SY 0470-2000 Specification for construction and acceptance of petroleum and natural gas pipeline crossing projects
Some standard content:
Jun Oil and Gas Industry Standard of the People's Republic of China Code for coristruction and acceptance of oil and gas pipeline aerial crossing engineeringSY 0470--2000Editor: Sichuan Petroleum Administration Bureau Oil and Gas Field Construction Engineering CorporationApproval department: State Petroleum and Chemical Industry Bureau Petroleum Industry Press2000 BeijingMaterials. Inspection of accessories
Foundation construction
Construction measurement
Excavation of foundation pit
Reinforced concrete foundation construction
Masonry foundation construction
Steel pipe pile construction
Drilling and injection pile construction
4Tower construction
Manufacture and installation of steel tower
Reinforced concrete tower construction
5Assembly, welding and inspection of pipe sections
Pipe section welding and assembly
5.2 Pipeline welding·
5.3 Inspection of weld key quality
6Embedded pipes and compensators
Assembly and welding of embedded bent arms
6.2Manufacture and installation of compensators
Manufacture and installation of bridge deck steel structures·
Pipe bridge hoisting
Preparation of steel wire ropes
Main cable installation
8.3 Pipe bridge hoisting..
9 Other crossing types of construction
Pipeline pressure testing and cleaning
Anti-corrosion and thermal insulation
12 Project completion and acceptance
Explanation of standard words and terms
Annex to the Specification for Construction and Acceptance of Crossing Projects of Niu Petroleum and Natural Gas Pipelines
Explanation of clauses
Document of the State Administration of Petroleum and Chemical Industry
State Petrochemical Government (2000) No. 110
Notice on the Approval of 44 Oil and Gas Industry Standards Including "Onshore Oil Industry Safety Terminology" China National Petroleum Corporation:
The draft of 44 oil and gas industry standards including "Onshore Oil Industry Safety Terminology" submitted by your company for approval has been approved by our bureau and is now published. Standard name and number:
Recommended standard
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Specification for construction and acceptance of petroleum and natural gas pipeline crossing projects (replacing SY4070-93)
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The standard has been implemented since October 1, 2000. National Bureau of Petroleum and Chemical Industry
March 31, 2000
This specification is based on the requirements of the former China National Petroleum Corporation (98] CNPC Technical Supervision No. 33, edited by Sichuan Petroleum Administration Bureau Oil and Gas Construction Engineering Corporation, and revised the "Petroleum and Natural Gas Pipeline Crossing Project Construction and Acceptance Specification" $Y4070-93
This revision is based on summarizing the construction experience of pipeline crossing projects in recent years, consulting a large amount of relevant information, referring to the current national and petroleum industry standards and relevant regulations of the industry, and revising and supplementing some technical contents of the original specification. Supplement. During the revision process, we widely solicited opinions from relevant units and experts through both letter review and joint review, striving to achieve advanced technology, economic rationality, and ensure the quality of project implementation. This specification has been discussed and revised, and finally reviewed and approved by the Petroleum Engineering Construction Professional Standardization Committee together with relevant units.
The main contents of this specification include: General provisions: inspection of materials and accessories; foundation work: tower construction: assembly, welding and inspection of pipe sections: embedded bends and compensators: bridge deck steel structure production and installation: pipe bridge hoisting: other span types: pipeline pressure testing and cleaning support: anti-corrosion and thermal insulation: project change acceptance, etc. This specification This standard will replace SY4070-93 from the date of entry into force. This standard is proposed by China National Petroleum Corporation. This standard is under the jurisdiction of the Petroleum Engineering Construction Professional Standardization Committee. The main editor of this standard is Sichuan Petroleum Administration Bureau Oil and Gas Field Construction Engineering Corporation. The main drafters of this standard are Chen Zhengzhou and Zhu Zhengcheng. This standard is interpreted by Sichuan Petroleum Administration Bureau Oil and Gas Field Construction Engineering Corporation. This standard was first issued in September 1993, and this is the second revision. 1 General
1.0.1 In order to improve the construction level of oil and gas pipeline crossing projects, ensure project quality and construction safety, and reduce engineering Cost, this specification is formulated. 10.2 This specification applies to the construction and acceptance of onshore oil and natural gas pipeline crossings. It can also be used as a reference for the construction and acceptance of steel pipe crossings that transport other media: This specification is not suitable for oil and gas pipeline projects laid along existing bridges. 1.0.3 The classification of pipeline crossing projects shall comply with the provisions of Table 1.0.3. It only needs to meet one of the conditions of total span length and main span length. Table 1.0.3 Crossing project grade
Project grade
Total span length (m)
2100-<300
Main span length (m)
50～150
1.0.4 The construction of pipeline crossing projects shall comply with the relevant national regulations on water conservancy, rivers, shipping and environmental protection.
