Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Evaluation of Ultrasonic Measurement Variation in the Double-Shell Tank Integrity Project

Technical Report ·
DOI:https://doi.org/10.2172/970349· OSTI ID:970349
; ; ;
Washington River Protection Solutions (WRPS) under contract from the U.S. Department of Energy (DOE) is responsible for assessing the condition of the double-shell tanks (DST) on the Hanford nuclear site. WRPS has contracted with AREVA Federal Services LLC (AFS) to perform ultrasonic testing (UT) inspections of the 28 DSTs to assess the condition of the tanks, judge the effects of past corrosion control practices, and satisfy a regulatory requirement to periodically assess the integrity of the tanks. Since measurement inception in 1997, nine waste tanks have been examined twice (at the time of this report) providing UT data that can now be compared over specific areas. During initial reviews of these two comparable data sets, average UT wall-thickness measurement reductions were noted in most of the tanks. This variation could be a result of actual wall thinning occurring on the waste-tanks walls, or some other unexplained anomaly resulting from measurement error due to causes such as the then-current measurement procedures, operator setup, or equipment differences. WRPS contracted with the Pacific Northwest National Laboratory (PNNL) to assist in understanding why this variation exists and where it stems from.
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
OSTI ID:
970349
Report Number(s):
PNNL-19010; 830403000
Country of Publication:
United States
Language:
English

Similar Records

Ultrasonic Examination of Double-Shell Tank 241-AW-106 Examination Completed July 2009.
Technical Report · Fri Aug 28 00:00:00 EDT 2009 · OSTI ID:973451
Ultrasonic Examination of Double-Shell Tank 241-AW-101 Examination Completed February 2009.
Technical Report · Wed Mar 18 00:00:00 EDT 2009 · OSTI ID:989453
Ultrasonic Examination of Double-Shell Tank 241-AW-105 Examination Completed April 2009.
Technical Report · Sun May 31 00:00:00 EDT 2009 · OSTI ID:989454

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
42 ENGINEERING
AFS
CORROSION
DST
EVALUATION
HANFORD RESERVATION
Measurement
PNNL
RADIOACTIVE WASTE STORAGE
STORAGE FACILITIES
THICKNESS
ULTRASONIC TESTING
UT
Ultrasonic
VARIATIONS
WALLS
WRPS