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WHAT IS A RESPIRATORY PROTECTIVE MASK / DUST MASK?
Respiratory Protective Masks are generally divided into two groups. Dust and Gas Masks. Gas masks are grouped as half face, full face and escape masks.
There are various groupings such as motorized air-fed systems and rescue masks in full face masks. Here we will focus on dust masks / respirators. In technical terms, dust masks are respiratory protective devices designed to protect against solid and liquid aeroceles / particles, which cover the mouth, nose and chin and are mostly composed of filter material.
With a second definition, MFA dust masks comply with the relevant standards (EN 149: 2001 + A1 2009) to help us protect against particles / particles and pollutants that cause "occupational lung diseases" and are dangerous for human health, namely "respirable dust". describes as "Respiratory Protective Equipment", which is produced and designed to filter respirable dusts.
Explanations on the features that dust masks should have are as follows.
WHAT IS A RESPIRATORY PROTECTIVE MASK / DUST MASK?
RESPIRATORY PROTECTION DEVICES / MASKS FOR PROTECTION AGAINST PARTICLES (DUST MASKS)
European Union Standard in force in our country regarding dust masks is EN 149: 2001 + A1: 2009. This standard sets out the minimum performance limits of Dust Masks designed to help protect people from respiratory occupational diseases. It was first published as EN 149 and became EN 149: 2001 with the changes and additions made in 2001. The new version, which was announced in July 2009 and entered into force in July 2010, has taken the form of EN 149: 2001 + A1: 2009. At present (2017) in Turkey and the European Union countries masks with yürürlüktedir.2009 revision of NR (single-shift and R (used more than once) are categorized as.
Masks FFP1-FFP2-FFP3 have a three class levels of protection to be. FFP1-FFP2- What is FFP3? The masks produced according to the standard provide protection in 3 categories according to their filters: These are FFP1-FFP2 and FFP3. Non-toxic dusts (coarse dusts arising from cleaning etc.) Toxic (toxic) fine dusts, fumes and vapors with P2-MAK values greater than 0.1 mg / m3 and between 0.1 mg / m3 - 5 mg / m3 ( sample cotton dust, silica, many metal powders) Toxic (toxic), radioactive, carcinogenic fine powders with a P3-MAK value less than 0.1 mg / m3. (e.g. asbestos, cobalt metal and dust, nickel, chromium, silver, platinum) salts, tin compounds) MAC = MAK (Maximum Permissible Concentration) Various chemistry The maximum amount of materials that are allowed to be in the closed workplace air and that will not harm the health of those who will work there for 8 hours a day is called the MAK value.
MAK value indicates the level-limit-limit that the chemical agent should never exceed in the environment. It is the maximum concentration of chemicals that are allowed to be in a closed workplace for 8 hours a day and 45 hours a week, and that will not harm the health of employees throughout the day.
There is no MAK value for carcinogenic (cancer causing) substances. The MAK concept is mostly used for chemicals that have toxic (toxic) effects. It is assumed that "Acute Toxic Symptoms" will occur if the MAK level is exceeded. * If there is gas, smoke, etc. caused by iron, steel, soldering, casting, etc. in the environment, then it is necessary to use active carbon masks. (Read the explanations about active carbon masks below) Regarding the dust measurement results; FFP1 Masks up to 4 times the threshold limit value of the pollutant in the environment (APF-Assigned Protection Factor 4 X OEL - NPF-Nominal Protection Factor 4 X OEL), FFP2 Masks up to 10 times the threshold limit value of the pollutant in the environment (APF-Assigned Protection Factor 10 X OEL - NPF-Nominal Protection Factor 12 X OEL), FFP3 Masks provide protection up to 20 times the threshold limit value of the pollutant in the environment (APF-Assigned Protection Factor 20 X OEL - NPF-Nominal Protection Factor 50 X OEL).
What is NPF-NOMINAL PROTECTION FACTOR & APF ASSIGNED PROTECTION FACTOR? The Nominal Protection Factor is the theoretical protection level determined by the performance of Respirators during tests under laboratory conditions. The Assigned Protection Factor is the protection performance level of the mask in an environment where at least 95% is adequately trained and the user is supervised. It is not easy to demonstrate, measure and follow APF Performance. However, these calculations were made on average values. APF Value is determined as 4 OEL for P1 filters, 10 OEL for P2 filter and 20 OEL for P3 filter. It is safer to consider APF values in mask protection level evaluations.
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