GB/T 44457-2024 in English
VALIDHydrogen storage pressure vessel used in hydrogen refueling station
- Issued on:2024-08-23
- Implemented on:2025-03-01
- File Format:PDF
- Delivery:Within 1 day
$443.00
《GB/T 44457-2024加氢站用储氢压力容器》由TC262（全国锅炉压力容器标准化技术委员会）归口，主管部门为国家标准委。
Introduction
Core Interpretation of the National Standard for Hydrogen Storage Pressure Vessels
The GB/T 44457-2024 standard was proposed by the National Technical Committee for Boiler Pressure Vessels Standardization and jointly drafted by 16 units including Zhejiang University. It specifies the full life cycle technical requirements for hydrogen storage containers used in hydrogen refueling stations.
Key parameter application range
| Container type | Design pressure range(MPa) | Temperature range(℃) |
|---|---|---|
| Spun seamless hydrogen storage container | 41-100 | -40~85 |
| Austenitic stainless steel lined container | 17-100 |
Key technical requirements of materials
Key indicators of chromium-molybdenum steel
- Chemical composition control: P≤0.015%, S≤0.008%, total harmful elements≤0.025%
- Mechanical properties: -40℃ impact absorption energy ≥47J, hydrogen environment fracture toughness KIHH≥50MPa·m1/2
- Special requirements: non-metallic inclusion rating A fine series ≤1.5, grain size ≥7
Special provisions for austenitic stainless steel
Nickel content>12%, nickel equivalent ≥28.5%, ferrite display content ≤0.2%, and welded joints are subject to slow strain rate tensile test in hydrogen environment.
Innovative design specifications
Dual-track system for fatigue assessment
- Design fatigue curve method: Applicable to cycles <109 times, using a special curve for hydrogen environment
- Fatigue crack growth analysis method: The initial crack depth a0≥0.5mm is required, and the critical crack size needs to be calculated
Formula for judging leakage before explosion
Axial-radial cracks must meet the following requirements at the same time:
① Kf(0.8t) < KIHH
② 0.2t <
Inspection and testing system
Three-level inspection mechanism
- Material re-inspection: Chromium-molybdenum steel requires hydrogen compatibility test (3 batches)
- Process inspection: The certification ring is heat treated in the furnace, and the sampling position is shown in Figure 3/4
- Factory test: Helium leak rate ≤5×10-7Pa·m3/s
Special detection technology
Using phased array ultrasonic testing (NB/T 47013.15) To verify the initial crack detection capability, the inner surface must be inspected using a recordable endoscope.
Standard Implementation Recommendations
Design Phase
It is recommended to use the elastic-plastic analysis method for plastic collapse assessment, especially for containers with Do/Di≥1.25.
Manufacturing Phase
Establish a material-process-testing associated database, the storage period should be ≥ the design service life, and it is recommended to use blockchain evidence storage technology.
Operation and Maintenance Phase
Note the standard clause 4.2.2.1.2: Changes in the use conditions must obtain the written consent of the original design unit, and the changes must be fully recorded.
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 150.2-2024 in English
Pressure vessels—Part 2：Materials
2024-07-24 -
GB/T 20663-2006/XG1-2008 in English
Bladder type accumulators, includes Amendment 1
2007-03-26 -
GB/T 16749-2018 in English
Bellows expansion joints for pressure vessel
2018-09-17 -
GB/T 17926-2022 in English
Compressed natural gas cylinder valve for vehicle
2022-03-09 -
GB 8335-2011 in English
Special threads for gas cylinders
2011-12-30 -
GB/T 20663-2026 in English
Accumulators
2026-01-28 -
GB/T 30579-2022 in English
Damage modes identification for pressure equipments
2022-03-09 -
GB/T 25198-2023 in English
Heads for pressure vessels
2023-08-06 -
GB/T 12137-2025 in English
Methods for leakage test of gas cylinders
2025-08-29 -
GB/T 33145-2023 in English
Large capacity seamless steel gas cylinders
2023-05-23
