Asbestos is a naturally occurring mineral that was widely used in the construction industry due to its strength and resistance to heat. However, it has been linked with severe health issues, including lung cancer and mesothelioma, leading to its ban in many countries. Despite this, many older buildings still contain asbestos within their structures. As such, professional asbestos testing is crucial when renovating or demolishing these buildings to ensure the safety of all individuals involved.
The process of professional asbestos testing involves several meticulous steps carried out by certified professionals using state-of-the-art equipment adhering strictly to safety guidelines. The initial stage entails a comprehensive visual inspection of the property where suspected materials are identified based on their age, appearance and location.
Following identification, the next step involves sample collection. This must be executed meticulously as disturbance can release harmful asbestos fibres into the air which can be inhaled causing health complications. Professionals wear personal protective equipment (PPE) including respirators and gloves while wetting materials before sampling to minimize fibre release. It’s important that only trained professionals perform this task due to potential exposure risks.
Once samples have been collected safely they are sealed in air-tight containers and sent off for laboratory analysis under controlled conditions. There are two main methods used for analysing these samples: Polarized Light Microscopy (PLM) and Transmission Electron Microscopy (TEM). PLM identifies asbestos by examining fiber morphology and color under polarized light while TEM uses electron beams allowing for more precise measurement of fibre dimensions.
Laboratory results will indicate whether or not asbestos is present along with its type – Chrysotile, Amosite or Crocidolite – each having different levels of risk associated with them. Results usually take about one week but can be expedited if necessary at an additional cost.
In case asbestos is detected during testing it’s imperative that appropriate measures are taken immediately for removal or containment depending on its condition – intact material can sometimes be safely managed in place while damaged material typically requires removal. This should only be performed by licensed abatement professionals to ensure complete and safe elimination of the hazardous substance.
Post-abatement, clearance testing is conducted to verify that all asbestos has been effectively removed or contained, and the area is safe for reoccupation. This involves visual inspection followed by air sampling using aggressive techniques which disturb air to dislodge any remaining fibres. Samples are then analysed using TEM to ensure fibre concentrations are below acceptable levels.
In conclusion, professional asbestos testing is a complex process requiring specialized knowledge and skills, stringent safety measures and sophisticated equipment. It plays an indispensable role in ensuring our homes, workplaces and public buildings remain safe spaces devoid of this harmful substance. Despite its complexity and cost, it’s a small price to pay for the health and safety of occupants and workers alike.