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Design Calculation For Installation Of New Twin 24" Pipelines From BPCL-ECI To ETTPL

Bharat Petroleum Corporation Limited (BPCL) is an Indian state-owned oil and natural gas company with its headquarters at Mumbai, Maharashtra. It is one of the leading companies in the petroleum sector in India. M/s BPCL, proposes to lay a Gas Pipeline from BPCL Ennore Coastal Installation to ETTPL in Thiruvallur (Tamil Nadu) based on PNGRB authorization. In this regard M/s NRP Projects has been awarded for fabrication and erection of this underground pipeline from BPCL Ennore coastal to Ennore Tank Terminal Private Limited (ETTPL) at Ennore, Tamilnadu. This Project comprises of detailed design calculation for installation of new twin 24” proposed pipelines as aforesaid location as per ASME B31.4 Standard.

There are no wildlife sanctuaries and National Parks falling in route of pipeline. The proposed line crossed through the following River and two Railways as,

  • Kosasthalaiyar River
  • Southern Railway Chennai (From Nandiyambakkam – Islands)
  • Southern Railway Chennai (From Puladivakkam – Nandiyambakkam)

The purpose of the design calculations is to check the adequacy of the design of major crossings in the route of the proposed 24inch nominal dia. twin MS and HSD product pipelines from BPCL Ennore Coastal Installation (BPCL-ECI) to Ennore Tank Terminal Pvt. Ltd. (ETTPL). The total length of the pipeline is approximately 8.7 km. There are 21 crossings in the pipeline route which are identified in the list of major crossings and are grouped under HDD and bore-cut crossings. These include two railway track crossing, one minor river crossing, one canal crossing and one nail crossing besides asphalt road and cement road crossings, and existing pipelines crossing. As per Client requirement overburden analysis is carried out to check stability of the pipelines against buoyancy force with the water table reaching the ground level.

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