Indicator | Details |
Transport medium | Natural gas |
Engineering quantity | Core repair section 2.8 km |
Original pipe specifications | DN300 (carbon steel pipeline) |
Work pressure | -20℃ Extreme cold permafrost area |
Construction period | 45 days (originally planned for 90 days) |
Construction characteristics | Permafrost zone flexible composite pipe non-open excavation repair |
1. Extreme cold environment constraints: Materials become brittle and curing efficiency drops at -20°C, requiring insulated work shelters to maintain construction conditions;
2. High leakage risk: Pipelines operate under pressure (0.8MPa) and contain flammable/explosive media, posing significant challenges for construction safety management;
3. Permafrost Construction Adaptation: Excavation/supporting structures in permafrost zones are prone to collapse, necessitating trenchless techniques to mitigate geological risks.
1. Completed construction 45 days ahead of schedule, reducing annual leakage losses by over $5 million;
2. Achieved a technical breakthrough in flexible composite pipe repair for extreme permafrost regions, setting an international benchmark for similar projects;
3. Ensured gas supply safety for 300,000 residents, earning high recognition from Minsk municipal authorities in Belarus.
Chinese technology has solved Belarus' gas dilemma! Not only did it efficiently complete pipeline repairs in extreme cold conditions, but it also ensured safe and reliable gas supply to the city, proving itself a trustworthy international partner.
— Ivanov, Head of the Minsk City Administration's Energy Department