Standard No.:	GB/T 13004-2016
English Name:	Periodic inspection and evaluation of seamless steel gas cylinders
Chinese Name:	钢质无缝气瓶定期检验与评定
Chinese Classification:	J74    Pressure vessel
Professional Classification:	GB    National Standard
ICS Classification:	23.020.30 23.020.30    Gas pressure vessels, gas cylinders 23.020.30
Source Content Issued by:	AQSIQ; MOH
Issued on:	2016-02-24
Implemented on:	2016-9-1
Status:	valid
Superseding:	GB 13004-1999 Periodic inspection and evaluation of seamless steel gas cylinders
Target Language:	English
File Format:	PDF
Word Count:	7500 words
Translation Price(USD):	120.0
Delivery:	via email in 1 business day

GB/T 13004-2016 Periodic inspection and evaluation of seamless steel gas cylinders 1 Scope This standard specifies the basic methods and technical requirements for periodic inspection and evaluation of seamless steel gas cylinders in use (hereinafter referred to as gas cylinders). This standard is applicable to the periodic inspection and evaluation of refillable seamless steel gas cylinders with a nominal working pressure of not more than 30 MPa and a nominal volume of 0.4 L ~ 150 L, which are used to contain compressed gas, high-pressure liquefied gas, or mixed gases. It is not applicable to gas cylinders filled with packing, gas cylinders for fire extinguishing, and gas cylinder pressure vessels attached to means of transport, machinery and equipment Note: Periodic inspection may be carried out for gas cylinders with a nominal volume less than 0.4 L with reference to this standard. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB 7144 Colored 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 threads for gas cylinders GB 12135 Technological specifications for periodic inspection station of gas cylinders GB/T 12137 Methods for leakage test of gas cylinders TSG R0006 Supervision regulation on safety technology for gas cylinder TSG Z7001 Rules for special equipment inspection and testing organization approval 3 Inspection body, inspection period and inspection items 3.1 Inspection body Inspection bodies conducting gas cylinder inspection shall comply with the requirements of GB 12135 and be approved by the national special equipment safety supervision and management department in accordance with TSG Z7001. 3.2 Inspection period Gas cylinders used to contain nitrogen, hexafluoroethane, inert gas and non-corrosive high-purity gas with a purity greater than or equal to 99.999% shall be inspected every five (5) years; gas cylinders used to contain gases that can corrode the gas cylinder material, submersible gas cylinders, and gas cylinders that are often in contact with seawater shall be inspected every two (2) years; gas cylinders used to contain other gases are inspected every three (3) years. The inspection cycle for gas cylinders used to contain mixed gases shall be determined according to the gas with the shortest inspection cycle among the mixed gases. 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.

Contents Foreword i 1 Scope 2 Normative References 3 Inspection body, inspection period and inspection items 4 Preparation for inspection 5 Appearance inspection 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 Other work Annex A (Informative) Method for measuring the depth of depressions, pits, bumps and scratches Annex B (Normative) Measurement of gas cylinder volume by using the water volume method Annex C (Normative) Assembly torques for gas cylinder valves