In the process of revising this specification, the specification compilation team made extensive investigation and study, conscientiously summed up practical experience, consulted relevant international standards and advanced foreign standards, solicited opinions extensively, revised the specification, and finalized it after review.
This specification is divided into 10 chapter and 1 appendix. The main technical contents are: general rules, terms and symbols, basic provisions, inspection of pipeline components and materials, pipeline processing, pipeline welding and post-weld heat treatment, pipeline installation, pipeline inspection, inspection and test, pipeline purging and cleaning, and project handover.
The main technical contents of the revision of this specification are:
In 1, the inapplicable scope has increased the pipelines of oil, natural gas, geothermal and other exploration and production devices, pipelines for heating, ventilation and air conditioning, and pipelines with non-circular sections.
2. Added "Symbol" section.
3. The regulation of pipeline classification has been added.
4. The range of materials for spectral analysis of pipeline components is increased.
5. Provisions on setting pressure adjustment and sealing test of safety valve have been added.
6. General technical requirements for manufacturing miter elbows, welded flange joints and supports and hangers have been added.
7. Some general technical requirements of "welding" have been deleted. The welding requirements of flange connection and branch pipe connection are increased.
8. General technical requirements for installation of zirconium nonferrous metal pipelines, jacketed pipes and valves have been added.
9. Technical grade requirements for radiographic inspection and ultrasonic inspection of welds have been added.
10 added "degreasing" part.
The terms marked in bold in this specification are mandatory and must be strictly implemented.
The Ministry of Housing and Urban-Rural Development is responsible for the management and interpretation of the mandatory provisions of this Code, the Chemical Branch of China Engineering Construction Standardization Association is responsible for daily management, and the National Chemical Construction Standardization Management Center is responsible for the interpretation of specific technical contents. If you have any comments or suggestions during the implementation of this specification, please send them to the National Chemical Construction Standardization Management Center Station (Address: Room Renhe Business 1- 107, No.28 Huai 'an East Road, Qiaodong District, Shijiazhuang City, Hebei Province) for future reference.
Editor-in-chief, participating units, main drafters and main reviewers of this specification:
Editor-in-Chief: China Petrochemical Survey and Design Association.
China chemical engineering 3 rd construction co., ltd
Participating unit: National Chemical Construction Standardization Management Center Station
China Petrochemical Group No.5 Construction Company
China Petroleum Jilin Chemical Industry Construction Company
China Ye Er Group Co., Ltd. Pipeline Railway Engineering Company
Jilin Institute of Chemical Technology
Shandong electric power construction first engineering company
China machinery industry construction engineering company
China nuclear industry Eelsen construction co., ltd
Huisheng Engineering (China) Co., Ltd.
Ameike Engineering Consulting (Shanghai) Co., Ltd.
Main drafters: Xia, Zhang Yongming, Yang Hui, Hu,.
Li Gongfu and Zhang Yongguang are in Zhao Hongmei, Chengjia, Dajiangshan.
Lu Tian Yan Zuqing
Examiners: Li Bainian, Ge, Xu, Tan, Li Tianguang and Li Xinhao.
Ji Wang Jiansheng Wu Zhenping Sun Yun
Zhang Ximin was in Chen Hongzhang.