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GB/T 18664-2002 (GBT 18664-2002)

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BASIC DATA
Standard ID GB/T 18664-2002 (GB/T18664-2002)
Description (Translated English) Selection, use and maintenance of respiratory protective equipment
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard C73
Classification of International Standard 13.340.30
Word Count Estimation 42,438
Date of Issue 2002-03-12
Date of Implementation 2002-10-01
Quoted Standard GB/T 2891-1995; GB 3836.1; GB 3836.2; GB 3836.4; GB 8958
Drafting Organization 3M China Ltd.
Administrative Organization National Personal Protective Equipment Standardization Technical Committee
Proposing organization State Administration of Work Safety
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary This standard specifies the respirator selection, use and maintenance of the principles, methods and requirements. This standard is applicable for the prevention of workplace air pollutants such as hypoxia and harm to human respiratory protective equipment used. This standard does not apply to underwater operations, aviation and medical care with respiratory equipment.


GB/T 18664-2002: PDF in English (GBT 18664-2002)
GB/T 18664-2002
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.340.30
C 73
Selection, use and maintenance of respiratory
protective equipment
ISSUED ON: MARCH 12, 2002
IMPLEMENTED ON: OCTOBER 01, 2002
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine
Table of Contents
Foreword ... 4 
Introduction ... 5 
1 Scope ... 6 
2 Normative references ... 6 
3 Terms, definitions and abbreviations ... 7 
3.1 Terms and definitions ... 7 
3.2 Abbreviations ... 12 
4 Choice of respiratory protective equipment ... 12 
4.1 General principles ... 12 
4.2 Selection by hazardous atmosphere ... 13 
4.3 Selection according to operating conditions ... 18 
4.4 Selection according to operator ... 19 
5 Use of respiratory protective equipment ... 20 
5.1 General principles ... 20 
5.2 Use of respiratory protective equipment in IDLH atmosphere ... 22 
5.3 Use of respiratory protective equipment in low temperature environments .. 22 
5.4 Replacement of filter elements of air-purifying respiratory protective equipment
... 22 
5.5 Use of supplied air respiratory protective equipment ... 23 
6 Maintenance of respiratory protective equipment ... 24 
6.1 Inspection and maintenance of respiratory protective equipment ... 24 
6.2 Cleaning and disinfection of respiratory protective equipment ... 24 
6.3 Storage of respiratory protective equipment ... 25 
7 Respiratory protection plan ... 25 
7.1 General principles ... 25 
7.2 Contents of respiratory protection plan ... 26 
7.3 Training contents of respiratory protection ... 26 
Appendix A (Informative) Factors to consider in evaluation of hazardous
atmosphere ... 28 
Appendix B (Normative) IDLH concentration ... 29 
Appendix C (Informative) Warning of toxic gases and vapors ... 41 
Appendix D (Informative) Examples for selection of respiratory protective
equipment ... 43 
Appendix E (Informative) Fit test ... 46 
Appendix F (Informative) Medical evaluation of the ability to use respiratory
protective equipment ... 54 
Appendix G (Normative) Face-seal check ... 56 
Appendix H (Informative) Check method for respiratory protection plan ... 58 
References ... 61 
Selection, use and maintenance of respiratory
protective equipment
1 Scope
This standard specifies the principles, methods and requirements for the
selection, use and maintenance of respiratory protective equipment.
This standard applies to respiratory protective equipment used to prevent harm
to the human body from oxygen deficiency and airborne contaminants in the
workplace.
This standard does not apply to breathing equipment for underwater operations,
aviation and medical rescue.
2 Normative references
The provisions in following documents become the provisions of this Standard
through reference in this Standard. For the dated references, the subsequent
amendments (excluding corrections) or revisions do not apply to this Standard;
however, parties who reach an agreement based on this Standard are
encouraged to study if the latest versions of these documents are applicable.
For undated references, the latest edition of the referenced document applies.
GB/T 2891-1995 Performance test methods for facepiece of filter type
respirator
GB 3836.1 Electrical apparatus for explosive gas atmospheres - Part 1:
General requirements
GB 3836.2 Electrical apparatus for explosive gas atmospheres - Part 2:
Flameproof enclosure “d”
GB 3836.4 Electrical apparatus for explosive atmospheres - Intrinsically safe
circuits and electrical apparatus
GB 8958 Safety regulation for working under hazardous condition of the
oxygen deficiency
Atmosphere-supplying respiratory protective equipment
Respiratory protective equipment capable of isolating the wearer's
respiratory organs from the working environment, relying on the air source
carried by the wearer or relying on an air pipe to introduce a clean air source
other than the working environment.
