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Title: Hanford Double-Shell Tank Extent-of-Condition Construction Review

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. The 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 were performed for the first three DST tank farms constructed, which included tanks 241-AY-101, 241-AZ-101, 241-AZ-102, 241-SY-101, 241-SY-102, and 241-SY-103. The review for these six tanks involved research and review of dozens of boxes of historical project documentation. These reviews form a basis to better understand the current condition of the three oldest Hanford DST farms. They provide a basis for changes to the current tank inspection program and also provide valuable insight into future tank use decisions. If new tanks are constructed in the future, these reviews provide valuable "lessons-learned" information about expected difficulties as well as construction practices and techniques that are likelymore » to be successful.« less
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [1] ;  [1]
  1. Washington River Protection Solutions, Richland, WA (United States)
  2. USDOE Office of River Protection, Richland, WA (United States)
  3. BNL Technical Services, Richland, WA (United States)
Publication Date:
OSTI Identifier:
1105996
Report Number(s):
TOC-PRES--13-3414-FP-Rev0
TRN: US1400403
DOE Contract Number:
DE-AC27-08RV14800
Resource Type:
Conference
Resource Relation:
Conference: WM2014 Waste Management Symposia, Phoenix, AZ (United States), 2-6 Mar 2014; Related Information: Number 14174
Research Org:
Hanford Site (HNF), Richland, WA (United States); Washington River Protection Solutions, Richland, WA (United States); USDOE Office of River Protection, Richland, WA (United States); BNL Technical Services, Richland, WA (United States)
Sponsoring Org:
USDOE Office of Environmental Management (EM)
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 42 ENGINEERING