1 Savannah River Site Savannah River Site Waste Disposition Project Waste Disposition Project Status of Waste Status of Waste Determination and Tank Determination and Tank Closure Closure March 24, 2009 March 24, 2009 Sherri Ross Sherri Ross Waste Removal and Tank Closure Waste Removal and Tank Closure Program Manager Program Manager Waste Disposition Programs Division Waste Disposition Programs Division Savannah River Operations Office
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Savannah River SiteSavannah River SiteWaste Disposition ProjectWaste Disposition Project
Status of Waste Status of Waste Determination and Tank Determination and Tank
ClosureClosure
March 24, 2009March 24, 2009
Sherri RossSherri RossWaste Removal and Tank Closure Waste Removal and Tank Closure
Program ManagerProgram ManagerWaste Disposition Programs DivisionWaste Disposition Programs Division
Savannah River Operations Office
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Purpose & Presentation Overview
Purpose: Describe the status of the SRS Tank Closure Program.
Presentation Overview:– Waste Removal– Closure Process – F Tank Farm Performance Assessment
Comments– Path Forward
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Tank Closure Program
• Mechanical cleaning with Sand Mantis crawler– Tanks 18 and 19 underway– Challenging but effective– Two back tilt wheel failures– Anticipate ~75% residual heel
removals at completion• Chemical cleaning with oxalic
acid – Tanks 5 and 6 primary
• Remote crawler for annulus cleaning of Tanks 5 and 6
Tank 18 start 1/30/09
Tank 18 on 2/17/09
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TMR Sand Mantis® Tilt Wheel
Tank 18 Sand Mantis Retaining Screw
Original Design
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TMR Sand Mantis® Tilt Wheel Improved Design
Tank 18 Sand Mantis Retaining Cover
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Tank 18 Crawler Footer
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Tank 19 Tilt Arm Modification
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Tank 6 Annulus Crawler
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Regulatory Documentation Path to Closure in the SRS F-Tank Farm
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F Tank Farm Performance Assessment Comments
• Comments received from– South Carolina Department of Health and Environmental