THE ARCHIVES
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Internal Coatings
1. Internal coatings, such as fusion bonded epoxy or two pack phenolic epoxy paint (flow coat), may be used in the…
basic 2 min read
Provisions for corrosion monitoring
1. For buried or submerged pipelines, the occurrence of coating damage is normally monitored by cathodic protection measurements (refer to DEP…
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Internal Corrosion
1. Linings may be used for internal corrosion protection, provided the lining material does not degrade following long-term exposure to the…
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Pipeline Corrosion and Coatings
Onshore Pipelines 1. All metallic buried pipelines including duplex material pipelines, shall be coated externally. 2. Pipelines shall be coated externally by…
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Pipeline Stringing
1. Stringing shall be done after blasting and trenching when ROU is in rocky area. 2. Coated pipes shall be strung on…
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Laying Pipeline in Swamps
1. Two methods may be considered for the installation of pipelines in swamps: 1. The flotation method, where the pipeline is laid…
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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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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…
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Pipeline Welding
1. Welding Procedure Specification (WPS) to be followed for the welding to be qualified and the Procedure qualification record (PQR) is…
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Pipeline Fabrication
Pipeline Fabrication and Installation Activities includes pipe bending, welding, pipeline string, pipeline lowering etc. Pipeline Dump Sites Acquiring of land…
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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…