6.00.
Economic analysis of hazards.
Presentation of a mathematical method of estimating the cost of occupational hazards and of measures to prevent or minimise them, of eliminating unfeasible solutions and selecting those that appear optimum. The analysis is illustrated by several examples, including a total analysis of a hypothetical industrial situation.
Journal of Safety Research, Dec. 1974, Vol.6, No.4, p.159-165. 6 ref.
Some bases for the evaluation of fire hazard in industrial buildings
Quelques bases de calcul du risque d'incendie dans les bâtiments industriels. [in French]
Scientific analysis of fire hazard is based on 2 fundamental principles: fire load (the most important parameter) and fire resitance of interior walls. This article shows up some lacunae in the mathematical formula for the fire load, comments on the "fire reaction index" (Ra) defined by the Fire Research Centre of the University of Ghent (Belgium) and suggests a new definition of "fire load". Ra values for 36 commonly used materials are given in tabular form.
Bulletin technique de la Suisse romande, Oct. 1974, Vol.100, No.22, p.432-437. Illus. 11 ref.
Decibels and noise factors - Various methods of measuring sound levels, annoyance and harmful effects due to noise, using physical measurements
Décibels et indices de bruit - Diverses méthodes d'évaluation des niveaux sonores, gêne et nuisance dues au bruit à partir de mesures physiques. [in French]
After a reminder that the decibel is not a unit, but a way of counting which can be applied to any quantity, the author of this booklet studies the physical measurements of a source of noise (sound pressure level, acoustic power), so-called subjective measurements, assessment of annoyance or harmful effects of steady-state noise, and influence of noise duration or other parameters. Index of commonly used units.
Masson, 120 Boulevard St-Germain, 75006 Paris, France, 1974. 50p. Illus. 55 ref. Price: FF.25.00.
Ščalaev I.L., Byhovskij A.V., Saltykov L.D., Pavlov I.V., Komodov A.A., Šiškin V.I.
Basis of evaluation of radioactivity in uranium mines
Osnovnye principy ocenki radiacionnoj obstanovki v uranovyh rudnikah [in Russian]
The authors show that radioactivity in uranium mines is essentially a function of the latent energy of airborne daughter products of radon. They indicate the optimum volume of information necessary in order to define the noxiousness of the radioactive environment (external radiation, atmospheric contamination by α-emitting radioisotopes and by radon and its daughters), and to determine the protective measures to be taken.
Gigiena i sanitarija, Oct. 1974, No.10, p.41-46. 10 ref.
Lossack M., Lehmann H.
Evaluation of the magnitude of explosion hazard by means of a check list
Beurteilung des Umfanges einer Explosionsgefahr mittels Leitschema [in German]
A check list, intended as an aid to the assessment of in-plant explosion hazard, is presented and commented upon. It contains some 50 points concerning production methods used in the plant, characteristics of the combustible substances used, precautions adopted to prevent explosions, and definitive evaluation of explosion hazard in the plant. This check list is effective not only as a precaution for the prevention of explosions but as a useful instrument for maintenance work in plants where there is an explosion hazard.
Unser Brandschutz, wissenschaftlich-technische Beilage 4/1974, p.57-60. 10 ref.
Usefulness of measurements of electric field strength in determining the biological effects of high frequencies
Przydatność pomiaru natężenia pola elektrycznego do oceny biologicznego oddziaływania pól wielkiej częstotliwości [in Polish]
Study carried out to determine the quantity of energy absorbed when the field intensity remains stable while the other parameters of the field and the dimensions and location of the biological model vary. Basing his work on the theory of quasi-stationary fields and the theory of electric circuits, the author constructed an electrical scheme equivalent to cylindrically-formed biological models placed in parallel to the line of forces of the high frequency field. He calculated the mean value of the absorption coefficient in the 0.1 to 100MHz frequency range for models 1.8, 1.5 and 0.18m in length, and demonstrates that this coefficient is dependent rigorously on the geometry of the model and its location in relation to the source of the field. He concludes that knowledge of the intensity and frequency of fields is not in itself sufficient to enable their biological effects on man to be measured exactly for the purpose of declaring electromagnetic fields to be harmful to man or not.
