The photo shows that the tank has almost more than 70% Hard Scale as described according to IACS PR-33 Owners Hull Inspection and Maintenance Schemes. The tank on the photo is labeled as colored RED under Traffic Light Condition Scoring.

The tank has almost more than 70% Hard Scale as described according to IACS PR-33 Owners Hull Inspection. The practical approach to avoid heavy corrosion inside the tanks is to have schedules surveys inside the tanks and if possible, carry out corrosion repairs to prevent the corrosion from going to worse

Scheduled Surveys and inspections on the tanks coupled with detailed corrosion assestments can prevent these worse conditions from happening. Moreover, if the condition calls for a treatment in the tanks, this should be followed to minimize the corrosion damages and apply protective coating to ensure tank integrity preservation.