56-Inch Gas Transmission Pipeline

Contract Date:

2005

عنوان مقدار
ClientTehran Province Gas Company
AdvisorHarazrah Consulting Engineers Group
Contract Period250 days
LocationKuh Sefid Village (Qom Province) towards Tehran
StatusFinished

Description

The 56-inch pipeline starts from Kuh Sefid Village (Qom Province) and crosses between the boundaries of Namak Lake and Howz-e Soltan Lake running through the extremely rugged and swampy terrains before reaching Charmshahr.  The 56-inch pipeline has expanded the gas transmission pipeline network operating through Tehran Province, Semnan Province and Northern Iran. The pipeline route was selected by the client due to its strategically significant location as it does not intersect with the South-North Corridor. The relevant engineering techniques, machinery and equipment were used to install the pipeline, pig-launcher and LBV stations in the swampy and lacustrine terrains. 25 km of the pipeline trench is lined with Geotextile pipeline weights (GPWs) to prevent the pipes from floating in the lake.

Scope of Work

  • Providing pipeline supplies
  • Polyethylene coating, transportation and stringing of 4,000 pipes (56 inch)
  • ROW clearing and excavation in the swampy terrains, 45,189 m
  • Welding and pipe laying
  • Installing the 56-inch pipes in the swampy and lacustrine terrains
  • Gas injection and commissioning

Key Statistics

  • ROW clearing, 45,189 m
  • Trenching in the swampy and lacustrine terrains, 45,189 m
  • Stringing and welding, 45,189 m
  • Hydrostatic testing, 45,189 m
  • Polyethylene coating, 200,000 m2
  • Gas injection and commissioning