basic 1 min read
Pipeline Lowering
1. Lowering shall commence after inspection of trench. 2. Trench bottom shall be free from pipe supports, stones, roots, debris, stakes, and…
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basic 1 min read
Pipeline Bending
1. For changes in vertical and horizontal alignment, pre-fabricated cold field bends are provided. 2. Over bends are made in manner that…
basic 2 min read
Pipeline Welding
1. Welding Procedure Specification (WPS) to be followed for the welding to be qualified and the Procedure qualification record (PQR) is…
basic 1 min read
Pipeline Fabrication
Pipeline Fabrication and Installation Activities includes pipe bending, welding, pipeline string, pipeline lowering etc. Pipeline Dump Sites Acquiring of land…
basic 1 min read
Pipeline Tie-Ins
1. The unconnected sections of the lowered pipeline sections at various locations have to be welded, coated and back-filled to make…
basic 2 min read
Pipeline Fluid Categories
The fluid transported in the pipeline should be categorised in one of the following four groups, depending on its hazard…
basic 2 min read
Pipeline Fittings
1. Threaded connections (pipe to pipe, fittings), slip-on flanges and mitred connections in excess of 3 degrees shall not be used…
basic 1 min read
Fittings and Special Components
1. Components and fittings shall be compatible with the linepipe material in terms of weldability and also conform to the bevel…
basic 1 min read
Spare Materials
1. Sufficient spare material should be ordered to cover for route deviations and possible pipeline damage during construction, and the set-up…
basic 1 min read
Re-Use of Materials
1. Materials from an abandoned pipeline may be used for a new project, provided that they can be certified as fully…
basic 1 min read
Pipeline Material Procurement
1. All materials should be procured from Manufacturers/Suppliers approved by the Client. 2. The Client shall specify if, and to what extent,…
basic 1 min read
Pipe Fabrication Method
1. Available Methods are : 1. Seamless 2. Electric Welded 3. Longitudinal Seam submerged are welded (LSAW) 4. Helical seam submerged arc welded (HSAW) 2. Submarine…
