6.2 Inspection items
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Resolutions - Maritime Safety Committee - Resolution MSC.288(87) – Performance Standard for Protective Coatings for Cargo Oil Tanks of Crude Oil Tankers – (Adopted on 14 May 2010) - Annex – Performance Standard for Protective Coatings for Cargo Oil Tanks of Crude Oil Tankers - 6 Coating Inspection Requirements - 6.2 Inspection items

6.2 Inspection items

Construction stage   Inspection items
Primary surface preparation 1 The surface temperature of steel, the relative humidity and the dew point shall be measured and recorded before the blasting process starts and at times of sudden changes in weather.
2 The surface of steel plates shall be tested for soluble salt checked for oil, grease and other contamination.
3 The cleanliness of the steel surface shall be monitored in the shop primer application process.
4 The shop primer material shall be confirmed to meet the requirements of 2.3 of table 1. Verified by manufacturer.
Thickness   If compatibility with the main coating system has been declared, then the thickness and curing of the zinc silicate shop primer to be confirmed to conform to the specified values.
Block assembly 1 After completing construction of the block and before secondary surface preparation starts, a visual inspection for steel surface treatment including edge treatment shall be carried out.
Any oil, grease or other visible contamination to be removed.
2 After blasting/grinding/cleaning and prior to coating, a visual inspection of the prepared surface shall be carried out.
On completion of blasting and cleaning and prior to the application of the first coat of the system, the steel surface shall be tested for levels of remaining soluble salts in at least one location per block.
3 The surface temperature, the relative humidity and the dew point shall be monitored and recorded during the coating application and curing.
4 Inspection to be performed of the steps in the coating application process mentioned in table 1.
5 DFT measurements shall be taken to prove that the coating has been applied to the thickness as specified.
Erection 1 Visual inspection for steel surface condition, surface preparation and verification of conformance to other requirements in table 1, and the agreed specification to be performed.
2 The surface temperature, the relative humidity and the dew point shall be measured and recorded before coating starts and regularly during the coating process.
3 Inspection to be performed of the steps in the coating application process mentioned in table 1.
Parent topic: 6 Coating Inspection Requirements
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