GB/T 18442.1-2011 (GB/T 18442.1-2019 Newer Version) PDF English
Search result: GB/T 18442.1-2011 (GB/T 18442.1-2019 Newer Version)
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Name of Chinese Standard | Status |
| GB/T 18442.1-2019 | English | 135 |
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Static vacuum insulated cryogenic pressure vessels -- Part 1: General requirements
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| GB/T 18442.1-2011 | English | 70 |
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Static vacuum insulated cryogenic pressure vessel -- Part 1: General requirements
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| GB 18442-2001 | English | 879 |
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Cryo-insulation pressure vessels
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GB/T 18442.1-2011: PDF in English (GBT 18442.1-2011) GB/T 18442.1-2011
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 23.020.40
J 76
Partially replacing GB 18442-2001
Static Vacuum Insulated Cryogenic Pressure Vessel -
Part 1. General Requirements
ISSUED ON. NOVEMBER 21, 2011
IMPLEMENTED ON. MAY 1, 2012
Jointly issued by. General Administration of Quality Supervision,
Inspection and Quarantine (AQSIQ);
Standardization Administration (SAC) of the People's
Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 6
4 General Requirements ... 8
Foreword
"Static Vacuum Insulated Cryogenic Pressure Vessel" (GB/T 18442) comprises 6 parts.
- Part 1. General Requirements;
- Part 2. Material;
- Part 3. Design;
- Part 4. Fabrication;
- Part 5. Inspection and Test;
- Part 6. Safety Device Requirements.
This is the first part of GB/T 18442.
This part refers to "Cryogenic Vessels - Static Vacuum-insulated Vessels Part 1.
Design, Fabrication, Inspection and Tests" (ISO 21009-1.2008) (English edition).
This part replaces "Scope" (Chapter 1), "General Requirements" (Chapter 3) and
partial contents in "Cryo-insulation Pressure Vessels" (GB 18442-2001).
Compared with GB 18442-2001, the changes in this part are as follows.
- Application scope and inapplicable scope were defined;
- Model preparation method was cancelled.
This part was proposed by and shall be under the jurisdiction of the National Technical
Committee on Boilers and Pressure Vessels of Standardization Administration of China
(SAC/TC 262).
Drafting organizations of this part. China Special Equipment Inspection and Research
Institute, China International Marine Containers (Group) Co., Ltd., Shanghai Gas
Industry Association, Shanghai Huayi Group Equipment Engineering Co., Ltd.,
Zhangjiagang CIMC Sanctum Cryogenic Equipment Co., Ltd. and Shanghai Jiaotong
University.
Chief drafting staffs of this part. Shou Binan, Zhou Weiming, Sun Hongli, Chen Zhaohui,
Tang Jiaxiong, Pan Junxing, Gu Anzhong, Teng Junhua and Shi Fengping.
Static Vacuum Insulated Cryogenic Pressure Vessel -
Part 1. General Requirements
1 Scope
1.1 This part specifies the basic fabrication requirements of static vacuum insulated
cryogenic pressure vessel (hereinafter referred to as "cryogenic vessel").
1.2 This part is applicable to the cryogenic vessel in the following scope.
1.2.1 Operating pressure is greater than or equal to 0.1MPa (static pressure of liquid
column), and arithmetic product of operating pressure and geometric volume is greater
than or equal to 2.5MPa·L.
1.2.2 Inner vessel and outer shell are steel structure.
1.2.3 Cryogenic vessel with vacuum insulation, vacuum powder insulation, vacuum
fiber insulation or high vacuum multilayer insulation.
1.3 This part is inapplicable to the cryogenic vessel in the following scope.
1.3.1 Spherical cryogenic vessel.
1.3.2 Piled up insulated cryogenic vessel.
1.3.3 Movable type cryogenic vessel.
1.3.4 Cryogenic vessel with storing normal boiling point lower than -19℃.
1.3.5 Cryogenic vessel with specific requirements for military purpose.
2 Normative References
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendment) applies.
The space of insulated layer is filled with multi-pore particle thermal insulation materials,
and the insulation mode is vacuumizing.
3.4 Vacuum fiber insulation
The space of insulated layer is filled with fibrous insulant, and the insulation mode is
vacuumizing.
3.5 Vacuum insulation
Thermal insulation materials are filled or not filled in the space of insulated layer, and
it is the general term of insulation mode by vacuumizing. Thermal insulation materials
are referred to powder, fiber, multilayer and multi-screen in multilayer materials.
3.6 Operating pressure
In normal operating conditions, it is the maximum pressure which may be reached at
the top of vessel (gauge pressure), MPa.
3.7 Design pressure
It is the set maximum pressure on the top of vessel. It is regarded as the basic designed
loading-conditions of vessel with the corresponding design temperature, its value is
greater than or equal to the operating pressure of vessel, MPa.
3.8 Design temperature
The set metal temperature of unit (the average temperature along metal section of unit)
in normal operating condition, the design temperature together with design pressure
are regarded as designed loading-conditions, .
3.9 Static evaporation rate
Where the vacuum insulated cryogenic pressure vessel in specified filling rate reached
thermal balance, the percentage of cryogenic liquid mass lost in 24h natural
evaporation and cryogenic liquid mass in effective volume of inner vessel. It is
converted as the evaporation rate in standard atmosphere pressure (1.01325×105Pa)
and ambient temperature (20℃), %/d.
3.10 Specified filling rate
Where the liquid-storing quantity reached the highest liquid level in design requirement,
it is the ratio of the liquid volume in vessel and geometric volume of inner vessel.
calculation for supporting structure and relief capacity calculation for safety relief
device are at least included);
b) Design drawing (general plan, flow drawing of attached piping are at least
included, basic condition shall be also provided where necessary);
c) Design instruction;
d) Technical requirements for manufacturing;
e) Installation, application and maintenance instruction;
f) Risk estimation report (where the relevant laws and regulations or design client
requires).
4.5.3 Design organization shall save all the vessel design documents within design
service life of vessel.
4.5.4 General design drawing and design calculation book shall be covered with the
seal about design organization qualification for pressure vessel.
4.5.5 The following content shall be noted on the general design drawing or the vessel.
a) The product name, model and category of vessel as well as the main laws and
regulations and standard for design and manufacture.
b) Operating condition, the operating pressure, operating temperature, medium
toxicity and explosion hazard degree are included;
c) Design conditions including design temperature, design load (all the loads
including pressure shall be taken into consideration), corrosion allowance,
welding joint coefficient and natural conditions. Limitation content of corrosive
medium shall be noted on the storing vessel which is with stress corrosion
tendency.
d) Design life (the cycle times shall be noted on fatigue vessels);
e) Material designation and standard of main pressure units;
f) Calculated thickness or design thickness of inner tube structure and inner head;
g) Geometric volume and effective volume of inner vessel;
h) Specified filling rate;
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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