Prace Centralnego instytutu ochrony pracy, 1974, Vol.24, No.80, p.57-82. Illus. 31 ref.
Jacobsen J., Buntenkötter S., Schreyer L.
Hazard ranges of electric currents
Gefährdungsbereiche elektrischer Ströme [in German]
Results of experiments with pigs to determine the mean hazardous current intensity for ventricular fibrillation are discussed. The minimum current intensity, being fatal under worst-case conditions, and the dangerous values of different current types are indicated. The heart-current factor, which allows for the amount of current flowing through the heart, depends on the current path in the body; values for this factor are tabulated. The effects of an electrical accident are subdivided into 3 classes in relation to the intensity and resistance of the total circuit. Finally, the safe ranges of a current-operated earth leakage circuit breaker with 30mA rated leakage current are dealt with.
etz - Elektrotechnik + Automation, Ausgabe B, Berlin (Westsektoren), 1974, Vol.26, No.12, p.321-325. Illus. 8 ref.
Maltoni C., Lefemine G.
Carcinogenicity bioassays of vinyl chloride - I. Research plan and early results.
An investigation into the carcinogenic potentialities of vinyl chloride in experimental animals. The effects of this compound are being studied in relation to various experimental factors (route of administration, dose level, length of treatment, species, strain, age of the animals, etc.). Preliminary results are presented. A direct relationship has been found between dose and length of treatment, and neoplastic response.
Environmental Research, 1974, Vol.7, No.3, p.387-405. Illus. 25 ref.
An approach to chemical carcinogens.
Many common industrial chemicals have been shown to be carcinogenic by animal experiment, but not all present a carcinogenic hazard to workers exposed to them in industrial conditions. It is essential for judgments to be made as to the degree of hazard presented by individual carcinogens, and to assess what protective measures need be applied. Each carcinogen constitutes a different problem and requires an individual judgment. The role of the United Kingdom Employment Medical Advisory Service in making such assessments is discussed.
Journal of the Society of Occupational Medicine, July 1974, Vol.24, No.3, p.90-95. 20 ref.
Safety measures to prevent reaching into the danger area of metalworking presses
Nachgreifsicherheit an Pressen der Metallbearbeitung [in German]
The author defines the limits of the hazard of reaching into the danger area and compares the research carried on up to the present on the velocity of the in-and-out reaching movement of the hand, considered as a safety criterion in this field. Guarding against reaching into the danger area of a press is basically linked to the problem of the inertial stroke of the ram. The author describes a method for measuring the inertia. The value of 1.6m/s laid down as a guideline in the German safety regulations is perfectly justified, in spite of slight differences of opinion. It is nevertheless only a first approximation, and further research is required.
Die Berufsgenossenschaft, June 1974, Vol.26, No.6, p.239-246. Illus. 14 ref.
Horváth M., Frantík E.
Quantitative interpretation of experimental toxicological data: utilisation of control substances
Kvantitativní interpretace experimentálních toxikologických dat: použití referenčních látek [in Czech]
In experimental toxicology, functional tests can be used to determine risk criteria only if the critical threshold of effect of the new substance is determined in given conditions. The authors propose a method whereby this effect is expressed by the ratio between the concentrations (or doses) of the substance concerned and a control substance producing identical effects. This method is particularly appropriate for comparing the results of tests performed in different laboratories.
Pracovní lékařství, Jan. 1974, Vol.26, No.1, p.2-8. Illus. 11 ref.
Mutagenesis and its environmental implications.
Continuing and expanded efforts in evaluating chemicals for mutagenicity are urgently needed since many chemicals to which humans are exposed have not been tested in this regard. This article deals with: (a) the prevalence of genetic syndromes in the population; (b) the difficulties of detecting specific mutagenic chemicals in humans; and (c) the practical animal procedures at present available for characterising mutagenic compounds. Routine screening of chemicals in the environment and testing of new materials before their marketing offer the most practical means of eliminating agents that contribute to the high incidence of genetic abnormalities.
