GB/T 19204-2020 in English
VALIDGeneral characteristics of liquefied natural gas
- Issued on:2020-06-02
- Implemented on:2020-12-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
Price(USD)：
$250.00
$243.00
$243.00
《GB/T 19204-2020液化天然气的一般特性》由TC355（全国石油天然气标准化技术委员会）归口，TC355SC1（全国石油天然气标准化技术委员会液化天然气分会）执行，主管部门为国家标准化管理委员会。
Introduction
Analysis of the core characteristics of liquefied natural gas
| Characteristic parameters | Typical range | Key influencing factors |
|---|---|---|
| Density | 420-470kg/m³ | Component, temperature (gradient 1.4kg/(m³·K)） |
| Boiling point | -166℃~-157℃ | Pressure (rate of change 1.25×10-4℃/Pa) |
| Viscosity | 1.0-2.0×10⁻⁴Pa·s | Temperature, hydrocarbon composition |
Safety risk prevention and control system
Low temperature injury protection: Contact with LNG requires special masks, leather gloves and tight protective clothing. Skin contact can cause cold burns, and environments below -10℃ may cause hypothermia.
Fire prevention and control: Dry powder fire extinguishers (potassium carbonate) are designated fire extinguishing equipment. Direct fire extinguishing with water is prohibited. Pool fire radiation needs to be covered with high expansion foam.
Fire prevention and control: Dry powder fire extinguishers (potassium carbonate) are designated fire extinguishing equipment. Direct fire extinguishing with water is prohibited. Pool fire radiation needs to be covered with high expansion foam.
Technical Specifications for Material Selection
| Material Type | Applicable Parts | Temperature Adaptability |
|---|---|---|
| Austenitic Stainless Steel | Storage Tanks, Pipelines | Anti-196℃ Embrittlement |
| 9% Nickel Alloy | Storage Tank Body | Ultra-low Temperature Toughness |
| Polytetrafluoroethylene | Seals | Chemical Stability |
Standard Evolution and Technological Innovation
Compared with the 2003 version of the standard, GB/T 19204-2020 Main upgrades:
1. Added definitions of terms such as rollover and BLEVE
2. Introduced domestic LNG example component data (3 new cases in Table 1)
3. Revised the evaporative gas diffusion model and improved the QRA analysis method
4. Updated the material list and added new building materials such as prestressed concrete
Implementation suggestions
Storage tank management: LNG from different sources should be stored in separate tanks, the nitrogen content should be controlled below 1%, and the density should be monitored regularly to prevent stratification.
Emergency response: Establish a three-level response mechanism for LNG leaks, and equip with infrared detectors to monitor the gas diffusion range in real time.
Design verification: The pressure system needs to verify the temperature stress through flexible analysis, and the flange connection requires special anti-leakage design.
Emergency response: Establish a three-level response mechanism for LNG leaks, and equip with infrared detectors to monitor the gas diffusion range in real time.
Design verification: The pressure system needs to verify the temperature stress through flexible analysis, and the flange connection requires special anti-leakage design.
Sample only — not a preview of GB/T 19204-2020
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