Storage tank inspection and testing
SSI can carry out maintenance programmes on tanks, pipes, joints, gaskets and seams which should be inspected routinely for visible oil leaks. Our engineers record all inspection results on their technical database and all data is retained for a minimum of three years.
Tank corrosion and bottom deterioration is also a concern. Tanks bottoms can corrode and leak without any signs of a visible leak. Dielectric coatings and cathodic protection can provide corrosion protection. In some cases double bottom tanks have been used. The type of material and foundation must be considered and our engineers are well versed in the design of tank bottoms and foundation courses.
Corrosion of a tank's surface may also result in tank failure. Corrosion that is concentrated in small areas of a tank's surface or "pitting" creates a high potential for tank failure. If tanks are rusty, holes may form causing the tank to leak. Tank supports and foundations should also be inspected for cracks, crumbling, deterioration, and seepage.
All tanks should be subjected to periodic integrity testing. Some of the accepted methods for testing as used by our engineers are listed below:
- X-ray or radiographic analysis measures wall thickness and detects cracks and crevices in metal.
- Ultrasonic analysis measures shell metal thickness.
- Hydrostatic testing shows leaks caused by pressure.
- Visual inspection detects some cracks, leaks, or holes.
- Magnetic flux eddy current test used in conjunction with ultrasonic analysis detects pitting.
Our experienced engineers can help to ensure that your storage tanks are regularly inspected and kept in optimum condition. Not only will this reduce the likelihood of product loss it will also protect you from environmental damages.