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Respirators face masks

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Respirators face masks

  1. 1. Face Mask’s Respirators F.F.P’s Dr.Johny B
  2. 2. Q1) What is FFP ? A) Filtering Face Piece. Q2) Types of FFP? A2) The EN 149 standard defines three classes of filter efficiency for these masks, namely FFP1, FFP2 and FFP3. - It is an example of a mechanical filter respirator.
  3. 3. FFP : 1 • It is the least filtering mask of the three. • Aerosol filtration percentage: 80% minimum. • Internal leak rate: Maximum 22%. • It is mainly used as a dust mask (for example for DIY jobs). • Dust can cause lung diseases, such as - silicosis, - anthracose, - asbestosis and - siderose (in particular dust from coal, silica, iron ore, zinc, aluminum or even cement).
  4. 4. F.F.P : 2 • Aerosol filtration percentage: Not less than 94%. • Internal leak rate: Maximum 8%. • This mask offers protection in various areas such as the glass industry, foundry, construction, pharmaceutical industry and agriculture. • It effectively stops powdered chemicals. • This mask can also serve as protection against influenza viruses such as avian influenza or severe acute respiratory syndrome associated with the coronavirus (SARS), as well as against the bacteria of pneumonic plague and tuberculosis. • It is similar to the N95 mask
  5. 5. F.F.P : 3 • Aerosol filtration percentage: Not less than 99%. • Internal leak rate: Maximum 2% • The FFP3 mask is the most filtering of the FFP masks. • It protects against very fine particles such as asbestos and ceramic. • It does not protect against gases and in particular nitrogen oxide.
  6. 6. Class Filter penetration limit (at 95 L/min air flow) Inward leakage Typical Elastic Band FFP1 Filters at least 80% of airborne particles <22% Yellow FFP2 Filters at least 94% of airborne particles <8% Blue or White FFP3 Filters at least 99% of airborne particles <2% Red
  7. 7. • What is Exhalation valve ? • Wearing a respirator for an extended period of time can become uncomfortable due to breathing resistance and buildup of heat and humidity inside the mask. - To alleviate these issues and improve comfort, some masks are equipped with an exhalation valve. - This valve allows the exhaled air to escape freely from the mask, avoiding condensation and preventing the filter from becoming less permeable and unpleasant to wear.
  8. 8. - FFP3 masks generally have very thick filter layers and a higher resistance, which makes breathing more difficult. For this reason, most of these FFP3 masks are offered with an exhalation valve. - A mask with an exhalation valve protects the wearer just as well as a mask without a valve. - However, it is important to note that an exhalation valve allows unfiltered air to freely exit the mask. Therefore, in the case of diseases with airborne or respiratory droplet transmission (like COVID-19) a mask with a valve will not protect other people and the environment from the pathogens potentially exhaled by the person wearing such a mask. - In these situations, masks without exhalation valves are preferable in order to protect others. - Additionally, the exhalation valve might malfunction, which could increase the risk of infiltration of contaminants or toxic dust.
  9. 9. • How to Use FFP ? • The mask should be as close to the face as possible; a metal tab makes it possible to adjust the mask to the bridge of the nose. • A beard is not recommended • The elastics should be shortened by a button for young children. • As a protection against infectious diseases, it is only effective in combination with frequent and effective hand washing.
  10. 10. • Hands should be washed thoroughly before putting on the mask. • The mask should not be touched during use (or hands should be washed immediately). • The mask should be replaced when wet. • It should be removed by taking it from the back without touching the front of the mask and then placing it into a suitable closed container before washing hands again. • To protect other people (and not only the wearer) the mask should not have an exhalation valve.
  11. 11. • Are they RE-usable? • In March 2020, at the time of the coronavirus pandemic in the Netherlands, due to the scarcity of mouth masks the Netherlands National Institute for Public Health and the Environment (RIVM) published a (brief) advice on how to sterilize and reuse FFP masks that were originally certified for single use
  12. 12. • What are Standards for FFP ? • FFP masks must meet certain standards. To qualify as FFP, the masks must meet the EN 149 standard.
  13. 13. What is EN 149 standard? • This European standard, the first version of which dates from 2001, establishes the minimum characteristics of respiratory protection equipment. It includes laboratory tests, field tests and certain requirements to ensure the conformity of the masks. The following points are analyzed:- • Packaging • Materials: resistance to manipulation • Practical performance test • Leakage: total leakage inwards and penetration of the filter material
