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Increasing Service-Life of Cut-and-Cover Tanks. by. Jan Bremert Technical Director Tba International GmbH & Co. KG Fabersweg 1 22848 Norderstedt Germany Phone.: 01149 40 734 4090-11 Fax: 01149 40 523 6081 E-Mail: j.bremert@tankbau.com. Cut-and Cover Tanks of the US Forces
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Increasing Service-Life of Cut-and-Cover Tanks by Jan Bremert Technical Director Tba International GmbH & Co. KG Fabersweg 1 22848 Norderstedt Germany Phone.: 01149 40 734 4090-11 Fax: 01149 40 523 6081 E-Mail: j.bremert@tankbau.com
Cut-and Cover Tanks of the US Forces mostly built in the 1950s • Single-walled • Corrosion problems • Deformations caused by ground water • Structural damages • Operational problems
Advantages of renewing old tanks • Purchase of new property is not necessary • construction permit is not required • no changes in infrastructure
Additional Advantages of Cut-and-Cover Tanks • no fire protection facilities required • secondary containment outside the tank is not required • less safety distance between the tanks
Leak Protection Lining Primary skin Interstitial space Secondary skin Structural tank
Option 1 • Single-skin Lining • Application on tank bottom and wall • guarantees the tightness of the tank • corrosion protection is included • Used if leak monitoring is not required
Option 2 Double-skin Lining • System is permanently monitored by leak detector device • Highest level of safety and environmental protection • Meets all European government regulations • Is recommended by NATO and USAFE • Has an Equipment Approval from Florida DEP
Pore TestingHigh Voltage Pore Test 1. Sealing with polyester resin High Voltage Pore Test 2. Sealing with polyester resin High Voltage Pore Test
Tank Renovation at Tank Farm Vidin, Bulgaria • Main problems: • Pit corrosion in the tank bottom • Single-skin bottom • Internal support construction for center column
Flexible Manufacturing Integration of pipes
Flexible Manufacturing Integration of columns
Solution for special Constructions Integration of steel constructions on tank bottom
Tank Renovation on US Air Base Incirlik, Turkey • Main problems: • Heavy Corrosion in the tank wall • Pit corrosion in the tank bottom • Corrosion at the tank roof • Tank bottom without slope to the pump sump
US Air Base Incirlik, Tank 3 Steel fibre concrete at tank bottom
US Air Base Incirlik, Tank 3 Shotcrete application at tank wall
US Air Base Incirlik, Tank 3 Concrete wall and coating at tank roof and columns
US Air Base Incirlik, Tank 3 tba leak protection lining
New Tank Construction cost: $ 4.5 million Restorated Tank Construction cost: $ 1.5 million Tank Reconstruction
Tank Renovation in Arahal, Spain • Main problems: • Deformations in the tank bottom • Pit corrosion in the tank bottom • Cracks in the welding seams • Heavy corrosion at the tank roof • Tank bottom without slope to the pump sump
Arahal Tank 206 New concrete bottom with leak protection lining
Arahal Tank 208 Just using the existing manholes No additional openings in the tank necessary
Arahal Tank 206 Coating of Tank Roof and Columns
Arahal Tank 206 Final conductive Coating on Tank Bottom and Wall (if required)
Reliable system System with low operation costs Used for more than 40 years in storage tanks acc. to standard design US Air Forces Europe No corrosion problems Long service life tba Leak Protection Lining
Restoration of cut and cover tanks with Leak Protection Lining = An easy and cost-saving Way
Tank retrofitting and reconstruction >>> There is always a solution <<<