2010-11-01 12:00 - Messages

La prévention des intoxications dans les silos à fourrage

Les silos utilisés en milieu agricole sont réputés être des espaces clos selon le Règlement sur la santé et la sécurité du travail (RSST). Les espaces clos tels que les silos à tour conventionnelle comportent de multiples risques. Ceux-ci sont liés en partie à une atmosphère trop pauvre en oxygène remplacé par le dioxyde de carbone, à une présence de substances toxiques dont le monoxyde d’azote et le dioxyde d’azote, à des microorganismes ou encore, à une présence de matières combustibles.

Cette étude porte sur la documentation des gaz de fermentation du fourrage et sur la ventilation mécanique par soufflage des silos verticaux utilisés pour l’ensilage de ces fourrages.

Source: http://www.irsst.qc.ca/media/documents/PubIRSST/R-672.pdf

Nano Trust project

The review under the NanoTrust project summarises findings related to silver compounds and their use in nano state.
Silver has a rich history of use in medicine and hygiene due to its broad-spectrum toxicity to bacteria, fungi and algae. Silver has been used increasingly in its nano-particulate form, which, according to the review, exhibits an elevated toxic potential compared to traditional silver compounds.
Products containing nanosilver are one of the most important classes of nanoproducts. Nanosilver coatings on medical devices are used in hospital settings. In addition, items containing nanosilver are sold as various consumer products. The widespread use of nanosilver to fight bacterial growth has raised concerns, as low levels of silver ions could encourage the growth of silver-resistant bacteria.

Source : http://osha.europa.eu/en/news/nanotechnologies-assessment-of-nanosilver-products

Pesticide Incidents Report 2009/10

This report provides information on incidents and complaints involving pesticides investigated by the Field Operations Directorate of the Health and Safety Executive between 1 April 2009 and 31 March 2010. The report comprises statistical information on complaints and enforcement; a report on alleged ill-health incidents reviewed by HSE's Pesticide Incidents Appraisal Panel; and environmental and other complaints not alleging ill health.

Source : http://news.hse.gov.uk/2010/11/19/pesticide-incidents-report-200910/

Publication de directives internationales pour protéger les travailleurs de la santé contre le VIH et la tuberculose

Les travailleurs de la santé sont aux avant-postes de la fourniture de services de prévention, de traitement et de soins pour les personnes qui vivent avec le VIH et la tuberculose (TB) dans le monde entier. Ils risquent d'être exposés au VIH et à la TB dans le cadre de leurs activités professionnelles, mais souvent, ils n'ont pas eux-mêmes un accès adéquat à une protection et à un traitement. Pour combler cette lacune, de nouvelles directives internationales sont publiées aujourd'hui par l'Organisation internationale du Travail (OIT), l'Organisation mondiale de la santé (OMS) et le Programme commun des Nations Unies sur le VIH/SIDA (ONUSIDA).

Source : http://www.ilo.org/global/About_the_ILO/Media_and_public_information/Press_releases/lang--fr/WCMS_146755/index.htm

Chemicals linked to male breast cancer

Common workplace chemicals have been linked to an increased risk of male breast cancer. The authors of the European study conclude their findings “support growing evidence” linking environmental pollutants to the disease.
The study, whose findings are published this week in the journal Occupational and Environmental Medicine, investigated occupational risk factors for male breast cancer, using a case control study conducted in eight European countries. The researchers found male breast cancer incidence was particularly increased in motor vehicle mechanics, who were twice as likely to develop the disease. There was a clear “dose–effect” relationship, with the risk of developing the cancer increasing with duration of employment.

Source : http://www.hazards.org/greenjobs/blog/2010/11/18/chemicals-linked-to-male-breast-cancer/

Risk assessment for biological agents

Biological agents are everywhere, and while they may be very beneficial for life they may also be dangerous. Biological agents are relevant to many trades and occupations, and a sizeable portion of the working population faces the risk of exposure. Despite this, workers and employers tend to know little about the risk of exposure to biological agents. Risk assessment for biological agents is challenging, for many reasons. First, because of the diversity of these agents. In addition, occupational exposure limits (OELs) have not been set for many of them. Pathogenic micro-organisms may be hazardous at extremely low concentrations, and of course biological agents are not visible to the naked eye. Even if no biological agent is detected, it is possible for micro-organisms to provoke a toxic or allergic effect via their metabolites (mycotoxins or their component endotoxins). Unlike other dangerous substances, biological agents are able to reproduce. Under favourable conditions, a small number of micro-organisms may multiply in a very short time to create a considerable problem.

