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NB/T 10355-2019 English PDF (NBT10355-2019)

NB/T 10355-2019 English PDF (NBT10355-2019)

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NB/T 10355-2019: Tube skid container

This standard applies to tube skid containers, which are composed of the following large-volume steel seamless gas cylinders connected to frames: a) The operating ambient temperature is -40 ~ 60; b) The nominal working pressure of the gas cylinder is 10 MPa ~ 30 MPa; the nominal working pressure of the gas cylinder used for filling oxygen shall not be greater than 20 MPa; c) The nominal water volume of the gas cylinder is 150 L ~ 4200 L; d) The filling medium is natural gas, hydrogen, oxygen, air, nitrogen, argon, helium, neon, krypton and other compressed gases.
NB/T 10355-2019
NB
ENERGY INDUSTRY STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 23.020.01
J 74
Tube skid container
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ISSUED ON: DECEMBER 30, 2019
IMPLEMENTED ON: JULY 01, 2020
Issued by: National Energy Administration
Table of Contents
Foreword ... 5
1 Scope ... 6
2 Normative references ... 6
3 Terms and definitions ... 8
4 Qualifications and responsibilities ... 9
5 Materials ... 11
6 Design ... 16
7 Safety accessories, instruments, loading and unloading accessories ... 28 8 Manufacturing ... 33
9 Test methods ... 39
10 Inspection rules ... 43
11 Signs, markings ... 45
12 Exit-factory documents ... 46
13 Storage and transportation ... 47
Appendix A (Normative) Special technical requirements for compressed natural gas cylinder containers ... 49
Appendix B (Normative) Risk assessment report ... 55
Appendix C (Normative) Wall thickness calculation of loading and unloading pipeline ... 57
Tube skid container
1 Scope
1.1 This standard specifies the materials, design, manufacturing, test methods, inspection rules, marking, exit-factory documents, storage and transportation requirements for tube skid containers.
1.2 This standard applies to tube skid containers, which are composed of the following large-volume steel seamless gas cylinders (hereinafter referred to as gas cylinders) connected to frames:
a) The operating ambient temperature is -40 ??C ~ 60 ??C;
b) The nominal working pressure of the gas cylinder is 10 MPa ~ 30 MPa; the nominal working pressure of the gas cylinder used for filling oxygen shall not be greater than 20 MPa;
c) The nominal water volume of the gas cylinder is 150 L ~ 4200 L;
d) The filling medium is natural gas, hydrogen, oxygen, air, nitrogen, argon, helium, neon, krypton and other compressed gases.
1.3 This standard applies to road, railway, water transport and to tube skid containers used for multimodal transport in these modes.
1.4 Gas cylinder containers, which have a nominal water volume of 150 L ~ 1000 L and a sum of nominal water volumes of each group of gas cylinders not exceeding 3000 L, shall also comply with the provisions of Appendix A.
1.5 This standard does not apply to the following tube skid containers: a) Filled with liquefied gas, dissolved gas, extremely toxic medium;
b) The gas cylinder is a filament-wound gas cylinder.
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) is applicable to this standard.
5.1.5 The material manufacturer shall provide the material quality certificate to the tube skid container manufacturer. The content of the material quality certificate shall be complete and clear; it shall be printed with a traceable information marking or label; it shall have the quality inspection seal of the material manufacturer.
5.1.6 When the tube skid container manufacturer obtains materials from non-material manufacturers, it shall obtain the original material quality certificate provided by the material manufacturer OR a copy stamped with the official seal of the material business organization and the signature (seal) of the responsible person.
5.1.7 The tube skid container manufacturer shall be responsible for the authenticity and consistency of the materials and material quality certificates obtained. 5.1.8 When imported pressure piping components are used, they shall comply with the requirements of corresponding safety technical specifications and standards. Pressure piping components imported for the first time shall be type tested by a pressure piping component type testing agency, which is approved by the State Administration for Market Regulation.
5.2 Gas cylinder
5.2.1 Cylinder body
5.2.1.1 Seamless steel pipes for cylinders shall not only comply with the requirements of TSG R0006 and GB/T 33145, but also comply with the requirements of this standard. 5.2.1.2 The cylinder body shall be made of a single seamless steel pipe; splicing is not allowed.
