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Secteur du bâtiment et des travaux publics (RSS)
For many, a sweater or an extra degree on the thermostat is all that's needed to keep warm at work on a cold day. Not so for those working outside or in an area that is poorly insulated or without heat. These workers may be at risk of cold stress. What constitutes cold stress and its effects can vary across different areas of the country. In regions relatively unaccustomed to winter weather, near freezing temperatures are considered factors for cold stress. Whenever temperatures drop decidedly below normal and wind speed increases, heat can more rapidly leave the body. These weather-related...
Erionite in Road Gravel Associated With Interstitial and Pleural Changes—An Occupational Hazard in Western United States was published in the August 2011 edition of the Journal of Occupational & Environmental Medicine. The article provides the results of a study to determine the rate of chest radiographic abnormalities among residents of North Dakota potentially exposed to road gravel containing the fibrous mineral erionite. The study found that interstitial, pleural, or both changes typically associated with asbestos exposure were observed in seven (21 per cent) individuals. The primary...
The purpose of this pilot study was to assess the potential for inadvertent exposure of the public to respirable crystalline silica (RCS) from construction activities. The study assessed the respirable dust (RD) from, demolition, block cutting, road building, general construction activities and city centre air from 13 visits to 7 sites. In total, 48 samples from the construction activities and 11 city centre air samples, for comparison, were collected. The results obtained for RD and RCS were generally very low. Only 10 % of results (from two sites) for RCS were above 0.01 mg.m-3, which is 10 ...
Dans le secteur de la construction, l’exposition professionnelle à la silice cristalline est fréquente dans plusieurs métiers, en raison de sa présence dans de nombreux matériaux manipulés, par exemple le béton, le mortier et la brique, et à cause des procédés mis en oeuvre impliquant des opérations telles que le cassage, le meulage ou le sciage. Au Québec, tout comme dans d’autres juridictions, les niveaux d’exposition à la silice cristalline dans le secteur de la construction dépassent...
Inmates and employees at 10 federal prisons were exposed to toxic metals and other hazardous substances while processing electronic waste for recycling, a four-year investigation by the Justice Department's inspector general found. A report issued last week by the Office of the Inspector General said unspecified amounts of that waste were shipped overseas, possibly to undeveloped countries. Reports have multiplied in recent years that electronic waste is being dumped in developing nations, where it can harm local populations by leaching into groundwater or attracting scavengers who are exposed...
A meta-analysis The International Agency for Research on Cancer has classified occupational exposure as a painter as ‘carcinogenic to humans', largely based on increased risks of bladder and lung cancer. A meta-analysis, including more than 2900 incident cases or deaths from bladder cancer among painters reported in 41 cohort (n=2), record linkage (n=9) and case–control (n=30) studies, was conducted to quantitatively compare the results of the different study designs and the potential confounding effect of smoking as well as other occupational exposures. The summary relative risk...
QinetiQ was tasked by Morgan Est plc to provide Doppler technicians to monitor venous gas emboli (VGE) in compressed air tunnel workers from the Belfast Sewer Project. This report, presents an analysis of Doppler data, with reference to pre-existing information on Doppler monitoring of compressed air tunnel workers. QinetiQ Doppler technicians conducted the monitoring according to an approved ethical protocol. The pressure for the compressed air work exposures ranged from 0.67 to 1.8 bar gauge, with 21 work shifts monitored. Data were obtained from 65 Doppler monitoring sessions conducted on 17...
Researchers investigating welding fume exposures have found that welders frequently are exposed to manganese at or above the American Conference of Governmental Industrial Hygienists (ACGIH) recommended limit of 0.2 milligrams per cubic meter. Source : http://ehstoday.com/industrial_hygiene/news/welders-exposed-manganese-above-recommended-levels-3151/ Résultats de la recherche : http://www.informaworld.com/smpp/content~db=all?content=10.1080/15459620903454600
The use of asbestos has been banned in Australia since 2003. However, as a result of the widespread use of asbestos in the past, there remains a large amount of asbestos containing materials (ACMs) in older buildings. These ACMs include asbestos cement sheet walls, asbestos cement pipes and asbestos containing electrical switchboards. Construction and maintenance workers are likely to be involved in work tasks that may disturb ACMs. Therefore, there is a substantial risk of potential exposure to asbestos in these workers unless occupational health and safety (OHS) requirements on the management...
Repérage amiante : le maillon faible Les opérations de réhabilitation et de démolition sont des opérations à très hauts risques, compte tenu de la présence potentielle d'amiante dans de nombreux matériaux et produits, et nécessitent de ce fait une recherche exhaustive des matériaux et produits amiantifères concernés par les travaux avant le démarrage de l'opération. Dans le département de la Manche, l'inspection du travail mène depuis 2005 une campagne ciblée...
Insuffisance des repérages : des responsabilités et des défaillances multiples Les opérations de réhabilitation et de démolition sont des opérations à très hauts risques, compte tenu de la présence potentielle d'amiante dans de nombreux matériaux et produits, et nécessitent de ce fait une recherche exhaustive des matériaux et produits amiantifères concernés par les travaux avant le démarrage de l'opération. Dans le département de la Manche, l'inspection du travail...
Exposure to oxides of nitrogen (NOx which denotes the mixture of nitrogen monoxide, NO, and nitrogen dioxide, NO2) commonly arises in the tunnelling industry from diesel engine exhaust emissions and from the use of explosives. The British Tunnelling Society (BTS) guidance levels for NO are 5 ppm for an 8 hour time weighted average (TWA) and 15 ppm for a 15 minute short term exposure limit (STEL). Real-time monitors are used by the construction industry as they provide a means of checking that controls are effective. Previous laboratory work at HSL evaluated various commercial detectors potentially...
Repérage amiante : le maillon faible Les opérations de réhabilitation et de démolition sont des opérations à très hauts risques, compte tenu de la présence potentielle d'amiante dans de nombreux matériaux et produits, et nécessitent de ce fait une recherche exhaustive des matériaux et produits amiantifères concernés par les travaux avant le démarrage de l'opération. Source: http://www.hst.fr/inrs-pub/inrs01.nsf/IntranetObject-accesParIntranetID/OM:Document:D91ADF285E500C82C125764200395765...
Le démantèlement de matériaux à base d’amiante peut générer des concentrations importantes de fibres dans l’air. L’exposition à l’amiante se mesure généralement dans la zone respiratoire du travailleur. La concentration de fibres dans l’air peut dépendre de plusieurs déterminants tels que la teneur en amiante dans le matériau, la matrice dans laquelle sont dispersées les fibres, la friabilité du matériau, les techniques de désamiantage, etc. La relation entre...
This guidance document addresses the control of employee exposures to respirable dust containing crystalline silica, which is known to cause silicosis, a serious lung disease, as well as increase the risk of lung cancer and other systemic diseases. This document provides information on the effectiveness of various engineering control approaches for several kinds of construction operations and equipment, and contains recommendations for work practices and respiratory protection, as appropriate. http://www.osha.gov/Publications/3362silica-exposures.pdf
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