Currently Skimming:
Contents of Letter Report
Contents of Letter Report
Pages 1-13
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finished the National Research Council report Analysis of Engineering Design Studies for Demilitarization' of Assembled Chemical Weapons at Blue Grass Army Depot (hereinafter referred to as the Blue Grass EDS Report) in September 2002, several engineering design tests had not been completed in time to be inclucled (NRC, 2002~.
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discharge conveyor. · The Eco Logic technology package (with participants Foster Wheeler, Kvaerner, and E]
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Because the fullscale design incorporates additional processing steps and better condensation of offgases, AEA estimates and the committee analysis agrees that the adjusted DREs would be in excess of 99.999 percent for both TNT and tetryl. During steady-state operation with a continuous feed of tetrytol to the anolyte vessel, the electrochemical efficiency was maintained at 40-50 percent.
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4, which gives seven specific reasons in support of the committee's conclusion that major difficulties related to maturity will be encountered. ECO LOGIC EFFLUENT EVAPORATION TESTING One part of the Eco Logic EDS II study plan that was not completed prior to the issuance of the Blue Grass EDS Report was the effluent evaporation testing for the Foster Wheeler TW-SCWO (Eco Logic, 2001a; NRC, 2002~.
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confirm the viability of the evaporator/crystallizer/fiIter press system design presented in the Eco [Logic engineering design package (EDP) (Eco Logic, 2001b)
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The SCWO system for treatment of hydrolysates in EDS II testing exhibited frequent spiking in hydrocarbon and carbon monoxide concentrations in the off3Concerns about scale-up apply to both the General Atornics SCWO reactor design for GATS and the Foster Wheeler TW-SCWO design for the Eco Logic technology package.
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From page 7... ...
If this issue is resolved, the committee believes that the Eco Logic package could provide an effective and safe means for destroying the assembled chemical weapons. Page 7 Since then, Foster Wheeler has completed long-duration tests of the TW-SCWO reactor, mostly with hydrolysates of VX and HD simulants but also with hycirolysate of actual VX agent, and final reports have become available (Foster Wheeler 2002b, 2002c, 20026~.
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From page 8... ...
For the final 500-hour campaign with HD simulant hydrolysates, three additional changes were made to the system: The injector used in the GB campaign was reinstalled in the reactor. Foster Wheeler judged this injector to be in better condition than the injector employed in the VX campaign r > t .
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From page 9... ...
Each issue and its applicability to the TW-SCWO as well as the CATS SCWO reactor are discussed in the following paragraphs. Operability Issues Foster Wheeler has tried several approaches to solving the HC and CO spiking problem experienced with the TW-SCWO system of the Eco Logic technology package.
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From page 10... ...
The lack of understanding of the cause or causes of the spiking problem raises questions about the use of the TW-SCWO reactors in the Eco Logic technology package at a Blue Grass facility, even if they are used at the size and throughput rates recently tested. Foster Wheeler's plans to scale up the reactors, with the inside diameter increasing from 6.07 inches to ~ ~ inches, will probably exacerbate the problem.
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From page 11... ...
The final permitting approach and the applicable and relevant rules used can only be completely defined by the permitting authorities when they review the permit application. There is some concern on the part of the committee that current performance will need to be improved in order to meet HC emissions standards if the hazardous waste combustor stanclards are applied.
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From page 12... ...
The TW-SCWO reactor design has also been modified to five liner segments of equal length rather than a short upper liner and a longer lower liner. Foster Wheeler believes that this will simplify disassembly and liner replacement and provide for better support of the liners.
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From page 13... ...
5. The results of the Foster Wheeler TW-SCWO reactor tests indicate that making changes in the design or operating conditions (such as flow rate of feed or choice of oxidant)
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