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GB/T 50938-2013 (GB/T50938-2013)

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GB/T 50938-2013: PDF in English (GBT 50938-2013)
GB/T 50938-2013
UDC
GB
NATIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Technical code for low temperature steel storage
tanks in petrochemical engineering
ISSUED ON. NOVEMBER 1, 2013
IMPLEMENTED ON. JUNE 01, 2014
Issued by. Ministry of Housing and Urban-Rural Development of the
People's Republic of China;
General Administration of Quality Supervision, Inspection
and Quarantine of the People's Republic of China.
NATIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Technical code for low temperature steel storage
tanks in petrochemical engineering
Responsibly compiled by. China Petroleum & Chemical Corporation
Approved by. Ministry of Housing and Urban - Rural Development of the
People's Republic of China
IMPLEMENTED ON. JUNE 1, 2014
China Plan Publishing House
2013, Beijing
Table of contents
Foreword ... 6 
1 General provisions ... 8 
2 Terms ... 9 
3 Basic requirements ... 11 
3.1 Tank type ... 11 
3.2 General requirements ... 15 
4 Material ... 18 
4.1 General requirements ... 18 
4.2 Metal tanks ... 18 
4.3 Concrete ... 23 
5 Metal parts design ... 25 
5.1 General requirements ... 25 
5.2 Primary and secondary container ... 27 
5.3 Vapor container ... 33 
5.4 Suspend roof ... 38 
5.5 Pipe ... 38 
5.6 Bottom of primary and secondary container ... 40 
5.7 Primary and secondary container connection ... 41 
5.8 Other requirements ... 41 
6 Concrete components design ... 42 
6.1 General requirements ... 42 
6.2 Liquid tightness ... 43 
6.3 Concrete tanks ... 44 
7 Insulation ... 47 
7.1 Performance characteristics, testing and selection of insulating materials ... 47 
7.2 Outer tank and protection of insulation ... 48 
7.3 Insulation design ... 49 
7.4 Installation ... 53 
8 Metallic parts construction, testing, inspection and acceptation ... 54 
8.1 General requirements ... 54 
8.2 Material management... 54 
8.3 Shop fabrication ... 56 
8.4 Site installation ... 57 
8.5 Welding ... 61 
8.6 Inspection ... 65 
9 Concrete components construction ... 71 
10 Testing... 73 
10.1 Hydrostatic test ... 73 
10.2 Pneumatic test ... 75 
Appendix A Primary physical properties of products ... 78 
Appendix B Design information ... 79 
Appendix C Seismic design ... 81 
Appendix D Testing for reinforced steel ... 82 
Appendix E Insulation materials and purpose ... 84 
Explanation of wording in this code ... 86 
List of quoted standards ... 87 
Foreword
This specification is, in accordance with the requirements of the requirements
of the original Ministry of Construction “Notice on the issuance of 2006
construction standards development and revision plan (second batch)"
(Jianbiao [2006] No.136), jointly compiled by the China Petrochemical
Corporation and Sinopec Luoyang Engineering Co., Ltd.
In the compilation process, the compilation group conducted extensive
investigation and study, conscientiously summed up the practical experience,
consulted the foreign advanced standards, collected opinions extensively,
completed the draft for approval, and finally finalized the draft.
This specification is divided into 10 chapters and 5 appendixes, AND the main
technical content includes. General provisions, terms, basic requirement,
materials, metal parts design, concrete components design, insulation, metallic
parts construction, testing, inspection and acceptation, concrete components
construction, testing, and so on.
As for this specification, the Ministry of Housing and Urban-Rural Development
is responsible for its management, the China Petrochemical Corporation is
responsible for daily management, AND the SINOPEC Luoyang Engineering
Co., Ltd is responsible for the interpretation of the specific technical contents.
Any opinions and suggestions on this specification in the implementation
process please send to SINOPEC Luoyang Engineering Co., Ltd. (Address.
No.27 Zhongzhou West Road, Luoyang City, Henan Province, Postal Code.
471003) for future reference during revision.
The responsible drafting unit, participating drafting unit, participating unit, main
drafters and the main examiners of this specification are as follows.
Responsible drafting units. China Petroleum & Chemical Corporation
SINOPEC Luoyang Engineering Co., Ltd
Participating drafting units. SINOPEC Nanjing Engineering Co., Ltd
China Petrochemical Engineering Construction Co.,
Ltd
Participating units. SINOPEC Fourth Construction Co., Ltd
Main drafters. Xu Maokun, Chen Chonggang, Li Hongbin, Wei Xiaohui, Wang
Songsheng; Zheng Xianglong, Huo Ruimin, Lai Jindong, Leng
Technical code for low temperature steel storage
tanks in petrochemical engineering
1 General provisions
1.0.1 This specification is hereby established to standardize the design and
construction of petrochemical steel low-temperature storage tanks.
1.0.2 This specification applies to the design and construction of the steel
vertical cylindrical aboveground single containment tank, double containment
tank and full containment tank which is used to store the hydrocarbons or
ammonia of boiling point 0 °C ~ - 165 °C AND for which the design pressure is
not more than 50 kPa.
This specification does not apply to thin-film tanks and primary tanks only using
prestressed concrete.
1.0.3 The petrochemical steel low-temperature storage tank shall, in addition to
the main tanks and its associated components as a whole, also be composed
of the following.
1 The connection of tanks and the external pipes shall include the following.
1) The groove end surface of the first circumferential joint of the welded
connection;
2) The end surface of the first threaded joint of the threaded connection;
3) The first flange sealing surface of the flanged connection;
4) The first sealing surface of the special connection or pipe connecti...
......
 
(Above excerpt was released on 2017-02-11, modified on 2021-06-07, translated/reviewed by: Wayne Zheng et al.)
Source: https://www.chinesestandard.net/PDF.aspx/GBT50938-2013