GB/T 18664-2002 English PDF (GBT18664-2002)

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GB/T 18664-2002: Selection, use and maintenance of respiratory protective equipment
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
me...