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GB/T 13075-2016: Periodic Inspection and Evaluation of Welded Steel Gas Cylinders Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 13075: Historical versions
Similar standardsGB/T 13075-2016: Periodic Inspection and Evaluation of Welded Steel Gas Cylinders---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT13075-2016GB 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 ContentsForeword ... 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 ... 17ForewordThis 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 Cylinders1 ScopeThis 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 ReferencesThe 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 Agencies3 Inspection Agency, Inspection Cycle and InspectionItems 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 residual wall-thickness less than design wall-thickness, after the scratches and knock injuries on the longitudinal and circumferential welding seam heat affected zone is ground shall be rejected. 5.6.4 The gas cylinders with depth of depression on longitudinal and circumferential welding seams and their heat affected zone greater than or equal to 6mm shall be rejected. 5.6.5 When the type and severity of welded joints are dubious, the inspector shall confirm the non-destructive testing position, method, and detection ratio; and perform the magnetic particle, penetrant, and radiographic non-destructive test as per NB/T 47013.2, NB/T 47013.4, NB/T 47013.5. The qualified levels of magnetic particle and penetrant testing shall be no less than Level-I; while the radiographic testing shall be no less than Level-II.6 Inspection and Evaluation of Valve Seat and PlugSeat 6.1 Inspection contents and evaluation methods 6.1.1 Visually observe or use low-power magnifier to check valve seat or plug seat one by one, as well as thread to see whether they have cracks, deformation, corrosion or other mechanical damages. 6.1.2 The gas cylinders with valve seat or plug seat having cracks, slopes, collapses shall be r... ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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