SY/T 4214-2024 Code for quality acceptance ofoil and gas construction engineeringOil and gas field nonmetallic pipeline project English, Anglais, Englisch, Inglés, えいご
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ICS
E
Professional standard of the People's Republic of China
SY/T 4214-2024
Replaces SY/T 4214-2017
Code for quality acceptance of oil and gas construction engineering Oil and gas field nonmetallic pipeline project
石油天然气建设工程施工质量验收规范 油气田非金属管道工程
(English Translation)
Issue date: 2024-12-25 Implementation date: 2025-06-25
Issued by National Development and Reform Commission, P.R.C
Contents
1 General provisions
2 Terms
3 Basic requirements
4 Inspection, acceptance and storage of materials
4.1 General requirements
4.2 Inspection and acceptance of other materials
4.3 Storage of materials
5 Pipes cutting and processing
5.1 General requirements
5.2 Dominant items
5.3 General items
6 Installation of thermoplastic pipes
6.1 General requirements
6.2 Installation of polyethylene pipes
6.3 Pipe installation of unplasticized polyvinyl chloride and chlorinated polyvinyl chloride
7 Installation of high-pressure fiberglass pipes
7.1 General requirements
7.2 Dominant items
7.3 General items
8 Installation of thermoplastic lined fiberglass composite pipes
8.1 General requirements
8.2 Dominant items
8.3 General items
9 Installation of steel frame reinforced polyethylene Composite pipes
9.1 General requirements
9.2 Dominant items
9.3 General items
10 Installation of steel frame reinforced plastic composite continuous pipe
10.1 General requirements
10.2 Dominant items
10.3 General items
11 Installation of fiber reinforced thermoplastic composite Continuous pipes
11.1 General requirements
11.2 Installation of flexible composite high- pressure conveying pipes
11.3 Installation of reinforced ultra- high molecular weight polyethylene composite continuous pipes
11.4 Instalation of coiled reinforced plastic pipes
12 Installation of reinforced MC nylon pipes and nylon-steel Composite pipes
12.1 General requirements
12.2 Dominant items
12.3 General items
13 Installation of process pipelines in station
13.1 General requirements
13.2 Dominant items
13.3 General items
14 Installation of pipeline supports and accessories
14.1 General requirements
14.2 Dominant items
14.3 General items
15 Pipeline insulation and joint coating
15.1 General requirements
15.2 Insulation
15.3 joint repair
16 Excavation, laying and backfilling of pipeline trenches
16.1 General requirements
16.2 Excavation of pipeline trenches
16.3 Pipeline laying
16.4 Pipeline backfilling
17 Pressure test and blowing, cleaning of pipeline system
17.1 General requirements
17.2 Dominant items
17.3 General items
18 Handover&acceptance
Appendix A Connection method for non-metallic pipelines
Appendix B Quality acceptance record of inspection batch for non-metallic pipeline engineering
Appendix C Verification recond of quality control data for non-metallic pipeline engineering
Appendix D Apparatus used for irspecting engineering quality
Explanation of wording in this code
List of quoted standards
Addition: Explanation of provisions
1 General Provisions
1.0.1 This code is formulated to strengthen the quality management of petroleum and natural gas construction projects, unify the construction quality acceptance requirements for non-metallic pipeline projects, and ensure project quality.
1.0.2 This code applies to the construction quality acceptance of new construction, renovation, and expansion projects for non-metallic pipelines in oil and gas field surface construction projects, including thermoplastic pipes (including polyethylene pipes, unplasticized polyvinyl chloride pipes, chlorinated polyvinyl chloride pipes), high-pressure fiberglass line pipes, thermoplastic lined glass fiber reinforced plastics composite pipes, steel skeleton reinforced polyethylene composite pipes, steel skeleton reinforced plastic composite coiled pipes, fiber reinforced thermoplastic composite coiled pipes (including flexible composite pipes for high pressure transmission, fiber tape reinforced ultra-high molecular weight polyethylene coiled pipes, spoolable reinforced thermoplastic pipes), reinforced monomer casting nylon pipes, and nylon-steel composite pipes.
1.0.3 This code shall be used in conjunction with the current national standard "Unified Standard for Construction Quality Acceptance of Petroleum and Natural Gas Engineering" GB/T 51317.
1.0.4 The construction quality requirements specified in the technical documents and contract documents adopted for oil and gas field non-metallic pipeline construction projects shall not be lower than the provisions of this code.
1.0.5 In addition to complying with this code, the construction quality acceptance of oil and gas field non-metallic pipeline projects shall also comply with current relevant national standards.
2 Terms
2.0.1 thermoplastic pipe
A pipe product made from thermoplastic materials characterized by softening when heated and hardening when cooled.
2.0.2 polyethylene (PE) pipe
A thermoplastic pipe produced by an extrusion process using a compound primarily made of polyethylene resin, with additives such as antioxidants, pigments, and UV stabilizers.
2.0.3 unplasticized poly (vinyl chloride) (PVC-U) pipe
A pipe produced by extrusion using a compound primarily made of polyvinyl chloride (PVC) resin, with additives required to improve physical, mechanical, and processing properties.
2.0.4 chlorinated poly (vinyl chloride) (PVC-C) pipe
A pipe produced by extrusion using a chlorinated polyvinyl chloride (PVC-C) compound primarily made of PVC-C resin, with necessary additives to enhance its properties and processing performance.
2.0.5 high-pressure fiberglass line pipe
A pipe made by continuously winding and curing E-glass fiber reinforcement with epoxy resin and hardener as the matrix.
