GB/T 13075-2016 English PDF (GBT13075-2016)

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GB/T 13075-2016: Periodic inspection and evaluation of welded steel gas cylinders
GB/T 13075-2016
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 23.020.30
J 74
Replacing GB 13075-1999
Periodic Inspection and
Evaluation of Welded Steel Gas Cylinders
ISSUED ON. FEBRUARY 24, 2016
IMPLEMENTED ON. SEPTEMBER 1, 2016
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 Inspection Agency, Inspection Cycle and Inspection Items ... 6
4 Inspection Preparation ... 7
5 Appearance Inspection and Evaluation ... 8
6 Inspection and Evaluation of Valve Seat and Plug Seat ... 9
7 Internal Inspection and Evaluation ... 10
8 Wall-Thickness Inspection and Evaluation ... 10
9 Capacity Determination ... 11
10 Hydrostatic Test ... 11
11 Internal Drying ... 12
12 Inspection and Assembly of Cylinder Valve, Safety Pressure-Relief Device
and Blind Plug ... 12
13 Air Tightness Test ... 13
14 Other Work ... 13
Appendix A (Informative) Determination of Depth Values of Depression, Pits,
Knock Injuries and Scratches ... 15
Appendix B (Normative) Determination of Water Capacity of Gas Cylinder ... 17
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
This Standard replaced GB 13075-1999 Periodic Inspection and Evaluation of Welded
Steel Gas Cylinders. Compared with GB 13075-1999, this Standard has the major
changes as follows.
--- Applicable scope of the standard.
a) Change the pressure of hydraulic test no greater than 7.5MPa into nominal
working pressure no greater than 10MPa (gauge pressure);
b) Change the nominal capacity from the original 10L~1000L into 1L~1000L;
c) Add the containing gases of applicable compressed gases or mixed gases;
d) Change the applicable gas cylinder types into inapplicable internal filled gas
cylinders, fire extinguishing cylinders, and liquefied petroleum gas steel
cylinders designed and manufactured as per GB 5842;
--- Add the following standards in the normative references. NB/T 47013.2, NB/T
47013.4, NB/T 47013.5, TSG Z7001;
--- Add requirements for inspection agency. the inspection agency performing the
inspection against the gas cylinders shall meet the requirements of GB 12135;
and shall be approved by national special equipment safety supervision and
management department as per TSG Z7001;
--- Modify the requirements for residual wall-thickness after the treatment of knock
injuries, scratches and corrosion defects; confirm the residual wall-thickness
shall be less than design wall-thickness of cylinder body;
--- Modify the requirements for capacity determination;
--- Confirm the repairmen against the cylinder valve is not allowed;
--- Add inspection against the fusible alloy plugs;
--- Add the requirements for periodic inspection report of gas cylinders;
--- Add the requirements for treatment mode of rejected gas cylinders;
--- Add contents encouraging to use advanced information technology to manage
the gas cylinders.
Please note some contents of this document may involve patents. The issuer of this
Periodic Inspection and
Evaluation of Welded Steel Gas Cylinders
1 Scope
This Standard specifies the basic method sand technical requirements for periodic
inspection and evaluation of welded steel gas cylinders (hereinafter refers to as “gas
cylinder”).
This Standard is applicable to the periodic inspection and evaluation of welded steel
gas cylinders that can contain compressed gases, low-pressure liquefied gases or
mixed gases, and can be re-filled with nominal working pressure no greater than
10MPa (gauge pressure), nominal capacity 1L~1000L.
This Standard is not applicable to the internal filled gas cylinders, fire extinguishing gas
cylinders, and liquefied petroleum gas cylindered designed and manufactured as per
GB 5842.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB 5100 Welded Steel Gas Cylinders
GB 7144 Coloured Cylinder Mark for Gases
GB 8335 Special Threads for Gas Cylinders
GB/T 8336 Special Thread Gauges for Gas Cylinders
GB/T 9251 Methods for Hydrostatic Test of Gas Cylinders
GB/T 10878 Special Taps of Taper Thread for Gas Cylinders
GB 12135 Technological Specifications for Periodic Inspection Station of Gas
Cylinders
GB/T 12137 Methods for Leakage Test of Gas Cylinders
NB/T 47013.2 Nondestructive Testing of Pressure Equipment – Part 2.
Radiographic Testing
NB/T 47013.4 Nondestructive Testing of Pressure Equipment – Part 4. Magnetic
Particle Testing
NB/T 47013.5 Nondestructive Testing of Pressure Equipment – Part 5. Penetrant
Testing
TSG R0006 Gas Cylinder Safety Specification
TSG Z7001 Accreditation Criteria on Special Equipment Inspection Agencies
3 Inspection Agency, Inspection Cycle and Inspection
Items
3.1 Inspection agency
The inspection agency performing the periodic inspection of gas cylinder shall meet
the requirements of GB 12135; and shall be approved by national special equipment
safety supervision and management department as per TSG Z7001.
3.2 Inspection cycle
The gas cylinder containing non-corrosive high-purity gases with purity greater than or
equal to 99.999% shall be inspected once every 5 years; the gas cylinder containing
the gas generated corrosive role against the cylinder materials, submerge gas cylinder,
as well as gas cylinder in constant contact with seawater shall be inspected once every
2 years; while the gas cylinder containing other gases shall be inspected once every 3
years. The inspection cycle of gas cylinder containing mixed gas shall be subject to
the gas with shortest inspection cycle.
In the course of use, if the cylinder is found to have serious corrosion, damage or
dubious safety and reliability problems, the inspected shall be performed in advance.
The gas cylinder that has been stored in the warehouse or shutdowns for more than
one inspection cycle, it shall be re-inspected before starting to use.
3.3 Inspection items
The periodic inspection items of gas cylinders include appearance inspection, cylinder-
mouth thread inspection, internal inspection, wall-thickness determination, valve seat
and plug seat inspection, capacity determination, hydrostatic test, inspection of
cylinder valve, safe pressure-relief device and blind plug, as well as air tightness test.
5.5.1 For the gas cylinders with residual wall-thickness on the positions where there
is independent spot corrosion, linear corrosion, local corrosion, and general corrosion
is less than design wall-thickness, they shall be rejected.
5.5.2 For the gas cylinders with corrosion depth and range can’t be confirmed due to
the severe corrosion, they shall be rejected.
5.6 Inspection and evaluation of welded joints
5.6.1 The gas cylinders with welding seam having undercut or both welding seam
and heat affected zone having cracks, air holes, craters, and irregular mutations shall
be rejected.
5.6.2 The gas cylinders with welding seam lower than the base metal, after the
scratches, knock injuries, and pits on the longitudinal and circumferential welding
seams is ground shall be rejected.
5.6.3 The gas cylinders with res...