5.2.1.3 For seamless steel pipes used to fill hydrogen or natural gas and other medium that are prone to brittleness and stress corrosion, the chemical composition of the material shall meet the following requirements: the content of carbon (C) is not more than 0.350%, phosphorus (P) is not more than 0.020%, sulfur (S) is not more than 0.010%, the total content of sulfur and phosphorus (S + P) is not more than 0.025%. 5.2.1.4 Except for seamless steel pipes filled with medium other than those specified in 5.2.1.3, the chemical composition of the material shall meet the following requirements: the content of carbon (C) is not more than 0.050%, phosphorus (P) is not more than 0.020%, sulfur (S) is not more than 0.010%, the total content of sulfur and phosphorus (S + P) is not more than 0.025%.
5.2.1.5 The inner and outer surfaces of the steel pipe shall be free of defects such as cracks, folds, roll folds, separation layers, scarring. If there are defects, they shall be completely removed; the removed areas shall be smoothly transitioned; the actual wall thickness after removal shall not be less than the specified value.
5.2.1.6 Steel pipes shall be subjected to longitudinal and transverse ultrasonic testing one by one in accordance with the provisions of NB/T 47013.3-2015; the acceptance quality level shall not be lower than level I.
5.2.2 End plug
5.2.2.1 The end plug shall be made of forgings. When selecting 30CrMo or 35CrMo forgings, it shall comply with the requirements of NB/T 47008-2017; its level shall not be lower than level III. When selecting austenitic stainless steel forgings such as S30408, S30403, S31608, S31603, etc., it shall comply with the requirements of NB/T 47010- 2017; its level shall not be lower than level III.
5.2.2.2 The hardness of 30CrMo and 35CrMo forgings, after quenching and tempering heat treatment, shall be lower than the hardness of the cylinder after heat treatment. After -40 ??C Charpy impact test, the average impact energy absorption (KV2) of its three standard impact specimens is not less than 41J; the impact absorbed energy value of one specimen is allowed to be less than 41J but not less than 29J.
5.3 Pipeline
5.3.1 Loading and unloading pipelines
5.3.1.1 The pipes shall be made of austenitic stainless steel seamless steel pipes, such as S30403, S30408, S31603, S31608, etc.; meanwhile it shall comply with the requirements of GB/T 14976. The hydrogen filling medium shall use austenitic stainless steel seamless steel pipes, such as S31603 and S31608.
5.3.1.2 Pipe fittings shall be made of austenitic stainless steel forgings, such as S30403, S30408, S31603, S31608, etc.; meanwhile it shall comply with the requirements of NB/T 47010; the level shall not be lower than level III. The hydrogen filling medium shall use austenitic stainless steel forgings, such as S31603 and S31608. 5.3.2 Sewage pipe
Sewage pipes should be made of austenitic stainless steel seamless steel pipes, such as S30403, S30408, S31603, S31608, etc.; meanwhile it shall comply with the requirements of GB/T 14976.
5.3.3 Discharge pipe
The discharge pipe shall be made of stainless steel pipes, such as S30403, S30408, S31603, S31608, etc.; meanwhile it shall comply with relevant standards, such as GB/T 14976 or GB/T 12771.
5.3.4 Pneumatic pipeline
Pneumatic pipelines should be made of non-metallic materials that meet the usage requirements; their nominal pressure shall not be less than 0.8 MPa; they shall meet the inspection cycle of tube skid containers.
5.6.3 The sealing materials of end plugs and gas cylinders shall be made of non-metallic materials and comply with the following requirements:
a) When filling natural gas, hydrogen, nitrogen, argon, helium, neon, krypton and other medium, the O-ring shall be made of fluorine rubber, nitrile rubber or EPDM rubber;
b) Flat gaskets should be made of polytetrafluoroethylene;
c) The retaining ring should be made of polytetrafluoroethylene.
5.6.4 Metal seals and non-metal seals can be used for sealing between pipelines and valves, between pipelines and instruments. When filling natural gas, hydrogen, nitrogen, argon, helium, neon, krypton and other medium, non-metal sealing materials shall be nitrile rubber, butyl rubber, fluorine rubber, ethylene propylene rubber, polyurethane rubber, chloroprene rubber, etc.
5.6.5 When filling hydrogen and helium, polytetrafluoroethylene material shall not be used as the sealing material alone.
