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1 year ago

KEIM Teknosil

  • Text
  • Asbestos
  • Cement
  • Panels
  • Coating
  • Fibre
  • Fibres
  • Teknosil
  • Keim
  • Hazardous
  • Materials

Recognizing asbestos

Recognizing asbestos cement Only as of 1991 guaranteed asbestos-free Asbestos is not really visible. A definite determination is only possible under the electron microscope. However, a help would be, to know how old the panels are meaning, in which year they were manufactured. In principle, asbestos has to be expected in Germany to be part of fibre cement boards built before 1991. But it needs to be mentioned that starting in the 1980’s also panels with substitute fibres were used. Panels used before 1983 contain probably asbestos fibres and from the year 1991 and later (production and installation in Germany) they are classified as asbestos-free. Particular caution must be taken for boards installed between 1983 and 1991. Poorly bound asbestos products Strongly bound asbestos products Fibre content > 50 % Bulk density < 1,000 kg/m 3 Fibre content < 15 % Bulk density > 1,400 kg/m 3 Typical application Soft asbestos Spray asbestos Asbestos-containing lightweigt mortar or lightweight panels Asbestos mats or cords Floor coverings with a paper felt-like asbestos underlay (CV-coverings) Air ventilation ducts Fire dampers and fillings in fire protection doors Protection curtains Pipe clamp inlays Typical application Panels, claddings, pipes or moulded parts made from asbestos cement for: Roofing Facade claddings Ventilation pipes and exhaust stacks Garden articles like flower boxes 5 5 Reference: BGBau, Medien, Asbestos (BG BAU= German trade association for the construction industry) 4

What has to be considered? Despite a ban of use, asbestos fibre cement panels do not have necessarily to be removed. The fibres are not dangerous as long as they are not exposed. Only exposure and the danger of inhalation cause the health risk. Any contact with asbestos-containing materials requires a high degree of protective measures which are stipulated in the following laws and instructions: German Hazardous Substances Ordinance (GefStoffV), particularly the “German Technical Regulations for Hazardous Substances, TRGS 519” German Water Resources Act (WHG) Accident Prevention Regulations (UVV) The Hazardous Substances Ordinance restricts the so-called DRM-works (demolition, redevelopment and maintenance) in a way that cleaning and renovation works with uncoated asbestos cement roofs and wall claddings are generally prohibited. 6 A whole series of conditions according to the German Technical Regulations for Hazardous Substances, (TRGS 519) is connected for DRM-works (demolition, redevelopment and maintenance) with uncoated asbestos cement panels which have to be strictly observed. These conditions are for example a certificate regarding the contact with asbestos and the associated risks (so-called certificate of knowledge) and also proof that the performing workshop has the corresponding equipment. Moreover, if dimensions are greater than 100 m² the proper authorities must be informed in time, i.e. at least seven days before the beginning of work, so that possible objections could be done. This notification entails a whole series of information. For works up to 100 m² the workshop has to notify the authorities that he generally performs such activities. Orders less than 100 m² do not need to be reported in individual cases. Plus, a general employment prohibition is applied for pregnant women and young people. Only a competent, qualified workshop with well-trained employees combined with highest processing and product quality provides sufficient security for humans and environment and protects the craftsmen from unpredictable risks. Expertise is imperative 6 Compare: Annex II to article 16 (2) of the regulation recasting the Hazardous Substances Ordinance dated November 26, 2010. 5