[GB/T 12903-1991, definition 4.1.21]
3.1.7
Supplied air respiratory protective equipment
An atmosphere-supplying respiratory protective equipment that introduces
in clean air via an airway tube through the breathing of the wearer or by
mechanical force.
[GB/T 12903-1991, definition 4.2.1.1]
3.1.8
Self-contained breathing apparatus
An atmosphere-supplying respiratory protective equipment which uses the
air source from the air bottle or oxygen bottle or an oxygen generator as
carried by the wearer.
[GB/T 12903-1991, definition 4.1.2.2]
3.1.9
Negative-pressure respiratory protective equipment
A respiratory protective equipment, the pressure in the facepiece of which in
a breathing cycle is less than the atmospheric pressure in the inhalation
stage of the user.
[GB 16556-1996, definition 3.2]
3.1.10
Positive-pressure respiratory protective equipment
A respiratory protective equipment, the pressure in the facepiece of which in
a breathing cycle is more than the atmospheric pressure.
[GB 16556-1996, definition 3.3]
3.1.11
The tiny solid particles suspended in the air, which are generally produced
by the condensation of gas or vapor, whose particle size is usually smaller
than that of dust.
3.1.18
Mist
Tiny droplets suspended in the air.
3.1.19
Low boiling point organic compound
Organic compounds which have a boiling point below 65 °C.
3.1.20
Hazardous atmosphere
Anoxic or atmospheric environment in which airborne contaminant
concentrations exceed the value as specified by national occupational health
standards.
3.1.21
Immediately dangerous to life and health concentration
The concentration of airborne contaminants in the hazardous atmosphere
reaches a certain dangerous level, which can be fatal, or can permanently
damage health, or can make people immediately lose their ability to escape.
3.1.22
Filter element
Filter material or filter component which is used by the respiratory protective
equipment to filter out harmful substances in the air.
Examples: canisters (filter cartridge), dust canisters, filter media, etc.
3.1.23
End-of-service-life indicator
A system that warns the user that respiratory protection is approaching a
failure.
3.1.24
The ratio of the concentration of airborne contaminants to the concentration
limit as specified by the national occupational health standard, which takes
an integer.
3.2 Abbreviations
The following abbreviations apply to this standard.
APF: Assigned protection factor
IDLH: Immediately dangerous to life and health
SCBA: Self-contained breathing apparatus
4 Choice of respiratory protective equipment
4.1 General principles
4.1.1 Without protection, no one shall be exposed to an air environment that
can or may endanger health.
4.1.2 It shall, according to the relevant national occupational health standards,
evaluate the air environment in which the operation is conducted (see Appendix
A for various factors to be considered in the evaluation), to identify the nature
of the hazardous atmosphere and determine the degree of harm.
4.1.3 It shall first consider the possibility of taking engineering measures to
control hazardous atmosphere. If the engineering control measures cannot be
implemented due to various reasons, or the hazardous atmosphere cannot be
completely eliminated, during the period when the engineering control
measures are not effective, it shall select the appropriate respiratory protective
equipment according to the provisions of 4.2, 4.3, 4.4 of this standard. See
Table 1 for classification of respiratory protective equipment. The selection
procedure is as shown in Figure 1.
4.1.4 It shall select the nationally recognized respiratory protective equipment
that meets the requirements of the standard.
4.1.5 When selecting respiratory protective equipment, it shall also refer to the
technical requirements in the instruction manual and meet its applicable
conditions.
4.1.6 If it is necessary to use respiratory protective equipment to prevent hazard
from dangerous atmosphere, the employer shall establish and implement a
standardized respiratory protection plan.
shall select the respiratory protective equipment capable of filtering
particle and its volatile gases simultaneously;
b) It shall select suitable dust facepiece according to the dispersion of the
particle;
c) If the particle is liquid or oily, it shall select the respiratory protective
equipment with suitable filter element;
d) If the particle is radioactive, it shall select the dust facepiece with the
highest filtration efficiency.
4.2.4.2 Protection against toxic gases and vapors
It may select atmosphere-supplying or air-purifying respiratory protective
equipment (see Table 3). If selecting the air-purifying type, it shall pay attention
to the following points:
a) Select applicable filter elements according to the types of toxic gases and