Source : http://osha.europa.eu/en/publications/e-facts/efact53

Health surveillance in silica exposed workers

There is uncertainty in Great Britain (GB) about what constitutes appropriate health surveillance for silica-exposed workers, despite evidence that new cases of silicosis are occurring.
The main objectives of this report are:
1) To identify existing recommendations for health surveillance for silica-exposed workers.
2) To assess the evidence base for these recommendations and other relevant evidence in the scientific literature.
3) To make recommendations for a standard.

Source : http://news.hse.gov.uk/2010/11/15/rr827-health-surveillance-in-silica-exposed-workers/

Work exposure to diesel fumes tied to lung cancer

The study has a number of key limitations, one being a lack of data on the subjects' actual exposure to diesel exhaust. Moreover, case-control studies can offer only limited evidence of an association between two variables (in this case, diesel-exhaust exposure and lung cancer risk). And they cannot establish the extent to which diesel exhaust might affect any one worker's absolute risk of developing lung cancer.
Studies that follow a population of initially healthy people over time offer stronger evidence of whether a particular exposure is related to a disease risk.
Straif noted that results from a long-term U.S. government study of diesel-exhaust exposure and lung cancer among miners are expected to be released soon.
He said that study "will be very influential for the overall assessment of the carcinogenicity of diesel motor exhaust."

Source : http://www.reuters.com/article/idUSTRE6A858X20101109?pageNumber=2

Evaluation of Exposures to Tuberculosis Among Immigration Employees

The HHE Program evaluated immigration and customs enforcement agents' potential for transmission of tuberculosis (TB). Investigators found that most employees had direct contact with detainees every day and participated in job activities that place them at risk of acquiring TB infection. Investigators recommended that ventilation systems in detainee areas be changed to either a single-pass or a high-efficiency particulate air-filtered system and that ventilation systems be rebalanced to increase the amount and direction of air flow in detainee areas. Investigators also recommended annual TB training and testing for all employees.

Source : http://www.cdc.gov/niosh/hhe/reports/pdfs/2009-0074-0193-3114.pdf

Encres et vernis d'impression

Composition, risques toxicologiques et mesures de prévention
des encres et vernis d'impression (liants, solvants, pigments, charges, additifs, ...). Sont exposés les risques propres à chacun des composants et les textes réglementaires correspondants. Puis sont présentées les mesures de prévention technique à mettre en oeuvre lors de la fabrication et de l'application de ces produits, l'information à donner à l'utilisateur sur les dangers de ces produits, la formation à dispenser au personnel et la surveillance médicale des travailleurs.

Source : http://www.inrs.fr/inrs-pub/inrs01.nsf/IntranetObject-accesParIntranetID/OM:Document:4BAE528D03B3D2FCC12577D100536475/$FILE/Visu.html

Skin and Respiratory Symptoms in Peanut Inspectors with Peanut Dust and Endotoxin Exposure

The HHE Program evaluated employees' exposures in a peanut-grading operation. Investigators found endotoxin in air conditioner filter dust, peanut grading room air, and outdoor air. Peanut grading machines were found to be releasing dust indoors. Investigators recommended that peanut grading room dust be vented outdoors and that air conditioner filters be changed routinely. It was also recommended that employees be provided with NIOSH-approved N95 respirators and participate in a respiratory protection program.

Source : http://www.cdc.gov/niosh/hhe/reports/pdfs/2008-0052-3115.pdf

Un outil pour modéliser les expositions aux produits chimiques

IHMOD est une feuille de calcul Excel qui regroupe différents modèles présentés dans l'ouvrage de référence « Mathematical models for estimating occupational exposure to chemicals ».
Cet ouvrage permet de sélectionner le modèle le plus adéquat, les paramètres appropriés, de comprendre les limites de chaque modèle, et explique ce que signifient les résultats des calculs.
Il constitue une référence incontournable pour les questions techniques sur les modèles et l'utilisation de ces modèles.
Il aide à résoudre des problèmes du type « Comment puis-je déterminer le taux d'émission ? » ou « Quel modèle devrais-je utiliser en premier ? » ou « Où puis-je trouver des valeurs du coefficient de diffusion turbulente ? ».