1.0.5 The construction and acceptance of oil and gas pipeline crossing projects shall not only comply with the design and this specification, but also comply with the provisions of the relevant national mandatory standards. 2 Inspection of materials and accessories
2.0.1 The materials, specifications and models of materials and accessories used in pipeline crossing projects must meet the design requirements. When materials are substituted, they must be agreed by the design, construction and supervision units, and a genuine material substitution order must be issued.
2.0.2 The performance indicators of materials and accessories must comply with the provisions of the corresponding current national standards or industry standards, and have factory quality certificates, certificates and instructions for use.
2.0.3 The certificates and quality certificates of materials and accessories used in the project should be checked, and physical warehouse acceptance should be carried out at the same time, and records should be kept. When there is doubt about its quality or the design requires re-inspection, it should be re-inspected and can only be used after passing the inspection. 2.0.4 Qualified materials and accessories should be marked and properly maintained. 2.0.5 The steel pipes used in the spanning project should be inspected for appearance before construction. There should be no defects such as cracks, wrinkles, heavy skin, and defects exceeding the allowable deviation of wall thickness. If there are pits, marks, flattening, and layers, they should be repaired or removed, but the strength of the steel should not be reduced after repair.
2.0.6 The welds of the seamed steel pipes should be inspected for appearance (self-viewing or using a magnifying glass) one by one according to the steel pipe manufacturing standards before anti-corrosion or assembly welding. If there are doubts about their quality, they should be reported to the supplier for processing.
The appearance of the steel section should be inspected before use, and its surface quality should meet the following requirements:
1 No cracks, interlayers, heavy wrinkles, folds, twists and other defects; 2 Surface rust, the depth of the pits should not exceed 0.5mmc The steel bars should have a factory quality certificate and test report. The surface of the steel bar or each roll (plate) steel bar should be marked. When entering the site, it should be inspected in batches according to the furnace batch number and diameter. Samples should be taken for physical and chemical index or mechanical property tests according to the design and the provisions of the current national standards. They can only be used after they meet the standards. -2
2.0.9 Before construction, the appearance of the steel wire rope should be inspected one by one. There should be no broken wires or twists. There should be no rust and indentation on the surface. 2.0.10 Each batch of cement must have a factory test report before it can enter the construction site. Unqualified or expired cement that is damp is strictly prohibited. Welding materials should be inspected according to the quality certificate and qualification certificate. The electrode coating should not be damp, cracked, detached or discolored. The anti-corrosion and thermal insulation materials used in the spanning project shall not be expired, deteriorated, damp, etc. 2.0.12
Precast reinforced concrete piles shall be inspected for appearance before construction, and honeycombs, cracks, corner drops and other defects shall not be repaired before inspection. The appearance quality shall comply with the provisions of the "Code for Construction and Acceptance of Foundation and Foundation Engineering" GBJ202. 2.0.14 The manufacture and inspection of engineering rigging shall comply with the design requirements and the provisions of the relevant national standards.
3 Foundation construction
3.1 Construction measurement
3.1. In addition to complying with the provisions of this code, the construction measurement shall also comply with the relevant provisions of the "Code for Engineering Measurement" GB50026.
3.1.2 After the design is handed over to the pile, the construction unit shall conduct the following construction measurements: 1 For the piles and piers at the midline position of the span delivered by the design unit or the construction unit. The triangulation base point piles and level point piles are re-measured, and the re-measurement data and design are checked.
2 Determine the center position of the anchor and tower foundation. 3 For the cross-center line position piles and pier position piles that may be buried, excavated or moved during construction, the water push point should be measured and displaced before construction, and the drawing should be noted and recorded. 3.1.3 The accuracy of the tower pier spacing measurement shall not be less than 110000. 31,4, When the triangulation method is used for measurement, there shall be no less than two triangulation baselines, and the baseline length shall not be less than 0.5-0.7 times the length of the cross axis. The baseline measurement accuracy shall not be less than 120000, and all internal angles of the triangulation network should be arranged between 30° and 100°. 3.1.5 During the construction process, the center line and elevation of the tower base, anchor pier, and pipe bridge shall be measured, and measurement records shall be made.
3.2 Foundation pit excavation
3.2.1 The excavation of the tower base and anchor pier foundation pit of the crossing project should be carried out according to the engineering geology, construction season, equipment capacity, construction period and design requirements, and refer to the relevant provisions of the "Technical Specifications for Highway Bridge and Culvert Construction" JTJ041, and adopt practical construction methods.
3.2.2 The size of the foundation pit should meet the requirements of foundation construction. The actual excavation size should be 0.5-1.0m wider than the design plane size on each side. For foundation pits with seepage, the bottom of the pit should be opened 4
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