2010-02-01 12:00 - Messages

Hazards of liquid hydrogen

In the long term the key to the development of a hydrogen economy is a full infrastructure to support it, which include means for the delivery and storage of hydrogen at the point of use, eg at hydrogen refuelling stations for vehicles. In the meantime as an interim measure to allow the development of refuelling stations and rapid implementation of hydrogen distribution to them, liquid hydrogen (LH2) is considered the most efficient and cost effective means for transport and storage. This will result in increasing amounts of LH2 transported by road, and possibly by rail, and storage of moderately large quantities at refuelling stations, many of which will be in urban areas. Although cryogenic liquid storage has been used safely for many years in secure and regulated industrial sites, its use in relatively congested, highly populated urban areas presents a new set of issues in relation to security, safety and associated planning. The Health and Safety Executive commissioned the Health and Safety Laboratory to identify and address issues relating to bulk liquid hydrogen transport and storage and update/develop guidance for such facilities. This position paper, the first part of the project, assesses the features of the transport and storage aspects of the refuelling stations that are now being constructed in the UK, compares them to existing guidance, highlights gaps in the regulatory regime and identifies outstanding safety issues.

Source : http://www.hse.gov.uk/research/rrhtm/rr769.htm

Fire and explosion properties of nanopowders

The Health and Safety Executive commissioned this project to investigate the potential fire and explosion hazards associated with nanopowders. Test equipment and procedures were developed to assess the key properties of a selected number of nanopowders.

Source : http://news.hse.gov.uk/2010/02/23/rr782-fire-and-explosion-properties-of-nanopowders/?rss=Research

Asbestos Exposure and Compliance Study of Construction and Maintenance Workers

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 and control of asbestos are followed. To date, little research has been undertaken on these tradespersons and their awareness and compliance with OHS regulations relating to asbestos.

Source : http://www.safeworkaustralia.gov.au/swa/aboutus/publications/asbestosexposureandcompliancestudyofconstructionandmaintenanceworkers.htm

Spotlight on cobalt

The US National Institute for Occupational Safety and Health (NIOSH) has recently added a new page about cobalt to its website (http://www.cdc.gov/niosh/topics/cobalt/). Cobalt is an essential element being part of vitamin B12, necessary for neurological function, brain function, and the formation of blood but it is also extremely toxic. It is used in various metal alloys, magnets, cutting and grinding tools, pigments, paints, coloured glass, surgical implants, catalysts, batteries and metal coatings. The radioactive isotopes of cobalt are used in medicine, food irradiation, and in the measurement of concrete density and weld integrity. Exposure to cobalt can arise during alloy production and processing, the use of cobalt in other industries such as glass making and while cutting and grinding using hard metal abrasives.

Source : http://www.iom-world.org/news/cobalt.php

Air des lieux de travail

Lignes directrices pour le mesurage de la fraction alvéolaire de la silice critalline
La présente Norme internationale fournit des lignes directrices relatives à l'assurance qualité des mesurages de la silice cristalline alvéolaire dans l'air en utilisant une méthode directe sur filtre ou des méthodes indirectes d'analyse par diffraction de rayons X et infrarouge. Le domaine d'application de la présente Norme internationale inclut les polymorphes de silice cristalline suivants: quartz, cristobalite et tridymite.Ces lignes directrices sont également appropriées à l'analyse des filtres obtenus à partir des mesurages du pouvoir de resuspension conformément à l'EN 15051.

Source : http://www.boutique.afnor.org/NEL5DetailNormeEnLigne.aspx?&nivCtx=NELZNELZ1A10A101&ts=9732113&CLE_ART=FA153180&rub=NouveauteNorme

Nanoparticle emission assessment technique (NEAT) for the identification and measurement of potential inhalation exposure to engineered nanomaterials

There are currently no exposure limits specific to engineered nanomaterial nor any national or international consensus standards on measurement techniques for nanomaterials in the workplace. However, facilities engaged in the production and use of engineered nanomaterials have expressed an interest in learning whether the potential for worker exposure exists. To assist with answering this question, the National Institute for Occupational Safety and Health established a nanotechnology field research team whose primary goal was to visit facilities and evaluate the potential for release of nanomaterials and worker exposure. The team identified numerous techniques to measure airborne nanomaterials with respect to particle size, mass, surface area, number concentration, and composition. However, some of these techniques lack specificity and field portability and are difficult to use and expensive when applied to routine exposure assessment. This article describes the nanoparticle emission assessment technique (NEAT) that uses a combination of measurement techniques and instruments to assess potential inhalation exposures in facilities that handle or produce engineered nanomaterials. The NEAT utilizes portable direct-reading instrumentation supplemented by a pair of filter-based air samples (source-specific and personal breathing zone). The use of the filter-based samples are crucial for identification purposes because particle counters are generally insensitive to particle source or composition and make it difficult to differentiate between incidental and process-related nanomaterials using number concentration alone. Results from using the NEAT at 12 facilities are presented in the companion article (Part B) in this issue.

