industrial pollutants have a harmful effect on humans: gases are toxic, irritating, corrosive, can even suffocate; the dust is toxic, fibrotic or pathogenic and can overload the lungs. Operators exposed to aerosols or pollutants risk developing occupational diseases such as skin disorders, poisoning; Rhinitis, Asthma, cancer…
The European Union defined a concept of Exposure Limit Value for the different aerosols in Directive 98/24 / EC dated April 7, 1998. For example, the Average Exposure Value for dust without specific effects is fixed 10 mg / m3 for the inhalable fraction and 5 mg / m3 for the alveolar fraction; the asbestos fiber concentration must not exceed 10 fibers per liter of air sucked in over a period of 8 hours, certain chemical compounds are limited to a few µg / m-3… Some aerosols are also classified CMR – Carcinogenic Mutagenic Reprotoxic, and the exhibition of Man is very framed. The Nuclear Safety Authority (ASN) also sets a maximum exposure to radioactive substances of 20 mS / year
WATTOHM acts to limit the exposure of women and men to chemical agents, by sucking pollutants at the source or by implementing general ventilation of buildings aimed at limiting concentration.
Protection of the working environment
Pollutants emitted during manufacturing operations disperse in the working environment and settle or condense on machines, floors, frames of industrial buildings. Dust can impair the functioning of electronic sensors, aerosols soil the floors and make them slippery, hydrocarbons deteriorate roof waterproofing systems … Heat and dust also harm electrical and electronic components, they sometimes lead to breakdowns untimely random events that decrease productivity.
Certain gases and fine dusts also have an explosive character, more or less important (Kst, Pmax, EMI, classification of gases…). Under certain conditions (LEL, LES, confined space, etc.), explosive atmospheres (ATEX) can form and cause human and material damage (ruptured eardrum, serious damage to the ears, lungs, projections, etc.), sometimes fatal.
Link to the CARATEX database: https://staubex.ifa.dguv.de/?lang=f
WATTOHM works on industrial sites on several levels. We set up ventilation devices aiming to limit the concentration to values much lower than the LEL to downgrade ATEX zones (example: Centralized cleaning, ventilation controlled by a process). WATTOHM designs and produces ATEX installations according to Directive 2014/34 / EU which have two objectives: ventilation and sanitation of workplaces limit ATEX risks by influencing one of the 6 criteria of an explosion; WATTOHM implements certified safety devices to limit the impact on humans and the environment if necessary.
Like concentrations at workstations, atmospheric emissions are standardized and regularly checked by DREAL in France, by private organizations and international control offices
For example, the ministerial decree of February 2, 1988 fixes a limit value of concentration of 40 mg / m3 in dust; the permissible concentration for fluorinated elements is 5 mg / m3; the concentration limit value for asbestos is 1 mg / m3; the mercury emission limit value in the steel industry is 0.5 mg / m3. (see full texts on the aida.ineris.fr website)
WATTOHM intervenes, designs and builds installations in accordance with the regulations in force, depending on the type of pollutant, the classification of the site, etc. This conformity is checked by an authorized body during the reception phase of the installation.