{"id":4333,"date":"2025-12-14T06:45:57","date_gmt":"2025-12-14T06:45:57","guid":{"rendered":"https:\/\/www.pipetechservice.com\/?p=4333"},"modified":"2025-12-14T08:17:59","modified_gmt":"2025-12-14T08:17:59","slug":"high-pressure-hot-tapping-plugging-for-guangzhou-zhanjiang-high-speed-rail-project","status":"publish","type":"post","link":"https:\/\/www.pipetechservice.com\/ru\/high-pressure-hot-tapping-plugging-for-guangzhou-zhanjiang-high-speed-rail-project\/","title":{"rendered":"High-Pressure Hot Tapping & Plugging for Guangzhou-Zhanjiang High-Speed Rail Project"},"content":{"rendered":"
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Project Snapshot: A Race Against Time at the Railway’s Core<\/strong><\/h2>\n\n
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Client:<\/strong><\/th>\nSouthwest Products Pipeline Authority<\/th>\n<\/tr>\n<\/thead>\n
Location:<\/strong><\/td>\nZhanjiang, Guangdong Province, China<\/td>\n<\/tr>\n
Core Challenge:<\/strong><\/td>\nRelocating a live, high-pressure (3.2MPa) \u03c6406.4mm products pipeline running directly beneath the critical “throat zone” of the new Guangzhou-Zhanjiang High-Speed Rail station. Traditional shutdown was economically and socially unacceptable.<\/td>\n<\/tr>\n
Our Solution:<\/strong><\/td>\nA bespoke\u00a0Four-Plug, Three-Tap, Double Bypass<\/strong>\u00a0hot tapping and plugging procedure, enabling the full isolation and removal of a 5.75km pipe section without a single minute of shutdown.<\/td>\n<\/tr>\n
Key Results:<\/strong><\/td>\n\u2705\u00a0Zero<\/strong>\u00a0production interruption or revenue loss
\u2705\u00a0100%<\/strong>\u00a0of 760m\u00b3 products safely recovered
\u2705\u00a0Zero<\/strong>\u00a0safety or environmental incidents
\u2705 Project completed within 7-day critical window<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The Challenge: A Live Artery Beneath a National Priority<\/strong><\/h2>\n

The construction of the Zhanjiang North Station is a pivotal node in China’s national high-speed rail network. However, a major obstacle lay directly in its path: the Southwest Products Pipeline, a crucial energy artery supplying refined fuels across the region.<\/p>\n

This was not a simple dig-and-replace operation. The client faced a perfect storm of constraints:<\/p>\n

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    The Astronomical Cost of Shutdown:<\/strong> A traditional pipeline shutdown for cut-out would trigger regional supply chain disruption and revenue losses estimated in the millions of dollars per day. This was not an option.<\/p>\n<\/li>\n

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    Extreme Safety and Environmental Risk:<\/strong> The 5.75km section to be abandoned contained approximately 760 cubic meters of refined oil. Performing “hot work” on a live line in an urban-adjacent area, near a major construction site, presented an unthinkable risk of fire, explosion, or environmental contamination.<\/p>\n<\/li>\n

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    Unforgiving Logistics and Timeline:<\/strong> The high-speed rail project’s schedule was immutable. The worksites were constrained, located near Xicheng Expressway and residential areas, demanding surgical precision and flawless execution.<\/p>\n<\/li>\n

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    Complex Technical Specifications:<\/strong> The pipeline, constructed of X60 steel with a wall thickness of 7.1mm, operated at 3.2MPa. All work\u2014including welding, tapping, and plugging<\/a>\u2014had to be performed under pressure, pushing the limits of equipment and engineering expertise.<\/p>\n<\/li>\n<\/ol>\n

    The client’s mandate was unequivocal: Find a contractor capable of executing a pipeline relocation with absolute safety, zero operational downtime, and guaranteed on-time delivery.<\/strong><\/p>\n

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    Our Engineered Solution: The Surgical Precision of Pressure Isolation<\/strong><\/h2>\n

    We responded not with a generic service proposal, but with a meticulously engineered Pressure Isolation and Bypass (PIB) Plan, tailored to this project’s unique DNA. Our solution, known in the field as a Four-Plug, Three-Tap, Double Bypass setup, is the industry’s gold standard for high-consequence in-service pipeline repairs<\/a>.<\/p>\n

    Technical Breakdown & Client-Centric Benefits:<\/strong><\/h3>\n

    Phase 1: Precision Tapping & Bypass Installation<\/strong>
    Using specialized DN406     hot tapping machines<\/a>, we expertly installed pressure-containing fittings and created openings in the live pipeline upstream and downstream of the work zone. This allowed us to install a temporary bypass loop, rerouting the product flow around the section slated for removal.<\/p>\n