Journal of Occupational Medicine, Oct. 1974, Vol.16, No.10, p.672-675. 9 ref.
Assessment of duration of peaks above maximum admissible methane concentrations
Raspredelenie dlitel'nosti prevyšenij dopustimogo urovnja koncentracii metana [in Russian]
Description of a mathematical method for assessing both the average concentration and the duration of peaks above the maximum admissible concentration of methane contained in the air emerging from mine workings. The method is based on the probability of methane outbursts and has been experimentally tested. The assessment of the above parameters is vital for the design of automatic safety systems for gassy coal mines.
Gornyj žurnal - Izvestija vysših učebnyh zavedenij, May 1974, No.5, p.80-85. Illus. 5 ref.
A series of 15 monographs consisting of data reviewed and evaluated by an international group of experts (Lyon, 4-11 Feb. 1974). Individual monographs are devoted to: diethylstilboestrol (stilboestrol), ethinyloestradiol, mestranol, oestradiol-17β, oestriol, oestrone, progesterone, chlormadinone acetate, medroxyprogesterone acetate, dimethisterone, ethynodiol diacetate, norethisterone and norethisterone acetate, norethynodrel, norgestrel and testosterone. The volume also includes general conclusions on hormones.
IARC monographs on the evaluation of carcinogenic risk of chemicals to man, Vol.6. International Agency for Research on Cancer, 150 cours Albert Thomas, 69008 Lyon, France, 1974. 243p. Illus. 402 ref. Price: SF.18.00.
Some aromatic amines, hydrazine and related substances, N-nitroso compounds and miscellaneous alkylating agents.
A series of 28 monographs consisting of data reviewed and evaluated by an international group of experts (Lyon, 18-25 June 1973). Individual monographs are devoted to: aniline, 3,3'-dimethoxybenzidine, 3,3'-dichlorobenzidine, magenta, 4,4'-methylene bis(2-chloroaniline), 4,4'-methylene bis(2-methylaniline), 4,4'-methylenedianiline, 1-naphthylamine, 2-naphthylamine, 4-nitrobiphenyl, N,N'-bis(2-chloroethyl)-2-naphthylamine, hydrazine, 1,1-dimethylhydrazine, 1,2-dimethylhydrazine, 1,2-diethylhydrazine, isonicotinic acid hydrazide, maleic hydrazide, N-methyl-N'-nitro-N-nitrosoguanidine, N-nitroso-di-n-butylamine, N-nitroso-N-methylurethane, streptozotocin, bis(chloromethyl)ether, chloromethyl methyl ether, 1,4-butanediol dimethanesulfonate, 1,3-propane sultone, β-propiolactone, dimethyl sulfate and diethyl sulfate.
IARC monographs on the evaluation of carcinogenic risk of chemicals to man, Vol.4. International Agency for Research on Cancer, 150 cours Albert Thomas, 69008 Lyon, France, 1974. 286p. 697 ref. Price: SF.18.00.
Some organochlorine pesticides.
A series of 12 monographs consisting of data reviewed and evaluated by an international group of experts (Lyon, 22-29 Oct. 1973). Individual monographs are devoted to: aldrin, Aramite, BHC (technical grades) and lindane, chlorobenzilate, DDT and associated substances, dieldrin, endrin, heptachlor, methoxychlor, mirex, quintozene (pentachloronitrobenzene) and terpene polychlorinates (Strobane).
IARC monographs on the evaluation of carcinogenic risk of chemicals to man, Vol.5. International Agency for Research on Cancer, 150 cours Albert Thomas, 69008 Lyon, France, 1974. 241p. 932 ref. Price: SF.18.00.
Rosensteel R.E., Shama S.K., Flesch J.P.
Occupational health case report - No.1.
