The first actual inspection work in the storage Tank is raw materials inspection.
The original or authenticated copies of mill test certificates of material normally are available at manufacturer's premises.
The third party inspector examines these certificates for compliance with specifications and where appropriate, drawings.
The review includes checks on:
• Certificate No.
• Heat or cast No.
• Chemical composition.
• Mechanical properties.
• Heat treated condition.
• NDE applied and results.
• Surface finish
Then the inspector witnesses the materials identification on the certificates against materials marking. It is also necessary to check with storage Tank drawing datasheet, material list and other specification as appropriate.
The identification such as Heat No. needs to be transferred to cut off components.Visual inspection for surface finish and probable defects are done and dimensional compliance with specification need also to be controlled.
When the third party inspector carried out the material inspection, then provides inspection visit report (IVR), the report contains following items:
• Confirmation of satisfactory document review
• Record of the endorsement of certification reviewed/witnessed
• Record of all non-conformities
• Record of any tests witnessed and the result