GB 50840-2012 GB 50840-2012矿浆管线施工及验收规范:英文 - 工标库
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GB 50840-2012 GB 50840-2012矿浆管线施工及验收规范:英文现行
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Announcement of Ministry of Housing and Urban-Rural Development of the People s Republic of China
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Foreword
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1 General Provisions
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2 Terms
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3 Basic Requirement
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4 Surveying and ROW Clearance
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4.1 General Provision
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4.2 Surveying
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4.3 Right-of-Way Clearance
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5 Material and Pipeline Accessory Acceptance
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5.1 General Provisions
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5.2 Loading，Unloading and Transportation of Anticorrosion Pipe
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5.3 Acceptance and storage
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6 Stringing
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7 Pipeline Trench
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7.1 General Provision
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7.2 Geometric Size of Pipeline Trench
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7.3 Pipeline Trench Excavation
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7.4 Pipeline Trench Accepetance
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8 Pipeline Welding and Acceptance
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8.1 General
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8.2 Weather Conditions
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8.3 Preparation for Welding
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8.4 Alignment
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8.5 Preheat Temperature and Interpass Temperature
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8.6 Remove the Lineup Clamp
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8.7 Welding
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8.8 Repair and Removal of Defects
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8.9 Tie-In Welding
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8.10 Joint Identification
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8.11 Acceptance Standards of Welds
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9 Pipeline Lowering-In and Trench Backfilling
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9.1 Pipeline Lowering-In
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9.2 Pipeline Trench Backfilling
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10 Anticorrosion，Repairing and Joint Coating of Pipeline
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10.1 General Provision
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10.2 Pipeline Anticorrosion
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10.3 Repairing and Joint Coating for Anticorrosion Pipeline
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11 Crossings
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12 Pipeline Pigging，Gauging and Hydrotesting
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12.1 General Provision
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12.2 Pipeline Pigging and Gauging
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12.3 Pipeline Hydrotest
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13 Pipeline Auxiliary Engineering
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13.1 Makers，Posts and Piles Burial
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13.2 Erosion Protection
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13.3 Cathodic Protection
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14 Safety and Environment
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15 Engineering Handover and Acceptance
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Appendix A Qualification of Welding Procedures
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A.1 General
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A.2 V-notch Charpy Impact Toughness Test
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A.3 Macro metallographic and hardness tests
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A.4 Reinspection
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Appendix B Inspection Record for Quality of Construction
