GB 13004-1999 Periodic inspection and evaluation of seamless steel gas cylinder
1 Scope
This standard specifies the basic methods and technical requirements for periodic inspection and evaluation of seamless steel gas cylinders in use.
This standard is applicable to Periodic inspection and evaluation on seamless steel gas cylinders with a hydrostatic test pressure of not more than 45 MPa and a water volume of 0.4 ~ 80 L, which are used to store and transport permanent gas or high-pressure liquefied gas and can be refilled, as well as seamless steel natural gas cylinders for vehicles (hereinafter referred to as gas cylinders).
This standard does not apply to gas cylinders filled with solid fillings and gas cylinders used for fire extinguishing.
2 Normative References
The following standards contain provisions which, through reference in this standard, constitute provisions of This standard. At the time of publication, all editions listed are valid. All the standards will be modified, however, parties to agreements based on this standard shall investigate the possibility of applying the most recent editions of the documents indicated below
GB 5099-1994 Seamless steel gas cylinders
GB 7144-1986 Coloured cylinder mark for gases
GB 8335-1998 Special threads for gas cylinders
GB/T 8336-1998 Special thread gauges for gas cylinders
GB/T 10878-1989 Special taps of taper threads for gas cylinders
GB/T 12137-1989 Methods for leakage test of gas cylinders
GB/T 9251-1997 Methods for hydrostatic test of gas cylinders
GB/T 13005-1991 Terminology of gas cylinders
LD 96-1996 Cylinder modification procedure
3 Inspection cycle and inspection items
3.1 Gas cylinders containing inert gases shall inspected every five years; gas cylinders containing corrosive gases, submersible gas cylinders and gas cylinders that are often in contact with seawater are inspected every two years; gas cylinders containing other gases shall be inspected every three years.
If any gas cylinder is found to be seriously corroded or damaged during use, or there is any doubt about its safety and reliability, it shall be inspected in advance.
Cylinders that are in stock or have been out of service for longer than one inspection period shall be inspected before being put into use.
3.2 Periodic inspection items of gas cylinders include visual inspection, hammer inspection, internal inspection, mouth thread inspection, weight and volume measurement, hydrostatic test, valve inspection, and air tightness test.
4 Preparation for inspection
Contents
Foreword i
1 Scope
2 Normative References
3 Inspection cycle and inspection items
4 Preparation for inspection
5 Visual inspection and evaluation
6 Hammer inspection
7 Mouth thread inspection
8 Internal inspection
9 Weight and volume measurement
10 Hydrostatic test
11 Internal drying
12 Inspection and assembly of cylinder valve
13 Air tightness test
14 Post-inspection procedures
Annex A (Normative) Measurement of gas cylinder volume by using the water volume method
Annex B (Informative) Method for measuring the depth of depressions, pits, bumps and scratches
GB 13004-1999 Periodic inspection and evaluation of seamless steel gas cylinder
1 Scope
This standard specifies the basic methods and technical requirements for periodic inspection and evaluation of seamless steel gas cylinders in use.
This standard is applicable to Periodic inspection and evaluation on seamless steel gas cylinders with a hydrostatic test pressure of not more than 45 MPa and a water volume of 0.4 ~ 80 L, which are used to store and transport permanent gas or high-pressure liquefied gas and can be refilled, as well as seamless steel natural gas cylinders for vehicles (hereinafter referred to as gas cylinders).
This standard does not apply to gas cylinders filled with solid fillings and gas cylinders used for fire extinguishing.
2 Normative References
The following standards contain provisions which, through reference in this standard, constitute provisions of This standard. At the time of publication, all editions listed are valid. All the standards will be modified, however, parties to agreements based on this standard shall investigate the possibility of applying the most recent editions of the documents indicated below
GB 5099-1994 Seamless steel gas cylinders
GB 7144-1986 Coloured cylinder mark for gases
GB 8335-1998 Special threads for gas cylinders
GB/T 8336-1998 Special thread gauges for gas cylinders
GB/T 10878-1989 Special taps of taper threads for gas cylinders
GB/T 12137-1989 Methods for leakage test of gas cylinders
GB/T 9251-1997 Methods for hydrostatic test of gas cylinders
GB/T 13005-1991 Terminology of gas cylinders
LD 96-1996 Cylinder modification procedure
3 Inspection cycle and inspection items
3.1 Gas cylinders containing inert gases shall inspected every five years; gas cylinders containing corrosive gases, submersible gas cylinders and gas cylinders that are often in contact with seawater are inspected every two years; gas cylinders containing other gases shall be inspected every three years.
If any gas cylinder is found to be seriously corroded or damaged during use, or there is any doubt about its safety and reliability, it shall be inspected in advance.
Cylinders that are in stock or have been out of service for longer than one inspection period shall be inspected before being put into use.
3.2 Periodic inspection items of gas cylinders include visual inspection, hammer inspection, internal inspection, mouth thread inspection, weight and volume measurement, hydrostatic test, valve inspection, and air tightness test.
4 Preparation for inspection
Contents of GB 13004-1999
Contents
Foreword i
1 Scope
2 Normative References
3 Inspection cycle and inspection items
4 Preparation for inspection
5 Visual inspection and evaluation
6 Hammer inspection
7 Mouth thread inspection
8 Internal inspection
9 Weight and volume measurement
10 Hydrostatic test
11 Internal drying
12 Inspection and assembly of cylinder valve
13 Air tightness test
14 Post-inspection procedures
Annex A (Normative) Measurement of gas cylinder volume by using the water volume method
Annex B (Informative) Method for measuring the depth of depressions, pits, bumps and scratches
