This standard specifies the classification and marking, technical requirements, testing method and identification of non-powered air-purifying particle respirator.
This standard is applicable to non-powered air-purifying particle respirator.
This standard is not applicable to respirators used for preventing harmful gas and vapor and those used in oxygen-deficient environment, underwater operation, escape and fire protection.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 2890-2009 Respiratory protection - non-powered air-purifying respirators
GB/T 5703 Basic human body measurements for technological design
GB/T 10586 Specifications for damp-heat testing 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
GB/T 23465-2009 Respiratory protective equipment - Practical performance evaluation methods
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1
particle
solid, liquid or solid-liquid granular material suspending in the air, e.g., dust, fume, mist and microorganism
[GB/T 18664-2002, Definition 3.1.15]
3.2
dust
fine solid particle suspending in the air, generally generated by solid materials through mechanical crushing
[GB/T 18664-2002, Definition 3.1.16]
3.3
non-powered air-purifying respirator
air-purifying respirator overcoming the airflow resistance of the component by virtue of the user's respiration
[GB/T 18664-2002, Definition 3.1.3]
3.4
tight-fitting facepiece
facepiece capable of covering the nose and mouth and fitting with the face or that capable of covering the eyes, mouth and nose and fitting with the head and face
Note 1: the tight-fitting facepieces are classified into half facepieces and full facepieces.
Note 2: it is revised from Definition 3.1.5, GB/T 18664-2002.
3.5
half facepiece
tight-fitting facepiece capable of covering mouth and nose, or covering mouth, nose and lower jaw
Note: the half facepieces are classified into disposable facepieces and replaceable half facepieces.
3.6
full facepiece
tight-fitting facepiece capable of covering eyes, mouth, nose and lower jaw
3.7
disposable facepiece
half facepiece mainly composed of filter material, which may be equipped with exhalation valve
3.8
replaceable facepiece
tight-fitting half/full facepiece with single or multiple replaceable filter elements, which may be equipped with inhalation and/or exhalation valve or breathing hose
3.9
inhalation valve
one-way valve only allowing inhaled air to enter into but preventing exhaled air discharging through the facepiece
[GB 2890-2009, Definition 3.6]
3.10
exhalation valve
one-way valve only allowing exhaled air to be discharged through but preventing inhaled air entering into the facepiece
[GB 2890-2009, Definition 3.7]
3.11
breathing hose
flexible and airtight hose used for connecting facepiece and filter element
3.12
filter element
filter material or filter assembly used for the air-purifying respirator for filtering the harmful substances in the inhaled air
