{"id":4298,"date":"2025-12-13T11:18:16","date_gmt":"2025-12-13T11:18:16","guid":{"rendered":"https:\/\/www.pipetechservice.com\/?p=4298"},"modified":"2025-12-13T22:58:53","modified_gmt":"2025-12-13T22:58:53","slug":"successful-in-service-repair-of-a-critical-dn900-crude-oil-pipeline-using-advanced-hot-tapping-and-stoppling","status":"publish","type":"post","link":"https:\/\/www.pipetechservice.com\/es\/successful-in-service-repair-of-a-critical-dn900-crude-oil-pipeline-using-advanced-hot-tapping-and-stoppling\/","title":{"rendered":"Successful In-Service Repair of a Critical DN900 Crude Oil Pipeline Using Advanced Hot Tapping and Stoppling"},"content":{"rendered":"
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Project Snapshot:<\/strong><\/h2>\n

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Aspect<\/th>\nDetail<\/th>\n<\/tr>\n<\/thead>\n
Client<\/strong><\/td>\nNational Pipeline Network Group Shandong Co.<\/td>\n<\/tr>\n
Location<\/strong><\/td>\nRizhao, Shandong Province, China<\/td>\n<\/tr>\n
Core Challenge<\/strong><\/td>\nReplace a defective girth weld on a DN900 crude oil pipeline in a high-consequence area with zero clearance for welding, without shutdown.<\/td>\n<\/tr>\n
Our Solution<\/strong><\/td>\nCustom\u00a0Double Block & Bleed Isolation\u00a0using\u00a0Pipeline Hot Tapping and Stoppling\u00a0and secondary\u00a0airbag (bagging)\u00a0isolation.<\/td>\n<\/tr>\n
Key Results<\/strong><\/td>\n1. Zero Production Loss:\u00a0Continuous pipeline operation maintained.\u00a02. 100% Safety Record:\u00a0No incidents during high-risk isolation.\u00a03. Technical Milestone:\u00a0Successfully executed complex isolation in one of China’s most challenging pipeline geometries.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

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Cliente:<\/strong>\u00a0National Pipeline Network Group Shandong Company, Rizhao Operation Area
Project:<\/strong>\u00a0Rizhao-Yizheng Pipeline K2+230m Girth Weld Defect Replacement & Isolation Project
Core Technology Applied:<\/strong>\u00a0Pipeline Hot Tapping and Stoppling\u00a0for\u00a0Pressure Isolation\u00a0and\u00a0In-Service Repair.<\/p>\n

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The Challenge: A Critical Defect in a High-Consequence, “Un-Weldable” Location<\/strong><\/h2>\n\n

Imagine discovering a girth weld defect, rated as “unacceptable” by specialized national inspection institutes, on a major national energy artery. This was the stark reality for the operators of the 390km Rizhao-Yizheng crude oil pipeline.<\/p>\n\n