1.0.1 This code is formulated with a view to ensuring the construction quality of oil and gas transmission pipeline crossing engineering (hereinafter referred to as "crossing engineering") and achieving safety, environmental protection and application.
1.0.2 This code is applicable to the construction of newly-built or renovated and extended crude oil, natural gas, welding gas, refined oil, etc. transmission pipeline engineering crossing overground and underground obstructions difficult to cross, such as rivers, lakes, hills, highways and railways.
1.0.3 The construction method of the crossing engineering may be divided into 5 types: directional drilling crossing construction, pushing pipe crossing construction, shield crossing construction, open-cut excavating crossing construction, mine tunnelling method crossing construction.
1.0.4 The enterprises undertaking crossing engineering construction shall be provided with the construction enterprise qualification authorized by the national or industrial authorities.
1.0.5 The construction and acceptance of the crossing engineering shall not only conform to this code, but also comply with those of the current laws and regulations and relevant standards of the nation.
1 General Provisions
2 Terms
3 Basic Requirements
4 Material Inspection
5 Pipeline Assembling, Welding, Joint Coating and Inspection
5.1 General Requirements
5.2 Pipeline Assembling and Welding
5.3 Pipeline Welding Quality Inspection
5.4 Joint Coating
6 General Requirements of Construction Preparation
7 Crossing Construction by Horizontal Directional Drilling
7.1 General Requirements
7.2 Survey Payingoff
7.3 Crossing Construction
8 Crossing Construction by Pushing Pipe
8.1 General Requirements
8.2 Survey Payingoff
8.3 Crossing Construction by Auger Drill Pushing Pipe
8.4 Crossing Construction by Jack Pushing Pipe
8.5 Crossing Construction by Balance Pushing Pipe
9 Crossing Construction by Shield
9.1 General Requirements
9.2 Field Exploration
9.3 Construction Survey
9.4 Shield Construction
9.5 Pipeline Installation
10 Crossing Construction by Open-cut Excavating
10.1 General Requirements
10.2 Crossing Construction by Excavating without Water
10.3 Crossing Construction by Excavation with Water
10.4 Crossing Construction by Highway Open-cut Excavating
11 Tunnel Crossing Construction by Mine Tunnelling Method
11.1 General Requirements
11.3 Tunnel Construction
11.4 Pipeline Installation
12 Pipeline Pigging and Pressure Test
13 Health, Safety and Environment
14 Engineering Handover and Acceptance Preparation
Explanation of Wording in this Code