Source : http://www.nanotech-now.com/news.cgi?story_id=36309

Feasibility of storybuilder software tool for major hazards intelligence

The aim of this research was to investigate the feasibility of using the software tool Storybuilder version 2.0.34 (2008), developed by the Workgroup Occupational Risk Model (WORM) project in the Netherlands, for recording and analysing major hazards loss of containment (LOC) incident data as a tool to better understand how accidents happen and where prevention efforts should be focused. The ultimate aim of the project is to determine if Storybuilder can provide enhanced intelligence about major accident hazards and therefore allow better targeting of HSE intervention resources.

Source : http://www.hse.gov.uk/research/rrhtm/rr778.htm

National Hazard Exposure Worker Surveillance - Sunlight Report

This report focuses on the exposure of Australian workers to direct sunlight and the control measures that are provided in workplaces that eliminate, reduce or control worker exposure to direct sunlight. The aims of this report are as follows: to describe patterns of exposure to direct sunlight in conjunction with patterns of direct sunlight control provision with respect to industry, occupation and other relevant demographic and employment variables, and; to make recommendations, where possible, for the development of OHS and workers' compensation policy.

Source : http://www.safeworkaustralia.gov.au/NR/rdonlyres/D4C4EFE5-0433-45FC-818F-0689AD7D7C0A/0/NationalHazardExposureWorkerSurveillancesunlight.pdf

L'amiante dans les opérations de réhabilitation et de démolition

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 de contrôle de la fiabilité des rapports de repérages amiante. Les résultats sont particulièrement inquiétants puisque l'absence, l'inadaptation ou la mauvaise qualité des repérages ont été mises en évidence dans 70 à 80 % des cas. Ils confirment que le repérage amiante constitue actuellement le maillon le plus faible de la chaîne de traitement de l'amiante en place. Dans cette première partie sont présentés les différents repérages amiante et leur adaptation aux opérations de réhabilitation et de démolition.
L'article revient ensuite sur l'étude statistique menée en 2005 et 2006 dans le département de La Manche, laquelle est illustrée d'exemples concrets. Un deuxième article à venir traitera plus spécifiquement des obligations des différents acteurs des opérations de réhabilitation et de démolition et de l'étude des causes de l'insuffisance de certains repérages.

Source : http://www.inrs.fr/publications/nd2311.html

L'amiante dans les opérations de réhabilitation et de démolition

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 mène depuis 2005 une campagne ciblée de contrôle de la fiabilité des rapports de repérages amiante. Les résultats de ces contrôles sont particulièrement inquiétants puisque l'absence, l'inadaptation ou la mauvaise qualité des repérages ont été mises en évidence dans 70 à 80 % des cas. Ils confirment que le repérage amiante constitue actuellement le maillon le plus faible de la chaîne de traitement de l'amiante en place.
Faisant suite à l'article ND 2311 qui traitait des différents types de repérage amiante et de leur adaptation aux opérations de réhabilitation et de démolition, ce second article présente les obligations des différents acteurs de ces opérations (maîtres d'ouvrage, maîtres d'oeuvre, coordonnateurs Sécurité et de Protection de la Santé, responsables d'entreprise, opérateurs de repérage). Les résultats de plusieurs enquêtes menées par l'inspection du travail sont présentés. Ils permettent de mieux comprendre l'influence parfois néfaste de ces acteurs sur la qualité des repérages et confirment que seul un engagement sans faille de leur part dans la démarche de prévention des risques professionnels et une volonté de respecter la réglementation peuvent permettre d'aboutir à un repérage exhaustif, donc fiable.

Source : http://www.inrs.fr/publications/nd2316.html

Asbestos: The survey guide

This heavily illustrated publication replaces and expands on MDHS100, surveying, sampling and assessment of asbestos-containing materials. It is aimed at people carrying out asbestos surveys and people with specific responsibilities for managing asbestos in non-domestic premises under the Control of Asbestos Regulations 2006. The book covers competence and quality assurance and surveys, including: survey planning, carrying out surveys, the survey report and the dutyholder's use of the survey information. It includes extensive appendices and references and it complements and supports other guidance on managing asbestos. Contents: Introduction; Competence and quality assurance procedures; Asbestos surveys; Survey planning; Carrying out the survey; Survey report; Dutyholder's use of survey information; Appendix 1-8.

Source : http://books.hse.gov.uk/hse/public/saleproduct.jsf?catalogueCode=9780717663859

GESTIS - International limit values for chemical agents

GESTIS database International Limit Values for Chemical Substances was updated in January 2010. Limit values of NIOSH are now included in the datapool.

Source : http://www.dguv.de/ifa/en/gestis/limit_values/index.jsp

L’INERIS lance son nouveau portail substances chimiques

Depuis 2003, l'Ineris anime un espace ouvert à tous les publics, qui présente l'expertise acquise par ses ingénieurs sur les substances chimiques. Le portail www.ineris.fr/substances/fr/ fait aujourd'hui peau neuve avec de nouvelles fonctionnalités : insertion des fiches de données technico-économiques, interopérabilité avec le site du Registre français des émissions polluantes…

Source : http://www.oppbtp.fr/actualites/en_bref/l_ineris_lance_son_nouveau_portail_substances_chimiques

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