A report of an investigation of the spinning and cutting areas of a viscose rayon manufacturing plant. The study population for the combined environmental-medical evaluation consisted of 27 spinnermen and 28 cuttermen. It was determined that: (1) exposures to carbon disulfide vapours at the concentrations found in this environment are toxic to cuttermen or others working in the cutter area; (2) spinnermen are exposed to levels of carbon disulfide within recommended limits but may be exposed occasionally to levels of carbon disulfide potentially toxic to them; (3) hazard exists for any worker exposed to excessive levels of carbon disulfide because of the dizziness which may result. Environmental and medical recommendations are made.
Journal of Occupational Medicine, Jan. 1974, Vol.16, No.1, p.22-30. Illus. 28 ref.
Detection of accident hazards in a work environment
Wykrywanie zagrożeń wypadkowych w pracy [in Polish]
Booklet consisting of 5 articles by different authors on the following topics: methods for detecting the existence of accident hazards, accident prevention at the level of the undertaking, making safety an integral part of work organisation, experience acquired in occupational safety in a metallurgical plant, assessment of possible workplace hazards. The propositions, suggestions and guidelines for studying hazards can be used as a basis for drawing up a planned and controlled safety programme, since no preventive action can be efficacious without prior knowledge of the sources of accidents, their primary causes, and the structure of the accident hazard.
Instytut wydawniczy CRZZ, Warszawa, Poland, 1973. 100p.
Paints and varnishes - Determination of flashpoint - Closed cup method.
Peintures et vernis - Détermination du point d'éclair - Méthode en vase clos. [in French]
This standard, which should be read in conjunction with ISO Standard 1516, contains the following sections: scope and field of application; references; definition; principle; apparatus; sampling; procedure; calculation of corrected flashpoint; precision; test report; reference tests. Annex: suitable closed cups specified in national standards.
International Standard ISO 1523-1973(E), International Organization for Standardization, Case postale 56, 1211 Genève 20, Switzerland, 15 Dec. 1973. 4p. Price: SF.12.00.
Certain polycyclic aromatic hydrocarbons and heterocyclic compounds.
A series of 17 monographs consisting of data reviewed and evaluated by an international group of experts (Lyon, 5-11 Dec. 1972). Individual monographs are devoted to: benz(a)anthracene, benzo(b)fluoranthene, benzo(j)fluoranthene, benzo(a)pyrene, benzo(e)pyrene, chrysene, dibenz(a,h)anthracene, dibenzo(h,rst)pentaphene, dibenzo(a,e)pyrene, dibenzo(a,h)pyrene, dibenzo(a,i)pyrene, dibenzo(a,l)pyrene, indenopyrene, benz(c)acridine, dibenz(a,h)acridine, dibenz(a,j)acridine and 7H-dibenzo(c,g)carbazole. The historical development of knowledge concerning polycyclic aromatic hydrocarbons and environmental exposures to them are considered separately from the monographs.
IARC monographs on the evaluation of carcinogenic risk of chemicals to man, Vol.3. International Agency for Research on Cancer, 150 cours Albert Thomas, 69008 Lyon, France, 1973. 271p. 1002 ref. Price: SF.18.00.
Some inorganic and organometallic compounds.
A series of 7 monographs consisting of data reviewed and evaluated by an international group of experts (Lyon, 29 Nov.-4 Dec. 1972). Individual monographs are devoted to: asbestos, arsenic and inorganic arsenic compounds, cadmium and inorganic cadmium compounds, chromium and inorganic chromium compounds, nickel and inorganic nickel compounds, tetraethyl- and tetramethyllead and iron-carbohydrate complexes.
IARC monographs on the evaluation of carcinogenic risk of chemicals to man, Vol.2. International Agency for Research on Cancer, 150 cours Albert Thomas, 69008 Lyon, France, 1973. 181p. Illus. 432 ref. Price: SF.12.00.