5.6.6 When filling oxygen and air, metal materials such as copper and copper alloy should be used as sealing materials.
5.7 Welding materials
5.7.1 The selection of welding materials shall consider the matching of the mechanical properties of the welded joint with the base metal; the tensile strength of the weld metal shall not be lower than the lower limit specified in the base metal standard. 5.7.2 The welding materials used for pressure components shall comply with the provisions of NB/T 47018.1 ~ NB/T 47018.4; it shall have clear and firm signs. 5.7.3 Welding materials for pressure components shall be subject to welding process qualification according to the requirements of NB/T 47014. It can only be used after passing the qualification.
5.7.4 The manufacturer shall establish and implement a system for the acceptance, re- inspection, storage, drying, distribution, and recycling of welding materials. 5.8 Overseas materials and new materials
When selecting overseas designation materials or new materials for gas cylinders and loading and unloading pipelines, they shall comply with the relevant requirements of TSG R0005 and TSG R0006.
5.9 Others
5.9.1 Outsourced parts shall comply with the provisions of corresponding national standards or industry standards; they shall have quality certification documents or product certificates.
5.9.2 Corner fittings shall comply with the requirements of GB/T 1835. After Charpy impact test at -40 ??C, the average impact absorbed energy (KV2) of the three standard impact specimens shall not be less than 21J; the impact absorbed energy of one specimen is allowed to be less than 21J but not less than 15J.
5.9.3 Bolts and nuts used for connection, such as support end plates and connecting flanges, shall be commercial grade or special grade fasteners. When commercial grade carbon steel or low alloy steel is selected, the strength of bolts shall not be lower than level 8.8; the strength of nuts shall not be lower than level 8.
5.9.4 Valves and instruments shall comply with the requirements of corresponding standards.
6 Design
6.1 General requirements
6.1.1 In addition to complying with the requirements of this standard, the design of tube skid containers shall also comply with relevant laws and regulations, safety technical specifications, national standards, industry standards.
6.1.2 The structure of the tube skid container, the connection between the gas cylinder and the frame, the arrangement of pipelines, safety accessories, instruments, loading and unloading accessories shall be safe and reliable; meanwhile it shall meet the usage requirements.
6.1.3 The same tube skid container shall use gas cylinders with the same material, nominal working pressure, nominal diameter, nominal water capacity.
6.1.4 When designing tube skid containers, appropriate protective measures shall be taken into consideration, to prevent damage caused by impact or overturning in the longitudinal and transverse directions or leakage of the filling medium. 6.1.5 The design load endured by tube skid containers shall be determined through calculation or testing.
6.1.6 Tube skid containers used in international multimodal transport shall comply with the requirements of relevant international conventions.
6.1.7 For tube skid containers used for railway transportation, the structural strength and stiffness of the prototype container shall be able to withstand the impact force of not less than 4 times the rated mass, which is multiplied by the acceleration of gravity b) Calculation of cylinder volume;
c) Calculation of the maximum filling capacity of gas cylinders;
d) Verification and calculation of bending stress of gas cylinders;
e) Verification and calculation of bending stress of gas cylinders under dynamic load; f) Calculation of cylinder deflection under dynamic load;
g) Verification and calculation of end plug thread strength;
h) Calculation of the safety relief capacity of gas cylinders and the relief area of overpressure relief devices:
i) Strength calculation of loading and unloading pipelines;
j) Calculation of pipeline safety valve discharge (when necessary);
k) Frame stress analysis and calculation;
1) Calculation of the structural strength of tie rods, support end plates, connecting flanges using bolts or frames under inertial force loads.
6.2.5 Design drawings, including at least general design drawings, gas cylinder drawings, piping system drawings, necessary parts drawings, etc.