  14. 14. 2009 version of EN149:- • With the publication of the 2009 version of the standard, the designation of the respiratory protection mask is now "particulate filtering half mask". The abbreviation NR or R is added after FFP1, FFP2, FFP3: • NR (not reusable): if the use of the filtering half-face mask is limited to one working day. It is not reusable. • R (reusable): if the filtering half-face mask can be used for more than one working day, so it is reusable.
  15. 15. Additional suffixes include:- • Anti-clogging NR masks (D). When the half mask has passed the dolomite dust test, a letter D can be added to indicate that the service life may exceed 8 h. Example: FFP3 NR D. • Valve :- The presence of a valve can be indicated by the letter V. • Particulate type. The letters S or L respectively specify the filtration of solid dust (NaCl-only) or liquid mist (paraffin oil). Example: FFP3 SLV.
  16. 16. • What is Dolomite test? • This test checks whether the mask maintains a good level of breathing resistance after being subjected to high levels of dolomite dust. • This means the "D" symbol is a quality indicator for the filter material used and ensures that a mask can be worn over a long period even at high levels of dust concentration.
  17. 17. Legal notes:- • FFP respirators are considered Personal Protective Equipment (PPE). Here is the notice that should appear on every mask :- • Manufacturer's name • Mask • CE number of the certification body + EN 149: 2009 + the mask class (FFP1, FFP2 or FFP3) + acronym (NR or R) • The marking must comply with Directive 89/686 / EECon PPE. • If any of these entries are missing, the mask will be considered non- compliant.
  18. 18. • There are some European organizations that issue an examination certificate confirming conformity and specifying the characteristics of the products: • INRS then APAVE in France • INSPEC in Great Britain • FACHAUSSCHUSS in Germany
  19. 19. • A few other jurisdictions use FFP-like standards to govern their masks as well. They include:- • Russia (GOST R 12.4.191-2011): identical. • South Korea (KMOEL - 2017-64): considered identical to pre-2009 version. FFP1 is called "2nd grade" or KF80, FFP2 "1st grade" or KF94, and FFP3 "special grade" or KF99. • Australia and New Zealand (AS/NZ 1716:2012): similar grades with a different test agent. Grades are written simply "P". • Brazil (ABNT/NBR 13698:2011): identical to pre-2009 version. Grades are written as "PFF". • Japan (JMHLW-Notification 214, 2018): similar grades with a different coding scheme for NR/R and S/L types. Written with a two-letter prefix D/R and S/L that maps to NR/R and S/L respectively. Leakage requirement not present. • Taiwan (CNS 14755): D1/D2/D3 grades for 80/95/99 efficiency. No requirements for inward leakage.
  20. 20. • What is EN#14683:2005? • This European Standard specifies construction and performance requirements, and test methods for surgical masks intended to limit the transmission of infective agents from staff to patients and (in certain situations vice versa) during surgical procedures in operating theatres and other medical settings with similar requirements. • This European Standard is not applicable to masks intended exclusively for the personal protection of staff. • This standard is intended to help facilitate the choice of surgical face masks in the European Market by standardizing the information and performance data required for the masks.
  21. 21. • There are three test methods used to classify surgical masks:- 1) Bacterial Filtration Efficiency in vitro (BFE) 2) Breathing Resistance (Delta P) 3) Splash Resistance (ASTM F1862-‐07)
  22. 22. 1) Bacterial Filtration Efficiency in vitro (BFE) (ASTM F2101-‐07) • This test is used to determine the amount of infective agent that is retained by the surgical facemask, which is directly related to the amount of bacteria released through the mask into the air of the surgical theatre. • Classification: BFE => 95% TYPE I BFE => 98% TYPE II
  23. 23. 2) Breathing Resistance (Delta P) • This test is used to determine the resistance airflow of the facemask. Classification: • TYPE I & II (non splash resistant) = < 29.4 Pa/cm2 • TYPE IR & IIR (splash resistant) = < 49.0 Pa/cm2 • ‘R’ splash resistant.
  24. 24. 3) Splash Resistance (ASTM F1862-07):- • This test is used to determine the resistance penetration of potentially contaminated fluid splashes. Classification:- • TYPE I & TYPE II not applicable TYPE IR & TYPE IIR >120 mmHg, • 120 mmHg is a minimum value. It corresponds to the average systolic arterial blood pressure, and intends to protect against ruptures in small arteries causing small sprays of blood. • Some products off protection even in excess of the 120 mmHg.
  25. 25. ThankYou…
  • johny9285

    Jun. 26, 2020
  • yuvraj909

    Jun. 16, 2020

ALL about face masks , respirators

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