Limits of allowable concentration for the assessment of pneumoconiosis hazard
I MAC per la valutazione del rischio pneumoconiogeno [in Italian]
Recalls the trends in pneumoconiosis control in many countries. The article gives the maximum permissible dust levels in force in several countries (Italy, Australia, Belgium, France, Germany (Fed.Rep.), Japan, Republic of South Africa, Sweden, USSR, USA and Yugoslavia), which are compared in several tables. Description of an experiment carried out in Italy by the National Accident Prevention Institute (ENPI) in 120 undertakings presenting a silicosis hazard, in 60 of which dust levels exceeded the TLV fixed in USA by the American Conference of Governmental Industrial Hygienists (ACGIH). Results of clinical and radiological examinations on 5,164 workers in metal trades, 46 of whom showed symptoms of nodular silicosis and 459 had suspected silicosis. Most of the silicotic workers were employed in an environment where the silicosis hazard exceeded the ACGIH TLV. Although findings obtained from such a small sample could not be extrapolated, the author believes that a correlation exists between the fact that the hazard index has been exceeded and its biological evidence.
Securitas, 1973, Vol.58, No.7, p.723-730. Illus.
Navakatikjan A.O., Jakovlev E.N.
Utilisation of a relative intensity index to determine sickness and accident risks
Ispol'zovanie pokazatelja otnositel'noj intensivnosti dlja opredelenija stepeni riska polučenija travmy [in Russian]
Description of a method enabling hazard indices for certain occupations, age groups etc., to be calculated. These indices correspond to the proportion of the accident-injured or sick to the total number of workers in the group under consideration. They reflect the accident or sickness risk and the occurrence rate of various types of injury compared to an average rate.
Sovetskoe zdravoohranenie, Oct. 1973, No.10, p.36-39. 6 ref.
Epidemiological methods in occupational medicine - Part I: Principles, parameters and types of study
Metodi epidemiologici in medicina del lavoro - Parte I: Principi, parametri e tipi di studio [in Italian]
In the 1st part of this monograph, it is suggested that new methods and means should be applied to the study of occupational diseases (including accidents) of an epidemic type which occur in developed countries. Review of the principles of epidemiological research and several basic definitions (hazard, hazard factor or indicator, etc.), giving parameters by which these may be quantified. A distinction is then made between various types of epidemiological study and, in this context, the problem is raised of choosing a group of individuals or "control" group, required to provide a comparison to subjects exposed to a hazard or affected by a disease.
Medicina del lavoro, Sep.-Oct. 1973, Vol.64, N.9-10, p.330-349. 25 ref.
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.
Uncertainties in the evaluation of the biological effects of microwave and radiofrequency radiation.
These uncertainties are discussed in terms of macroscopic and molecular interactions. Difficulties encountered in internal dosimetry are related to radiation reflections and the internal distribution of absorbed energy. Possible mechanisms for low-intensity molecular effects are considered from the point of view of activation energies and frequency dependence. The possible role of non-uniform temperature profiles and gradients is related to putative microwave and radiofrequency biological effects.
Health Physics, Oct. 1973, Vol.25, No.4, p.387-404. Illus. 47 ref.
An epidemiologist takes a look at radiation risks.
A set of 5 lectures. The purpose of this series was to explore the use of epidemiological surveys generally, and specifically the Oxford Survey of Childhood Cancers, in evaluating the hazards of ionising radiation. The limitations and the advantages of epidemiological approach are presented and indications for its use discussed.
Bureau of Radiological Health, Rockville, Maryland 20852, USA. Superintendent of Documents, Government Printing Office, Washington, D.C. 20402, USA, Jan. 1973. 108p. 95 ref. Price: US-$1.25.
Leroux J., Davey A.B.C., Paillard A.
Proposed standard methodology for the evaluation of silicosis hazards.
Following 5 years of research, the authors propose a versatile analytical technique which is deemed suitable for almost any quartz-containing respirable dust. The quartz content is determined from samples collected on 13-mm silver membrane filters which are analysed by X-ray diffraction and transmittance measurement. The accuracy is of the order of 3%, and the technique can be applied to crushed parent material, lung ash or other samples. The underlying mathematical considerationss are presented.
