GB/T 41319-2022 English PDF (GBT41319-2022)

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GB/T 41319-2022: Liquefied natural gas(LNG) fueling installations
GB/T 41319-2022
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 91.140
CCS P 47
Liquefied Natural Gas (LNG) Fueling Installations
液化天然气(LNG)加液装置
ISSUED ON: MARCH 9, 2022
IMPLEMENTED ON: OCTOBER 1, 2022
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 4 
1 Scope ... 5 
2 Normative References ... 5 
3 Terms, Definitions and Abbreviations ... 9 
3.1 Terms and Definitions ... 9 
3.2 Abbreviations ... 11 
4 Classification, Code and Model ... 12 
4.1 Classification ... 12 
4.2 Code ... 12 
4.3 Model ... 13 
5 Structures and Materials ... 13 
5.1 General Requirements ... 13 
5.2 Structures ... 15 
5.3 Welding ... 35 
5.4 Materials ... 35 
5.5 Electrical Control ... 47 
5.6 Combustible Gas Leakage Alarm Device ... 47 
6 Requirements ... 48 
6.1 Appearance ... 48 
6.2 Dimensions ... 48 
6.3 Non-destructive Testing ... 48 
6.4 Strength ... 49 
6.5 Air-tightness ... 49 
6.6 Performance of Cut-off Device ... 49 
6.7 Performance of Relief Device ... 49 
6.8 Electrical Safety Performance ... 49 
6.9 Explosion-proof Performance ... 50 
6.10 Cryogenic Nitrogen Test ... 50 
6.11 Operation Test of Whole Machine under Simulated Working Conditions ... 51 
7 Test Methods ... 52 
7.1 General Requirements ... 52 
7.2 Appearance Inspection ... 53 
7.3 Overall Dimensions ... 53 
7.4 Non-destructive Testing ... 53 
7.5 Strength Test ... 55 
7.6 Air-tightness Test ... 57 
7.7 Performance Test of Cut-off Device ... 58 
7.8 Performance Test of Relief Device ... 58 
7.9 Performance Test of Electrical Safety... 59 
7.10 Explosion-proof Performance Test ... 59 
7.11 Cryogenic Nitrogen Test ... 60 
7.12 Operation Test of Whole Machine under Simulated Working Conditions ... 60 
7.13 Material and Component Inspection ... 63 
8 Inspection Rules ... 63 
8.1 Inspection Classification ... 63 
8.2 Inspection Items ... 63 
8.3 Exit-factory Inspection ... 64 
8.4 Type Inspection ... 64 
8.5 Determination Rules ... 64 
9 Quality Certification Documents, Marking, Packaging and Transportation ... 64 
9.1 Quality Certification Documents ... 64 
9.2 Marking ... 66 
9.3 Packaging and Transportation ... 67 
Appendix A (normative) Cryogenic Nitrogen Test ... 68 
Bibliography ... 73 
Liquefied Natural Gas (LNG) Fueling Installations
1 Scope
This document specifies the classification, code and model, structure and materials,
requirements, test methods, inspection rules, quality certificate, marking, packaging and
transportation of liquefied natural gas (LNG) fueling installations.
This document is applicable to liquefied natural gas (LNG) fueling installations used in urban
LNG supply stations and automobile gas filling stations, etc. (hereinafter referred to as “fueling
installations”).
The liquefied natural gas (LNG) loading and unloading installations used in urban LNG supply
stations may take this as a reference.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in this text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 150 (all parts) Pressure Vessels
GB/T 191 Packaging - Pictorial Marking for Handling of Goods
GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method
GB/T 3098.6 Mechanical Properties of Fasteners - Stainless Steel Bolts, Screws and Studs
GB/T 3098.15 Mechanical Properties of Fasteners - Nuts Made of Stainless-steel
GB/T 3190 Chemical Composition of Wrought Aluminum and Aluminum Alloys
GB/T 3280 Cold Rolled Stainless Steel Plate, Sheet and Strip
GB/T 3797 Electrical Control Assemblies
GB/T 3836 (all parts) Explosive Atmospheres
GB/T 4208 Degrees of Protection Provided by Enclosure (IP code)
GB/T 4272 General Principles for Thermal Insulation Technique of Equipment and Pipes
GB/T 4437.1 Aluminum and Aluminum Alloy Extruded Tubes - Part 1: Seamless Tubes
JB/T 12624 Globe Valves and Check Valves for Liquefied Natural Gas
JB/T 12625 Ball Valves for Liquefied Natural Gas
JB/T 12665 Vacuum Insulated Cryogenic Pipe
JJF 1524 Program of Pattern Evaluation of Liquefied Natural Gas Dispensers
NB/T 47010 Stainless and Heat-resisting Steel Forgings for Pressure Equipment
NB/T 47013 (all parts) Nondestructive Testing of Pressure Equipment
NB/T 47014 Welding Procedure Qualification for Pressure Equipment
SH/T 3005 Design Specification for Instrumentation Selection in Petrochemical Industry
SH/T 3019 Design Code for Instrument Tubing and Wiring in Petrochemical Industry
SH/T 3097-2017 Specification for Design of Static Electricity Earthing in Petrochemical
Industry
SH/T 3521 Technical Code of Construction of Instrumentation Engineering for Petrochemical
Industry
SY/T 6503 Safety Specification of Combustible Gas Detection and Alarm System for
Petroleum and Natural Gas Engineering
TSG 21 Supervision Regulation on Safety Technology for Stationary Pressure Vessel
TSG 23 Regulation on Safety Technology for Gas Cylinder
TSG D0001 Pressure Pipe Safety Technology Supervision Regulation for Industrial Pressure
Pipe
TSG D7002 Pressure Piping Components Type Test Regulation
3 Terms, Definitions and Abbreviations
3.1 Terms and Definitions
The following terms and definitions are applicable to this document.
3.1.1 Liquefied natural gas; LNG
Liquefied natural gas refers to a colorless cryogenic liquid-state fluid primarily consisting of
methane, with possible traces of ethane, propane, nitrogen or other components commonly
found in natural gas.
[source: GB/T 19204-2020, 3.1]
3.1.2 LNG fueling installations
LNG fueling installations refer to a factory-assembled component combination device that
assembles all or part of the equipment, such as: LNG pump, LNG dispenser, metering
equipment, pipelines and accessories, safety release device, combustible gas alarm device and
monitoring device, etc., on a foundation, and can implement LNG fueling to LNG cylinders,
tanks or other storage equipment, and integrate the auxiliary functions of fueling, metering,
automatic control, safety monitoring and automatic alarm, etc.
3.1.3 LNG pump
LNG pump refers to a pump that conveys LNG liquid.
3.1.4 Pump tank
Pump tank refers to a tank composed of an inner container, an outer shell and a vacuum
insulation layer for placing immersion submersible pump.
3.1.5 LNG dispenser
LNG dispenser refers to a special-purpose equipment used for fueling LNG to vehicle LNG
storage cylinder, and with metering and pricing devices.
[source: GB/T 50156-2021, 2.1.36, modified]
3.1.6 Safety breakaway valve
Safety breakaway valve refers to a special-purpose safety protection device installed on LNG
dispenser, gas fueling (venting) column hose or loading and unloading arm, and can be
automatically disconnected under a certain external force, and with self-sealing function after
disconnection on both ends, which can prevent the hose or loading and unloading arm from
being pulled off, leading to leakage accidents.
[source: GB/T 50156-2021, 2.1.20, modified]
3.1.7 LNG pressure build-up (PBU) vaporizer
LNG pressure build-up (...