GB 6220-2009 English PDF (GB6220-2009)

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GB 6220-2009: Respiratory protection -- Long tube breathing apparatus
GB 6220-2009
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.340.30
C 73
Replacing GB 6220-1986, GB 6221-1986
Respiratory Protection -
Long Tube Breathing Apparatus
ISSUED ON: APRIL 13, 2009
IMPLEMENTED ON: DECEMBER 01, 2009
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 5
4 Product Classification and Composition ... 8
5 Technical Requirements ... 8
6 Test Methods ... 14
7 Marking ... 17
Foreword
The Sub-clauses 5.2, 5.3, 5.4, and 7.2 in this Standard are mandatory, while the
rest are recommended.
This Standard replaced GB 6220-1986 Long Tube Respirators; and GB 6221-1986
Performance Test Methods of Long Tube Respirators.
Compared with GB 6220-1986 Long Tube Respirators; and GB 6221-1986
Performance Test Methods of Long Tube Respirators, this Standard made the major
changes as follows:
--- Add the low flowrate warning requirements for the high-pressure air mask;
--- Add the strength requirements for the structure and parts;
--- Add the technical requirements and test methods of the high-pressure portion,
warning device, pressure display device for the air-supply mask of the high-
pressure cylinder, as well as the gas cylinder;
--- Modify the technical requirements of the mask lens;
--- Modify the test methods of breathing resistance;
--- Add the test requirements for air-supply valve at different openings;
--- Add the high and low temperature adaptability requirements and the test
methods;
--- Add the marking requirements.
This Standard was proposed by State Administration of Work Safety.
This Standard shall be under the jurisdiction of National Technical Committee on
Personal Protective Equipment of Standardization Administration of China (SAC/TC
112).
Drafting organization of this Standard: Beijing Municipal Institute of Labor Protection.
Participating drafting organizations of this Standard: Institute of Chemical Defense;
and MSA (China) Safety Equipment Co., Ltd.
Chief drafting staffs of this Standard: Yang Wenfen, Ding Songtao, Xiao Yiqing, Yao
Haifeng, Chen Zhuowei, Zang Lanlan, Zhou Yunyun, and Luo Mufu.
The historical editions replaced by this Standard are as follows:
--- GB 6220-1986;
--- GB 6221-1986.
Respiratory Protection -
Long Tube Breathing Apparatus
1 Scope
This Standard specifies the product classification and composition, technical
requirements, test methods and marking of long tube breathing apparatus.
The products specified in this Standard are not suitable for fire-fighting and rescue
sites.
2 Normative References
The provisions in following documents become the provisions of this Standard through
reference in this Standard. For dated references, the subsequent amendments
(excluding corrigendum) 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 1226 General Pressure Gauge
GB 2890-2009 Respiratory Protection - Non-Powered Air-Purifying Respirators
GB 5099 Seamless Steel Gas Cylinders
GB/T 16556-2007 Self-Contained Open-Circuit Compressed Air Breathing
Apparatus
DOT-CFFC Basic Requirements for Fully Wrapped Carbon-Fiber Reinforced
Aluminum Lined Cylinders
3 Terms and Definitions
For the purposes of this Document, the following terms and definitions apply.
3.1 Long tube breathing apparatus
The protective article that protects the wearer's respiratory organs from the
surrounding air and transports clean air for breathing through long tubes.
NOTE: Long tube breathing apparatus is divided into: self-inhalation long tube breathing
apparatus, powered long tube breathing apparatus, and long tube breathing apparatus with
high pressure.
3.1.1 Self-inhalation long tube breathing apparatus
The long tube breathing apparatus that allows the wearer to breathe spontaneously to
get fresh, clean air.
3.1.2 Powered long tube breathing apparatus
The long tube breathing apparatus that uses a fan or air compressor to deliver fresh,
clean air to the wearer.
3.1.3 Long tube breathing apparatus with high pressure
The long tube breathing apparatus that uses compressed air or high-pressure gas
cylinders to deliver clean air to the wearer.
NOTE 1: Also known as pressure demand long tube breathing apparatus.
NOTE 2: The long tube is a pressure-bearing component during gas transmission.
3.2 Breathing tube
The flexible and air-tight tube for connecting masks with long tube.
3.3 Straps
A ring or sleeve to secure a long tube to the waist of the wearer.
NOTE: The straps include a belt and a hanging ring.
3.4 Long tube
Air-tight, flexible and long breathing tube for conveying clean air.
3.5 Tight-fitting face masks
A mask that can cover the nose, mouth, and face, or a mask that can cover the eyes,
nose, and mouth, and close to the head and face.
NOTE 1: The tight-fitting face mask is used to ensure the isolation of the working environment
by the tight-fitting frame.
NOTE 2: Tight-fitting face mask are divided into full mask and half mask.
3.5.1 Full mask
A tight-fitting face mask that is tight-fitting the head, and covers the eyes, face, nose,
mouth, and jaw.
3.5.2 Half mask
A tight-fitting face mask that is tight-fitting the head, and covers the mouth and nose,
or covers the mouth, nose, and jaw.
3.6 Loose-fitting facepiece
The air introduction device for positive pressure breathing protection equipment covers
only the eyes, nose and mouth, and tight-fitting the face.
3.7 Continuous flow valve
In an air-supply long tube breathing apparatus, a device that allows the wearer to
adjust the amount of inspiratory air.
3.8 Low-resistance filters
In the self-inhalation long tube breathing apparatus, a large-pore filter device is
installed at the inlet end of the long tube to prevent foreign matter from entering.
NOTE: This filter can prevent foreign matter above 0.15mm from passing through.
3.9 Demand valve
Air-supply valve
The valve controlled by the breathing action of the lungs, it opens when needed and
supplies a breathable gas.
3.10 Warning device
A device that warns the wearer that respiratory protection is about to or has lost
effective protection.
3.11 Static pressure
After the positive pressure device of the air supply valve is opened, the pressure in the
mask cavity when the airway of the respirator is balanced.
3.12 High pressure
The absolute pressure with air pressure greater than or equal to 10 MPa.
3.13 Medium pressure
Pressures between 6kPa and 1MPa.
3.14 Low pressure
Pressures above atmospheric pressure and not exceeding 6kPa.
3.15 Dead space
The volume of gas re-inhaled from the previous exhalation.
NOTE: It is expressed by the volume fraction of carbon dioxide in the inhaled air.
4 Product Classification and Composition
The classification, composition, working environment, air supply source and pressure-
bearing capacity of typical long tube breathing apparatus are shown in Table 1.
Table 1 -- Classification and Composition of Long Tube Breathing Apparatus
Type of long tube
breathing
apparatus
Major component and order ...