Proper use and maintenance of respiratory protection

Any respirator protection is limited, prior to use, the user must understand the product characteristics and use methods to understand certain special circumstances should be noted that the problems encountered and the special case handling methods. Read the instructions to make the first step to understand the product, including the product's suitability good instructions, functions, composition and method of assembly, use, inspection methods, maintenance methods, cleaning methods and storage methods and other information.

First, the use of respiratory protective equipment

GB/T18664 done on the proper use of certain emphasis.

1 Use before using methods provide training to ensure that each user has the ability to use correctly.

2 Go harmful to the environment, should be good to wear respiratory protective equipment, for gas type, should be ventilation, wear a mask after, prevention suffocation; pair of tight-fitting mask, you should perform user seal check to make sure to wear proper and seal, standard methods are detailed in Appendix G.

3 in hazardous environments respiratory protective equipment should be worn at all times, otherwise, still excessive exposure to harmful materials. For example, in an environment hazard factor of 6 using assigned protection factor of 10 respiratory Personal protective clothing, if wearing time for the actual exposure time of 90%, the actual exposure levels = (not wearing time exposure) + (wear time exposure) = ( 10% × 6) +90% (6 ÷ 10) = 0.6 +0.54 = 1.14, the actual exposure is 1.14 times the occupational health standards. Still exceeded!

4-purifying respirator filter element has a limited capacity, should be replaced.

(1) Replace dust filter elements. Generally with the use of time, dust and other particles gradually accumulate in the filter material, filtration efficiency, although improved, but also increased breathing resistance, comfort decline.

- For the simple dust masks, because there are no replacement parts, When you feel the breathing resistance increased significantly, and when the mask pollution, damaged, replace the entire mask.

- On the penthouse dust masks when feeling significantly increased breathing resistance, replacement filter elements.

- For powered air purifying, when sure the battery and the motor is normal, check the air volume producers found below the minimum limit, replace the dust components.

(2) replace the antivirus filter elements. Antivirus filter element life is affected by the design capacity, field types and the actual concentration of pollutants, the user respiration (labor intensity), ambient temperature and humidity and other factors. Relatively stable in the field of the above factors, according to the experience, the experimental data and other objective methods to determine the replacement time of the filter element, periodic replacement.

- When the user has been feeling contaminants taste, odor and irritation, it should be replaced immediately;

- Recorded after each practical use of time, to help determine replacement time;

- For a boiling point below 65 ℃ organic vapors (such as acetone, ether, etc.), general organic gases will shorten the life of the filter element, should be replaced after each use. If you use a larger interval (shown with days or weeks), re-use should be replaced.

- For no warning (odorless, non-irritating, such as mercury, carbon monoxide) or cautionary poor harmful substances (such as hydrogen sulfide, hydrogen cyanide, etc.), can not be determined if the filter elements remain valid after each use should be replace