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Hot dip galvanizing surface preparation (ISO-8501-1).

Hot Dip Galvanizing

Hot dip galvanizing procedure. All items to be blast cleaned as per ISO 8501-1.The surface profile shall be restricted to a maximum of 30micron.Prior to blasting,all rough welds,weld spatter and other sharp projections etc.shall be ground smooth.All oil,grease or any other impurities on the blasting surface shall be removed by …

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Holiday testing procedure of internal tank lining.

Holiday testing procedure of internal tank lining.

NACE SP-0188-Holiday testing of internal lining. Equipment-The holiday testing equipment shall be used as high voltage spark tester for coating thickness above 500microns (20mills) ASTM SP D0188.The equipment should be battery operated type and metal brush shall be capable of scanning the tank coating. Calibration of holiday equipment-The holiday detector …

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Tank Internal Lining Application.

Tank Internal Lining Application.

Fiberglass mat dimensions and application. Tank internal lining (FGRL) shall be done as per client requirements.There are two types of Fiber glass lining process (two layer and single layer).As per Client recommendation we will do lining application .Normly we are apply single layer with resin and shall achieve a minimum …

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Surface Preparation of Fiber Glass Lining Surface.

Surface Preparation of Fiber Glass Lining Surface.

Surface Preparation of Fiber Glass Lining Surface. Prior to start surface preparation of the tank surface to be lined should be thoroughly cleaned to remove scale,dirt,paint,oil,grease,weld spatters,sharp protrusions,sliver etc.The tank surface should be completely dry and free from any moisture prior to blast cleaning. Proper ventilation shall be made available …

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PQT For Fiber Glass Lining of Tank.

PQT For Fiber Glass Lining of Tank.

Lining Procedure Qualification Test. Prior to start any work PQT for fiberglass lining procedure should be qualified.The Steel plate size should be 900mm x 900mm x 6mm thickness welded to another vertical plate of size 900mm x 300mm x 6mm.The Surface preparation should be cleaned according to SIS 05 59 …

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Coating defects and others details.

Coating defects and others details.

Coating defects and others details. CHECKING-Checking coating defects of paint failure in which many shall cracks appear in the surface of paint. Checking COALESCING-The settling or drying of an emulsion paint as the water evaporates. COHESION-coating defects of attraction of molecules within a coating ( how it holds together). COLORANT-Concentrated …

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