![]() Installation, connection and operation of the asphalt analyzer and other equipment are to be carried out according to the specifications in the operating instructions of the system’s manufacturer. ![]() If several installations are operated within one fume cabinet, then this fume cabinet must be fitted with sufficient slides, so that only one part of the front needs to be opened to access the relevant device.Performance of ancillary work with Trichloroethylene can lead to additional exposure and thus can increase background pollution and is therefore not permitted according to these rules.Containers with fresh as well as used Trichloroethylene must be stored in accordance to the specifications of TRGS 510 “Storage of hazardous substances in non-stationary containers“.In addition to the asphalt analyzer and the rotary evaporator, this also includes the bitumen washing machine and the dry box. Performance of all operations and processes for Trichloroethylene within fume cabinets, which comply with the requirements of DIN EN 14175-2, or within comparable technical installations, which have been tested for their effectiveness.Operation of the asphalt laboratory according to the requirements of the TRGS (Technical Rule for Hazardous Substances) 526 “Laboratories“.Our publication ‘ Arbeitsplatzbelastungen durch Trichlorethen in der Asphaltanalytik bei Umsetzung des Stands der Technik‘ summarizes the necessary RMMs as shown below to efficiently protect workers in asphalt laboratories from the hazards of Trichloroethylene. Until then, employers have to protect their workers in asphalt laboratories from Trichloroethylene fumes with measures beyond the RMMs described by the applicant. This authorization will expire on 21st April 2023. The current authorization (REACH/18/9/4) grants its use by downstream users in specific circumstances as an extraction solvent in asphalt analysis only as described in the application by the supplier. Even though these machines are closed loop systems, there are many steps during the whole procedure from loading the asphalt sample into the washing chamber of the asphalt analyzer up to the recovery of the bitumen by rotary evaporation in which workers can be exposed to Trichloroethylene, particularly via inhalation.ĭue to its carcinogenic, mutagenic, nephrotoxic and neurotoxic nature, Trichloroethylene is a substance of very high concern listed in REACH’s Authorization List (Annex XIV). Bitumen extractions are performed in so-called asphalt analyzers. In Germany, Trichloroethylene is still officially required in asphalt testing. As a dry cleaning agent, the less hazardous Tetrachloroethylene replaced its structural analog as early as the 1950s. ![]() Trichloroethylene (TCE, TRI) is a colorless, non-flammable but carcinogenic halocarbon widely used as an effective industrial solvent for organic materials such as oil, grease and bitumen. In 2017, further measurements were performed in eight additional selected companies in order to show how good handling of RMMs can reduce Trichloroethylene exposures to a minimum of 1.3 mg/m³ (8h-TWA, 95th percentile). It became apparent that the majority of companies did not fully exploit the possible technical and organizational measures and thus, they did not satisfy all requirements of the German Hazardous Substances Ordinance (GefStoffV). In 20, the state of Hesse, Germany, measured the exposure to Trichloroethylene among workers in asphalt laboratories and evaluated the RMMs (risk management measures) of 14 Hessian companies. ![]()
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