American Industrial Hygiene Association Journal, Sep. 1973, Vol.34, No.9, p.409-417. Illus. 13 ref.
Mătieş R., Niculescu T.
Studies on silicosis development in foundries
Cercetări cu privire la evoluţia silicozei în turnătorii [in Romanian]
226 cases of silicosis among workers in Romanian foundries were analysed, and the following parameters were examined: latency or mean exposure time to silicogenic dusts up to the first diagnosis; percentage of cases which developed; delay in passing from one stage of development to another; breakdown of cases according to length of service; mean age at first diagnosis; breakdown of cases by age groups. Results: mean exposure duration before the first diagnosis is 14.2 ± 5.8 years; the shortest latency periods are found among sand blasters and grinders (10.9 and 10.0 years), whereas foundry workers and crane operators have a prolonged latency (18 years). 70% of all cases remain stationary and 30% develop into more advanced stages after 10 years' observation. This development varies according to occupation: the disease develops in 6.8% of the cases among foundry workers and in 45.9% of the cases among sand blasters. Awareness of these factors facilitates a realistic appraisal of the silicosis hazard in the various work posts, industries and occupational groups.
Igiena, May 1973, Vol.22, No.5, p.299-306. 9 ref.
International standard ISO 1516-1973 (E), International Organization for Standardization, Case postale 56, 1211 Genève 20, Switzerland, 15 Dec. 1973. 3p. Price: SF.8.00.
Paints and varnishes - Determination of the danger classification by flashpoint - Closed cup method
Peintures et vernis - Détermination des catégories de danger par le point d'éclair - Méthode en vase clos. [in French]
Standard specifying a test method to determine if a paint or varnish gives off sufficiently flammable vapour to cause ignition in the presence of a flame. Description of the test principle, apparatus (test cup, water bath, thermometers, support), sampling and determination. Advice for the test report. Reference to various national standards specifying suitable closed cups.
International Organization for Standardization, Case postale 56, 1211 Genève 20, Switzerland, 15 Dec.1973. 3p. Price: Fs.8.00.
Lopes Cardozo R.
The dispersal of radioactive matter by evaporation.
The evaporation velocity of various radioactive substances that do not have a negligible vapour pressure under normal conditions of temperature and pressure is calculated. The maximum permissible concentration in air is readily attained for many compounds. A tabular classification is given, based on an evaporation time which can be calculated for any compound under given conditions. It is concluded that this classification provides a clearer assessment of the danger to persons handling radioactive substances than the rigid radionuclide classification.
Health Physics, Dec. 1973, Vol.25, No.6, p.593-598. Illus. 8 ref.
IARC monographs on the evaluation of carcinogenic risk of chemicals to man - Vol.1.
A series of 19 monographs consisting of data reviewed and evaluated by an international group of experts (Geneva, 13-17 Dec. 1971). Individual monographs are devoted to: inorganic substances (beryllium, iron and lead and some of their compounds), carbon tetrachloride, chloroform, auramine, 4-aminobiphenyl, benzidine, 3,3'-dimethylbenzidine, various N-nitroso compounds, aflatoxins, etc.
International Agency for Research on Cancer, 150 cours Albert Thomas, 69008 Lyon, France, 1972. 184p. 592 ref. Price: SF.4.00.
Recording, analysis and evaluation of hazards and their complications, occupational accidents, diseases and other related impairments
Erfassung, Analyse und Bewertung der Gefährdungen und Erschwernisse, der Arbeitsunfälle, der Berufskrankheiten und der sonstigen bedingten Schäden [in German]
The nature of the risk and the conditions leading to health impairment are used as starting points in the assessment of hazards. Methods of recording and analysing hazards and occupational health impairments (accidents and diseases) are considered in detail. Statistical techniques used in occupational safety are described.
Arbeitswissenschaftliche Lehrbriefe, Reihe Arbeitsschutz, No.4. Verlag Tribüne, Am Treptower Park 28-30, x 1193 , 1972. 166p. Illus. 20 ref. Price: M.2.30.
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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