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INTERNAL TANK INSPECTION

1.0 Visual Inspection on Tank Supports, conduits and assemblies

a. Carry out visual inspection on bottom plate, support structures, foundation, floor to shell weld internal, pressure valves, Nozzles and all applicable apparatus.

b. Photographs to be taken for findings recorded in the report.

2.0 Tank Settlement Survey & Calibration

a. To find the centre of tank by using survey equipment and fix the total station.

b  Make sure hard barricade has to be placed around the station to avoid lost of station level.

c. Perform Out of Roundness, Verticality & shell Settlement respectively.

d. Perform profile survey and calibration once initial survey is completed.

3.0 Tank Bottom plate Thickness Gauging

a. Surface cleaning/preparation as per the standard procedure.

b. Five location in each section has to perform UTG in Bottom Plate.

4.0 Magnetic Particle Inspection/Eddy Current Inspection on weld joint of shell to annular plate

a. Surface cleaning /preparation as per the standard procedure.

b. Perform Magnetic Particle inspection /ECI on weld joint of shell to annular plate.

EXTERNAL TANK INSPECTION

5.0 Ultrasonic Thickness Gauging on shell (As per external inspection)

a. Carry out visual inspection on bottom plate, support structures, foundation, floor to shell weld internal, pressure valves, Nozzles and all applicable apparatus.

b. Photographs to be taken for findings recorded in the report.

6.0 Tank Roof Plate Thickness Gauging

a. Surface cleaning/preparation as per the standard procedure.

b. Five location in each section has to perform UTG in Bottom Plate

7.0 Visual Inspection on Tank Supports, conduits and assemblies

a. Carry out visual inspection on top plate, support floor to shell weld external, roof structure, pressure valves, Nozzles and all applicable apparatus.

b. Photographs to be taken for findings recorded in the report.