6.2.5.1 The general design drawing shall at least indicate the following: a) Product name, model, main safety technical specifications and product standards that shall be followed in design and manufacturing;
b) Applicable modes of transportation, including railways, roadways, waterways or combined transportation of these modes of transportation, etc.:
c) Main working conditions, including working environment temperature, etc.; d) Main design parameters, including nominal working pressure of gas cylinders, design temperature, design pressure, minimum design metal temperature of loading and unloading pipelines, etc.;
e) Filling medium, including the medium number (UN number or CAS number), name, category (item), hazards, medium standard. If necessary, it shall also indicate the quality grade, components, harmful impurity content, etc., of the medium;
f) Main technical characteristics parameters, including rated mass, empty container mass, filling mass, nominal working pressure of the gas cylinder, nominal water volume of a single gas cylinder, total water volume, etc.;
g) The design service life of the gas cylinder (indicate the number of fatigue cycles of the gas cylinder if necessary);
h) Non-destructive testing requirements for loading and unloading pipelines; i) Gas cylinder's water pressure test requirements, pipeline pressure resistance test requirements, overall leakage test requirements;
j) Internal and external surface treatment and coating requirements of gas cylinders; k) Special manufacturing requirements, such as nitrogen or inert gas replacement requirements, etc.;
1) Models, specifications, performance parameters, connection methods of safety accessories, instruments, loading and unloading accessories, etc.;
m) The location of product nameplates and electronic nameplates;
n) Loading and unloading port orientation, specifications, connection methods; o) Painting and marking and labeling requirements;
p) Other relevant requirements stipulated in the regulations or normative documents of the industry authorities of the State Council, such as railways, highways or waterways.
6.2.5.2 The gas cylinder diagram shall at least include the following contents: a) Design document identification number of gas cylinder;
b) Main safety technical specifications and standards;
c) Gas cylinder body material, cylinder body design wall thickness, cylinder body size, cylinder mouth thread specifications and dimensions, etc.;
d) Technical characteristics table, chemical composition of cylinder materials, mechanical properties of cylinder materials after heat treatment, etc.; e) Non-destructive testing, heat treatment, pressure resistance test, internal and external surface treatment requirements of gas cylinders, etc.;
f) Steel stamp mark (including manufacturer code);
g) Design service life (indicate the number of fatigue cycles of cylinder if necessary). 6.2.5.3 The piping system diagram shall include at least the following contents: 6.3.1 The external dimensions and tolerances of tube skid containers shall comply with the provisions of GB/T 1413; the height can be reduced according to the arrangement of gas cylinders. When the external dimensions of tube skid containers exceed those specified in GB/T 1413 (such as over-length, over-width, etc.), they shall be designed, manufactured, inspected, accepted in accordance with the standards recognized by the industry authorities of the State Council; it shall be marked accordingly. 6.3.2 Any part of the tube skid container and various accessories shall not exceed the specified external dimensions.
6.3.3 The rated mass of tube skid containers shall comply with the provisions of GB/T 1413. When the rated mass exceeds the value specified in GB/T 1413, in addition to being designed, inspected, tested, marked according to the rated mass value, it shall also apply an overweight mark.
6.4 Medium
6.4.1 The classification, product name, number of the medium shall comply with the provisions of GB 6944 and GB 12268. The medium shall also comply with the provisions of the corresponding standards.
6.4.2 Natural gas shall comply with the following requirements:
a) Compressed natural gas for vehicles shall comply with the requirements of GB 18047;
b) Commercial natural gas shall comply with the provisions of category I and category II natural gas in GB 17820-2012.
6.4.3 Hydrogen shall comply with the provisions of GB/T 3634 (all parts). The hydrogen used in fuel cell vehicles shall comply with the provisions of the corresponding standards.
6.5 Load
6.5.1 The following loads shall be considered when designing tube skid containers: a) Internal pressure OR maximum internal and external pressure difference; b) Dynamic loads including inertial force loads during transportation;
c) The pressure load of the filling medium under its own weight, normal operation or inspection test conditions;
d) Forces during transportation or lifting;
e) The force exerted on connecting pipelines and other components;
f) Force caused by temperature gradient or thermal expansion;
g) Pressure during filling or unloading;
h) When the gas cylinder is connected to the support end plate and the hoop, the force of the support end plate, tie rod, pull strap or hoop and other supports or connectors;
i) Load during type test.
6.5.2 The inertial force load, which is endured by tube skid containers during transportation conditions, shall be converted into equivalent static force according to the following requirements:
a) Movement direction: 2 times the maximum mass multiplied by the acceleration of gravity;
b) Horizontal direction perpendicular to the direction of movement: The maximum mass times the acceleration of gravity (when the direction of movement is unclear, it is 2 times the maximum mass multiplied by the acceleration of gravity); c) Vertically upward: Maximum mass multiplied by acceleration of gravity; d) Vertically downward: 2 times the maximum mass multiplied by the acceleration of gravity.
Note 1: When calculating the inertial force load, which is endured by the gas cylinder during transportation, the maximum mass is the maximum allowable filling volume of the medium. Note 2: When calculating the inertial force load, which is borne by the connection between the gas cylinder and the frame d...

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