1 Scope
This Standard specifies the technical requirements, testing methods and marking of non-powered air-purifying particle respirator.
This Standard is applicable to the non-powered air-purifying respiratory protective equipment for various particles.
This Standard is not applicable to the respiratory protective equipment for harmful gas and steam. This Standard is not applicable to the respiratory protective equipment used in the anoxygenous environment, underwater operation, escape process and fire fighting process.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB/T 2891 Performance Test Methods for Facepiece of Filter Type Respirator
GB/T 5703 Basic Human Body Measurements for Technological Design
GB/T 10586 Specifications for Damp Heat Chambers
GB/T 10589 Specifications for Low Temperature Test Chambers
GB/T 11158 Specifications for High Temperature Test Chambers
GB/T 18664-2002 Selection, Use and Maintenance of Respiratory Protective Equipment
3 Terms and Definitions
For the purposes of this standard, the following terms and definitions apply.
3.1
Particle
Solid, liquid or solid - liquid granular materials suspending in the air, e.g. dust, fume, mist and microorganism
[GB/T 18664-2002, Definition 3.1.15]
3.2
Dust
Tiny solid particles suspending in the air that is generally formed by the process of solid materials being crushing under mechanical force
[GB/T 18664-2002, Definition 3.1.16]
3.3
Fume
Tiny solid particles suspending in the air that is generally formed by the process of gas or steam being condensed, with a particle size generally less than that of the dust
[GB/T 18664-2002, Definition 3.1.17]
3.4
