1 General Provisions
1.0.1 This standard is formulated with a view to improving the construction level of long-distance oil and gas pipeline, ensuring pipeline engineering quality and reducing engineering cost.
1.0.2 This standard is applicable to construction and acceptance of new, rebuilt and extended land oil and natural gas long-distance pipeline, gas pipeline, and products pipeline engineering.
This standard is not applicable construction and acceptance of process pipes in oil and gas long-distance station. oil and gas field gathering pipeline, urban fuel gas distribution pipe network, oil & gas pipeline in industrial enterprise, reconstruction of oil & gas pipeline that has been put into operation, and overhaul engineering.
1.0.3 The pipeline engineering construction covers Construction Preparation, acceptance of Materials and pipe auxiliaries, delivery-receiving stake and survey takingoff, operation yard Preparation and road construction, transport and storage of Materials and anti-corrosion pipe, pipe ditch excavation, pipe laying and on-site edge preparation, pipe orifice assembly, welding and acceptance, pipeline anti-corrosion and insulation engineering , pipeline ditching and backfill, pipeline crossing engineering and laying in one ditch, pigging, diameter measurement and pressure test , gas pipeline drying, pipeline connector, pipeline appurtenant works, health, safety and environment, and handing over and acceptance of engineering.
1.0.4 The technical disclosure and on-site stake delivery shall be conducted before the construction; the completion data shall be prepared in time during the construction.
1.0.5 The construction enterprises shall organize the construction in accordance with the requirements of the design document, establish the quality management system and prepare reasonable quality planning to ensure engineering quality.
1.0.6 The enterprises undertaking long-distance oil and gas pipeline engineering must has the construction enterprise qualification authorized the nation or industrial authorities.
1.0.7 In addition to this code, the construction and acceptance of long-distance oil and gas pipeline engineering construction shall be in accordance with those specified in the current relevant national standards.
Contents
1 General Provisions
2 Terms
3 Construction Preparation
4 Acceptance of Materials and Pipe Auxiliaries
4.1 General Requirements
4.2 Inspection and Repair of Materials and Pipe Auxiliaries
5 Delivery-Receiving Stake and Survey Takingoff
5.1 General Requirements
5.2 Stake Delivery and Shifting
5.3 Survey Takingoff
6 Operation Yard Preparation and Road Construction
6.1 Preparation of Operation Yard
6.2 Construction of Construction Road
7 Transport and Storage of Materials and Anti-Corrosion Pipe
7.1 Handling
7.2 Transport
7.3 Pipes Storage and Protection
8 Pipe Ditch Excavation
8.1 Physical Dimension of Pipe Ditch
8.2 Pipe Ditch Excavation
8.3 Pipe Ditch Acceptance
9 Pipe Laying and On-Site Groove Preparation
9.1 Pipe Laying
9.2 On-site Groove Preparation
10 Pipe Orifice Assembly, Welding and Acceptance
10.1 General Requirements
10.2 Pipe Orifice Assembly and Welding
10.3 Inspection and Acceptance of Weld Seam
11 Pipeline Anti-Corrosion and Heat-Insulation Engineering
12 Pipeline Ditching and Backfilling
12.1 Pipeline Ditching
12.2 Pipe Ditch Backfilling
13 Pipeline Crossing Engineering and Laying in One Ditch
13.1 Pipeline (Through) Crossing Engineering
13.2 Through Buried Pipes and Cables
13.3 Pipelines Laying in One Ditch
14 Pigging, Diameter Measurement and Pressure Test of Pipelines
14.1 General Requirements
14.2 Pigging and Diameter Measurement
14.3 Water Pressure Test
14.4 Gas Pressure Test
15 Gas Pipeline Drying
16 Pipeline Connections
17 Pipeline Appurtenant Works
17.1 C ut-off Valve Rooms and Valve Installations
17.2 Cathodic Protection Engineering
17.3 Mileage Stake, Turning Point Stake, Marking Stake, Anchorage Pier and Warning Board
17.4 Pipeline Protection Constructions
18 Health, Safety and Environment
19 Handing over and Acceptance of Engineering
Annex A Method on On-site Paying off for the Pipe Laying with Elastic Bending of Buried Pipelines
Annex B Instructions (specifications) for welding process
Annex C Evaluation report of welding procedure