Note: Based on the type of hardener used, high-pressure fiberglass line pipes mainly include acid anhydride-cured and aromatic amine-cured types, with pressure ratings ranging from
3.45 MPa to 34.5 MPa.
2.0.6 steel skeleton reinforced polyethylene composite pipes
Pipes composed of an inner lining layer and outer protective layer of polyethylene resin, with a middle layer of a steel skeleton (such as welded steel wire skeleton, expanded steel mesh skeleton, or spirally wound steel wire skeleton), formed through a specific composite process.
Note: Includes three types: steel wire welded skeleton reinforced polyethylene composite pipes, steel mesh skeleton reinforced polyethylene composite pipes, and steel wire wrapping skeleton reinforced polyethylene composite pipes.
2.0.7 steel wire welded skeleton reinforced polyethylene composite pipes
Pipes formed by continuous extrusion and composite process, with an inner lining layer and outer protective layer of polyethylene resin, and a middle layer of a mesh steel skeleton formed by continuous winding and welding of steel wires.
2.0.8 steel mesh skeleton reinforced polyethylene composite pipes
Pipes formed by continuous extrusion and composite process, with an inner lining layer and outer protective layer of polyethylene resin, and a middle layer of a tubular skeleton formed by welding perforated steel mesh, also known as perforated steel skeleton reinforced polyethylene composite pipes.
2.0.9 steel wire wrapping skeleton reinforced polyethylene composite pipes
Composite pipes where the reinforcement layer (formed by left and right helical winding of coated high-strength steel wires into a mesh skeleton) is bonded to the medium conveying layer and the outer protective layer using a special hot-melt adhesive, with polyethylene resin used for the inner lining and outer protective layers.
2.0.10 thermoplastic lined glass fiber reinforced plastics composite pipes
Composite pipes formed by continuously winding fibers pre-impregnated with thermosetting resin onto an extruded thermoplastic inner liner pipe, followed by heating and curing.
2.0.11 steel skeleton reinforced thermoplastic resin coiled composite pipe
Pipes formed by continuous composite process, with an outer protective layer and medium conveying layer of polyethylene or cross-linked polyethylene, and a reinforcement layer of a continuously woven steel wire skeleton or a continuously spirally wound steel strip skeleton.
2.0.12 fiber reinforced thermoplastic coiled composite pipes
Pipes formed by continuous composite process, with an inner liner layer and outer protective layer of thermoplastic plastic, and a reinforcement layer of bidirectionally wound or braided fibers.
2.0.13 flexible composite pipe for high pressure transmission
A pipe produced by reinforcing a thermoplastic pipe through winding, braiding, fusion bonding, or other methods using continuous non-metallic fiber strands (tapes) as reinforcement, with pressure ratings ranging from 2.5 MPa to 32 MPa.
2.0.14 fiber tape reinforced ultra-high molecular weight polyethylene coiled pipe
A continuous pipe made by combining fiber-reinforced tape with thermoplastic plastic. The pipe typically has a three-layer structure: an inner layer of ultra-high molecular weight polyethylene or modified ultra-high molecular weight polyethylene, a middle fiber reinforcement layer, and an outer layer of high-density polyethylene.
2.0.15 spoolable reinforced thermoplastic pipe (RTP)
A type of spoolable composite pipe, consisting of a thermoplastic liner and a structural layer wound around the liner, typically composed of an even number of symmetrically helically wound reinforcement layers.
2.0.16 internal expanded end fitting
A fitting that connects to the pipe body by radially expanding a metal component inside the continuous pipe.
2.0.17 external contracted end fitting
A fitting that connects to the pipe body through the simultaneous action of radial expansion of a metal component inside the continuous pipe and external radial compression.
2.0.18 reinforced monomer casting nylon pipes
Pipes and fittings produced by melting and dehydrating caprolactam, adding appropriate amounts of reinforcing agents (such as glass fiber, kaolin) and catalysts for modification into reinforced MC nylon, and using centrifugal or static casting processes under normal pressure.
2.0.19 nylon-steel composite pipes
Pipes and fittings with standard flanges, produced by melting and dehydrating caprolactam and using centrifugal or static casting processes under normal pressure.
2.0.20 fusion-jointing
A connection method where the surfaces to be joined are melted using specialized tools and then pressed together (or inserted) to fuse them into one piece.
Note: Common fusion jointing methods can be divided into butt fusion, socket fusion, and saddle fusion based on the structural characteristics of the heater or the connection surfaces.
2.0.21 electrofusion-jointing
A connection method where pipe components are fused by supplying electrical energy to electric heating elements pre-embedded in the joint surface.
Note: Refers to pipe components with pre-embedded heating elements, such as electrofusion couplers, electrofusion saddle fittings, and electrofusion tapes.
2.0.22 hot gas welded joint
A method of forming a joint by heating the surfaces to be joined with hot air or an inert gas, pressing the two surfaces together, and adding filler material to achieve fusion.
2.0.23 socket type connection
A connection method where the spigot end of one pipe or fitting is inserted into the socket of the mating piece, and the annular gap is sealed with filling material.
3 Basic Requirements
3.0.1 Construction units undertaking non-metallic pipeline projects shall possess the corresponding construction qualification level for the project content they undertake and the corresponding special equipment installation license qualification.
3.0.2 Among the personnel participating in the construction quality acceptance of non-metallic pipeline projects from all parties, those with qualification requirements shall possess the corresponding qualifications.
