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Mewes D.,Institute For Arbeitsschutz Der Deutschen Gesetzlichen Unfallversicherung Ifa | Mewes O.,Institute For Arbeitsschutz Der Deutschen Gesetzlichen Unfallversicherung Ifa | Herbst P.,Berufsgenossenschaft Holz und Metall
International Journal of Occupational Safety and Ergonomics | Year: 2011

Guards on machine tools are meant to protect persons from injuries caused by parts ejected with high kinetic energy from the machine's working zone. With respect to stationary grinding machines, Standard No. EN 13218:2002, therefore, specifies minimum wall thicknesses for guards. These values are mainly based on estimations and experience instead of systematic experimental investigations. This paper shows to what extent simple impact tests with standardizable projectiles can be used as basis for the evaluation of the impact resistance of guards, provided that not only the kinetic energy of the projectiles used but also, among others, their geometry corresponds to the abrasive product fragments to be expected.

Weiss T.,Ruhr University Bochum | Pesch B.,Ruhr University Bochum | Lotz A.,Ruhr University Bochum | Gutwinski E.,Ruhr University Bochum | And 10 more authors.
International Journal of Hygiene and Environmental Health | Year: 2013

The objective of this analysis was to investigate levels and determinants of exposure to airborne and urinary chromium (Cr, CrU) and nickel (Ni, NiU) among 241 welders. Respirable and inhalable welding fume was collected during a shift, and the metal content was determined using inductively coupled plasma mass spectrometry. In post-shift urine, CrU and NiU were measured by means of graphite furnace atom absorption spectrometry, with resulting concentrations varying across a wide range. Due to a large fraction below the limits of quantitation we applied multiple imputations to the log-transformed exposure variables for the analysis of the data. Respirable Cr and Ni were about half of the concentrations of inhalable Cr and Ni, respectively. CrU and NiU were determined with medians of 1.2μg/L (interquartile range <1.00; 3.61) and 2.9μg/L (interquartile range <1.50; 5.97). Furthermore, Cr and Ni correlated in respirable welding fume (r=0.79, 95% CI 0.74-0.85) and urine (r=0.55, 95% CI 0.44-0.65). Regression models identified exposure-modulating variables in form of multiplicative factors and revealed slightly better model fits for Cr (R2 respirable Cr 48%, CrU 55%) than for Ni (R2 respirable Ni 42%, NiU 38%). The air concentrations were mainly predicted by the metal content in electrodes or base material in addition to the welding technique. Respirable Cr and Ni were good predictors for CrU and NiU, respectively. Exposure was higher when welding was performed in confined spaces or with inefficient ventilation, and lower in urine when respirators were used. In conclusion, statistical modelling allowed the evaluation of determinants of internal and external exposure to Cr and Ni in welders. Welding parameters were stronger predictors than workplace conditions. Airborne exposure was lowest inside respirators with supply of purified air. © 2012 Elsevier GmbH.

Background: The benchmark paper of 25 February 2008 and the guideline of 13 September 2010 provide the principles for rehabilitation management (RM) under the German Social Accident Insurance (DGUV) in the DGUV's version of 17 July 2014. Objective: A precise diagnosis and the accident insurer's knowledge of contextual factors influencing the healing process require the timely introduction of RM. Rehabilitation management presents the accident insurer with new challenges. Methods: A rethink by the official authorities regarding customer-oriented service providers is required, which is linked to new demands being made on staff. In addition to the necessary legal knowledge, social competence, communication skills, and medical knowledge are now required. The increased costs incurred by the personal contact required can only be offset by an efficient adminstrative structure and effective data handling. Results: The results of pretesting of the customer survey planned for 2015 show the participants' high level of satisfaction with RM and the rehabilitation managers. Our own analyses of the Wood and Metal Trade Association, in addition to the results of the DGUV's bench mark project “Efficiency of Case Management,” show that the RM “pays off.” With expenditure on outpatient and inpatient treatment, which in real terms decreased slightly, periods of sick leave were shortened, invalidity benefit savings were made, and the number of new pensions was reduced. Conclusion: The requirements of the DGUV's new treatment permit better collaboration between doctors and rehabilitation managers of the accident insurers. Case selection fo RM should be investigated. The principles of RM should be transferred to the processing of cases of work-related illness. Important results on the improvement of RM are expected from the customer survey starting in 2015. © 2015, Springer-Verlag Berlin Heidelberg.

Skudlik C.,University of Osnabruck | Romer W.,Berufsgenossenschaft Holz und Metall | Brandenburg S.,Berufsgenossenschaft fur Gesundheitsdienst und Wohlfahrtspflege | John S.M.,University of Osnabruck
Dermatologie in Beruf und Umwelt | Year: 2012

According to German law, severe Hymenoptera-sting allergy, acquired at the workplace, may be covered for by the statutory accident insurance under certain conditions. Depending on the circumstances of the condition it can legally either be regarded as an occupational accident or as an occupational disease. If the accident insurance is the responsible social insurance body, which will particularly be the case if e.g. beekeepers, farmers, forest workers, bakery vendors suffer from severe Hymenoptera-sting allergy, the immediate treatment as well as the long-term treatment (e.g. specific immunotherapy) and - if applicable - compensation has to be provided according to the German law (Sozialgesetzbuch VII (State Insurance Code 7), Berufskrankheitenverordnung (Decree on Occupational Diseases)) by the statutory accident insurance. © 2012 Dustri-Verlag Dr. Karl Feistle.

Breuer D.,Institute For Arbeitsschutz Der Deutschen | Ngazi R.,Institute For Arbeitsschutz Der Deutschen | Van Gelder R.,Institute For Arbeitsschutz Der Deutschen | Gabriel S.,Institute For Arbeitsschutz Der Deutschen | And 9 more authors.
Gefahrstoffe Reinhaltung der Luft | Year: 2015

Workplaces are still encountered at which a potential risk of benzene exposure exists, particularly in areas associated with the supply of petrol and other spark-ignition engine fuels to the population. A newly developed sensitive measurement method was used to measure the observance of the acceptable and tolerable concentrations of benzene during the filling of tanker vehicles, in the indoor and outdoor areas of filling stations, during maintenance work on motor vehicles, and in landscaping work involving petrol-engined equipment. The current acceptable concentration of 0.2 mg/cu m was observed at filling stations. The current acceptable concentration was also observed in the landscaping sector.

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