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51315-6197-Hanford Review of Double-Shell Tank Construction

Picture for Hanford Review of Double-Shell Tank Construction
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Product Number: 51315-6197-SG
ISBN: 6197 2015 CP
Author: Jason Gunter
Publication Date: 2015
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$20.00
$20.00
During routine visual inspections of Hanford double-shell waste tank 241-AY-102 (AY-102) anomalies were identified on the annulus floor which resulted in further evaluations. Following a formal leak assessment in October 2012 Washington River Protection Solutions LLC (WRPS) determined that the primary tank of AY-102 was leaking. A formal leak assessment documented in RPP-ASMT-53793 Tank 241-AY-102 Leak Assessment Report identified first-of-a-kind construction difficulties and trial?and-error repairs as major contributing factors to tank failure. To determine if improvements in double-shell tank (DST) construction occurred after construction of tank AY-102 a detailed review and evaluation of historical construction records was performed for Hanford’s remaining twenty-seven DSTs. Review involved research of 241 boxes of historical project documentation to better understand the condition of the Hanford DST farms noting similarities in construction difficulties/issues to tank AY?102. Information gathered provides valuable insight regarding construction difficulties future tank operations decisions and guidance of the current tank inspection program. Should new waste storage tanks be constructed in the future these reviews also provide valuable lessons-learned.
During routine visual inspections of Hanford double-shell waste tank 241-AY-102 (AY-102) anomalies were identified on the annulus floor which resulted in further evaluations. Following a formal leak assessment in October 2012 Washington River Protection Solutions LLC (WRPS) determined that the primary tank of AY-102 was leaking. A formal leak assessment documented in RPP-ASMT-53793 Tank 241-AY-102 Leak Assessment Report identified first-of-a-kind construction difficulties and trial?and-error repairs as major contributing factors to tank failure. To determine if improvements in double-shell tank (DST) construction occurred after construction of tank AY-102 a detailed review and evaluation of historical construction records was performed for Hanford’s remaining twenty-seven DSTs. Review involved research of 241 boxes of historical project documentation to better understand the condition of the Hanford DST farms noting similarities in construction difficulties/issues to tank AY?102. Information gathered provides valuable insight regarding construction difficulties future tank operations decisions and guidance of the current tank inspection program. Should new waste storage tanks be constructed in the future these reviews also provide valuable lessons-learned.
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