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GB/T 20603-2023: Refrigerated light hydrocarbon fluids - Sampling for liquefied natural gas
Status: Valid GB/T 20603: Evolution and historical versions
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Refrigerated light hydrocarbon fluids - Sampling for liquefied natural gas
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GB/T 20603-2023
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| GB/T 20603-2006 | English | 599 |
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Refrigerated light hydrocarbon fluids -- Sampling of liquefied natural gas -- Continuous method
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GB/T 20603-2006
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PDF similar to GB/T 20603-2023
Basic data | Standard ID | GB/T 20603-2023 (GB/T20603-2023) | | Description (Translated English) | Refrigerated light hydrocarbon fluids - Sampling for liquefied natural gas | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | E24 | | Classification of International Standard | 75.060 | | Word Count Estimation | 22,255 | | Date of Issue | 2023-12-28 | | Date of Implementation | 2024-04-01 | | Older Standard (superseded by this standard) | GB/T 20603-2006 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 20603-2023: Refrigerated light hydrocarbon fluids - Sampling for liquefied natural gas---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 75:060
CCSE24
National Standards of People's Republic of China
Replace GB/T 20603-2006
Sampling of frozen light hydrocarbon fluids LNG
Published on 2023-12-28
2024-04-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Sampling method 2
4:1 Continuous sampling 2
4:2 Intermittent sampling 4
4:3 Spot sampling 5
5 General requirements 7
5:1 General 7
5:2 Continuous sampling 8
5:3 Intermittent sampling 8
5:4 Spot sampling 8
6 devices 8
6:1 Materials 8
6:2 Sampling probe 8
6:3 LNG sample vaporizer 9
6:4 Gas sample container 9
6:5 Continuous sampling back-end device 9
6:6 Intermittent sampling back-end device 9
6:7 Sampling back-end device 10
7 Sampling Step 10
7:1 Continuous sampling 10
7:2 Intermittent sampling 11
7:3 Spot sampling 11
8 Sampling report11
8:1 General requirements 11
8:2 Continuous sampling 12
8:3 Intermittent sampling 12
8:4 Spot sampling 12
Appendix A (informative) Calculation example of subcooling 13
A:1 Original parameters13
A:2 Calculation method 13
Appendix B (informative) Calculation method for gas phase container and dosing device volumes 15
B:1 Calculation method of gas phase container volume15
B:2 Calculation method of volume of dosing device15
Appendix C (informative) LNG sample status determination 16
Reference 17
Figure 1 Continuous sampling system flow (example 1) 3
Figure 2 Continuous sampling system flow (example 2) 4
Figure 3 Intermittent sampling system flow 5
Figure 4 Spot sampling system flow (example 1) 6
Figure 5 Spot sampling system flow (example 2) 7
Figure 6 Sampling period 7
Figure 7 Normal pressure floating piston sample container 10
Figure A:1 Enthalpy of saturated liquid14
Figure C:1 LNG gas-liquid phase diagram 16
Table C:1 Bubble point and dew point temperatures of typical LNG lean and rich liquids under different pressures16
Foreword
This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents"
Drafting:
This document replaces GB/T 20603-2006 "Continuous Sampling Method for Refrigerated Light Hydrocarbon Fluid Liquefied Natural Gas" and is consistent with GB/T 20603-
Compared with:2006, in addition to structural adjustments and editorial changes, the main technical changes are as follows:
a) Added requirements for back-end devices for intermittent sampling and spot sampling (see 6:6 and 6:7);
b) Added sampling step requirements for intermittent sampling and spot sampling (see 7:2 and 7:3);
c) Added sampling reporting requirements for intermittent sampling and spot sampling (see 8:3 and 8:4):
Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:
This document is proposed and coordinated by the National Natural Gas Standardization Technical Committee (SAC/TC244):
This document was drafted by: Natural Gas Research Institute of Southwest Oil and Gas Field Branch of China National Petroleum Corporation, PetroChina
Co:, Ltd: Natural Gas Sales Branch, PetroChina Jiangsu LNG Co:, Ltd:, CNOOC Gas and Power Group Co:, Ltd:,
Shanghai Ruiyu Fluid System Co:, Ltd:, Sichuan Provincial Product Quality Supervision, Inspection and Testing Institute, National Pipeline Network Group United Pipeline Co:, Ltd: West
East-East Gas Transmission Branch, National Petroleum and Natural Gas Pipeline Network Group Co:, Ltd: General Institute of Science and Technology Branch, CNOOC Energy Development Co:, Ltd:
Engineering Technology Branch of the Company, Institute of Chemistry of China Academy of Testing Technology, Southwest Petroleum University, and Beijing Kailong Analytical Instrument Co:, Ltd:
The main drafters of this document: Zhu Huadong, Sun Qi, Hu Benyuan, Liu Bing, Wang Lijin, Gao Yanwei, Wu Yu, Han Xinqiang, Cai Li, Li Xiaohong, Zhang Peiying,
Wu Yan, Mao Jiawei, Zheng Chuanbo, Zhao Yulong, Shui Leilei, Pan Yi, Deng Fanfeng, Xing Nan, Yin Hongchao, Liu Rong, Xing Deli, Xu Hui:
This document was first published in:2006 and this is the first revision:
Sampling of frozen light hydrocarbon fluids LNG
1 Scope
This document specifies the sampling methods when liquefied natural gas (LNG) is transported through pipelines, including continuous sampling, intermittent sampling and spot sampling
method:
This document is applicable to liquefied natural gas sampling at small LNG stations such as large LNG receiving stations, LNG factories, filling stations, and gas filling stations:
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document:
GB/T 13609 Guidelines for natural gas sampling
3 Terms and definitions
The following terms and definitions apply to this document:
3:1
liquefied natural gas
An inert gas consisting primarily of methane and may contain small amounts of ethane, propane, butane, nitrogen, or other components commonly found in natural gas:
Color cryogenic liquid fluid:
[Source: GB/T 8423:3-2018,2:1:14]
3:2
continuous samplingcontinuoussampling
A sampling method that continuously removes samples from the sample source during the entire period of stable transportation:
3:3
intermittent samplingintermittentsampling
A sampling method that draws gasified LNG at predetermined intervals or at predetermined flow intervals:
3:4
spotsampling
A sample of a specified volume is collected from the LNG flow path at a specified time and place:
3:5
subcooling
Lowers the temperature of LNG below its boiling point at a given pressure:
3:6
degreeofsubcooling
The enthalpy change of LNG from the boiling point to the subcooling point at a given pressure:
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