Source : http://www.inrs.fr/actus/IHMOD.html

NIOSH Posts New Database Resource on Rates, Trends in Elevated Blood Lead Levels

The National Institute for Occupational Safety and Health (NIOSH) posted a new interactive, Web-based resource to help users identify, monitor, and address harmful overexposures to lead. The web page provides data on cases of elevated levels of lead in the blood of adults, and trends in those cases over time. It also allows users – particularly occupational and environmental health professionals and researchers – to create customized data products from those data.

Source : http://www.cdc.gov/niosh/updates/upd-11-03-10.html

Agir pour la prévention des cancers professionnels

Les cancers d'origine professionnelle constituent un problème de santé publique majeur : chaque année, les cas reconnus se comptent en milliers et les cas attribuables en dizaine de milliers, voire beaucoup plus. En effet, on sait que 150 000 décès par cancer de l'amiante sont attendus d'ici 2025 (dont environ 95 % sont d'origine professionnelle).
Certaines entreprises prennent conscience de l'importance de ces risques et mettent en oeuvre des démarches de prévention adaptées. Parallèlement, les prérogatives du CHSCT se sont renforcées et la place de la santé au travail a pris une dimension importante dans l'entreprise. Tout semble donc réuni pour mobiliser les acteurs de la prévention et permettre la mise en oeuvre d'un haut niveau de prévention des risques chimiques et des risques cancérogènes.
Ce guide est issu des expériences respectives de Secafi et du Giscop. Il vise à fournir aux représentants du personnel des informations pour leur permettre d'appréhender les enjeux et l'importance d'une mobilisation du CHSCT, mais aussi et surtout des pistes concrètes pour agir sur la prévention des cancers professionnels dans leur entreprise.

Source : http://www.anact.fr/web/publications/NOTINMENU_affichage_document?p_thingIdToShow=13403566

Comparison of Mold Exposures Between Employees at a Severely Water-Damaged School and Employees at a School Without Significant Water Damage

The HHE Program evaluated a severely water-damaged school where employees reported difficulty breathing, chronic sinusitis, and immune system problems. As a comparison for the evaluation, investigators also evaluated a school around the same age that had no history of water damage or mold contamination. Investigators found that employees at the severely water-damaged school had a significantly higher prevalence of symptoms than employees at the comparison school.

Source : http://www.cdc.gov/niosh/hhe/reports/pdfs/2005-0135-3116.pdf

Polyneuropathy or encephalopathy caused by organic solvents, in isolation or in mixtures

The second edition of the Occupational Diseases Report 1317 enables quality-assured processing in cases with a suspicion of work-induced damage to the nervous system by organic solvents on the basis of technical and medical expert knowledge.
In the first part, there is technical information with specific information on solvents and mixtures whose neuro-toxicity has been proved according to the current level of knowledge. The Report contains overviews on the incidence of the substances in various industries as well as substance dossiers with chemical and physical data, limit values and absorption paths. In individual cases, this information should support the necessary investigations on the nature and extent of possible damaging effects and allow an overall technical evaluation for work. The second focus of the Report is on the recommendations for assessment drawn up by experts from various disciplines with extensive experience in observation, treating and assessing the relevant diseases. In the Annex there is additional information in the form of evaluating summaries of literature data on the neuro-toxic effect threshold of individual substances and mixtures.

Source : http://www.dguv.de/ifa/en/pub/rep/rep07/bk0207/index.jsp

Toxic Metals Tied to Work in Prisons

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 to toxic elements.

Source : http://www.nytimes.com/2010/10/27/science/earth/27waste.html?_r=2

Rapport : http://www.justice.gov/oig/reports/BOP/o1010.pdf

Ultrafine Particle Exposure During Fire Suppression

Is It an Important Contributory Factor for Coronary Heart Disease in Firefighters?
Coronary heart disease (CHD) is the primary cause of death among US firefighters during fire suppression. In other populations, exposure to respirable particles, including ultrafine particles, has been widely implicated as a risk factor for CHD. This study is the first to report detailed characterization of respirable particles released by combustion of an automobile and model residential structures under firefighter exposure conditions.

Journal of Occupational and Environmental Medicine, 2010, vol. 52, n° 8, p. 791-796.

Source : http://journals.lww.com/joem/Abstract/2010/08000/Ultrafine_Particle_Exposure_During_Fire.3.aspx

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