A COMPREHENSIVE TECHNICAL REVIEW OF THE DEMONSTRATION BULK VITRIFICATION SYSTEM Page: 4 of 91
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In May 2006, CH2M HILL Hanford Group, Inc. chartered an Expert Review Panel (ERP)
to review the current status of the Demonstration Bulk Vitrification System (DBVS). It
is the consensus of the ERP that bulk vitrification is a technology that requires further
development and evaluation to determine its potential for meeting the Hanford waste
stabilization mission, No fatal flaws (issues that would jeopardize the overall DBVS
mission that cannot be mitigated) were found, given the current state of the project.
However, a number of technical issues were found that could significantly affect the
project's ability to meet its overall mission as stated in the project Justification of Mission
Need document, if not satisfactorily resolved.
The ERP recognizes that the project has changed from an accelerated schedule
demonstration project to a formally chartered project that must be in full compliance with
DOE 413.3 requirements. The perspective of the ERP presented herein, is measured
against the formally chartered project as stated in the approved Justification of Mission
A Justification of Mission Need document was approved in July 2006 which defined the
objectives for the DBVS Project. In this document, DOE concluded that bulk
vitrification is a viable technology that requires additional development to determine its
potential applicability to treatment of a portion of the Hanford low activity waste. The
DBVS mission need statement now includes the following primary objectives:
" Process approximately 190,000 gallons of Tank S-109 waste into fifty 100 metric
ton boxes of vitrified product.
* Store and dispose of these boxes at Hanford's Integrated Disposal Facility (IDF)
* Evaluate the waste form characteristics.
* Gather pilot plant operability data, and
* Develop the overall life cycle system performance of bulk vitrification and
produce a comparison of the bulk vitrification process to building a second LAW
Immobilization facility or other supplemental treatment alternatives as provided
While the DBVS is clearly poised to meet the first three objectives, the project must
expeditiously develop plans to achieve the last two and develop clear success criteria to
determine whether they have been met.
A summary of the key issues that need technical and management actions follows.
* Additional cold testing is needed to underpin process design and operations (e.g.,
flow of dried waste feed, prevention of secondary phases, and balancing of the
off-gas systems) before radioactive feed is introduced.
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SCHAUS, P.S. A COMPREHENSIVE TECHNICAL REVIEW OF THE DEMONSTRATION BULK VITRIFICATION SYSTEM, report, September 29, 2006; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc885749/m1/4/: accessed January 21, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.