GB 18664-2025Selection, use and maintenance of respiratory protective equipment (English PDF)

3 Terms and definitions

4 Selection of the respiratory protective equipment

5 Use of the respiratory protective equipment

6 Maintenance of the respiratory protective equipment

7 Respiratory protection programme

8 Discarding and replacement

Foreword

This document has been drafted in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.

This document supersedes GB/T 18664-2002 Selection, use and maintenance of respiratory protective equipment. Compared with GB/T 18664-2002, apart from structural adjustments and editorial changes, the main technical changes are as follows:

a) "respiratory protective articles" has been changed to "respiratory protective equipment" or "respirator";

b) some terms and definitions have been changed (see 3.1 to 3.10, 3.13, 3.15 to 3.18, 3.20, 3.21, 3.26, 3.32 and 3.35; 3.1.1 to 3.1.13, 3.1.15 to 3.1.17, 3.1.20 and 3.1.25 of the 2002 edition);

c) the abbreviations have been deleted (see 3.2 of the 2002 edition);

d) 12 terms have been added: half facepiece, full facepiece, disposable facepiece, replaceable facepiece, microorganism, aerosol, oxygen deficiency, immediately dangerous to life or health environment, workplace protection factor, simulated workplace protection factor, electrostatic spraying and electrostatic powder spraying (see 3.7.1, 3.7.2, 3.7.3, 3.8, 3.13.4, 3.14, 3.16, 3.19, 3.28, 3.29, 3.31 and 3.32);

e) the requirements for the situation without protection have been changed (see 4.1.1; 4.1.1 of the 2002 edition);

f) the description of the control of chemical hazardous factors has been changed (see 4.1.3 and 4.2.2; 4.1.3 and 4.2.2 of the 2002 edition);

g) the compliance requirements for respiratory protective equipment have been changed (see 4.1.4; 4.1.4 of the 2002 edition);

h) a method has been added for determining the hazard level of air contaminants for which no occupational exposure limit has been established [see 4.2.2 e)];

i) the selection procedure for respiratory protective equipment has been changed (see Figure 1; Figure 1 of the 2002 edition);

j) a method has been added for selecting respiratory protective equipment for air contaminants for which the hazard ratio cannot be calculated [see 4.2.3.2 b)];

k) the APF values of respiratory protective equipment have been changed (see Table 2; Table 2 of the 2002 edition);

l) the requirements for selecting respiratory protective equipment according to the type of air contaminant have been changed (see 4.2.4; 4.2.4 of the 2002 edition);

m) the content on selecting respiratory protective equipment according to the type and hazard level of air contaminants has been changed (see Table 3; Table 3 of the 2002 edition);

n) the requirements for selecting respiratory protective equipment according to working conditions have been changed (see 4.3; 4.3 of the 2002 edition);

o) the requirements for selecting respiratory protective equipment according to the workers have been changed (see 4.4; 4.4 of the 2002 edition);

p) requirements have been added for the use of respiratory protective equipment in high-temperature, high-humidity and combined high-temperature and high-humidity environments (see 5.3);

q) the requirements for replacement of the filter elements of air-purifying respiratory protective equipment have been changed (see 5.4; 5.4 of the 2002 edition);

r) the use of supplied-air respiratory protective equipment has been changed (see 5.5; 5.5 of the 2002 edition);

s) the use of self-contained breathing apparatus has been added (see 5.6);

t) the requirements for the maintenance of respiratory protective equipment have been changed (see Clause 6; Clause 6 of the 2002 edition);

u) discarding and replacement has been added (see Clause 8).

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.

This document was proposed by and is under the jurisdiction of the Ministry of Emergency Management of the People's Republic of China.

The previous editions of this document and of the document it supersedes are as follows:

- first published in 2002 as GB/T 18664-2002;

- this is the first revision.