Analysis of Engineering Design Studies for Demilitarization of Assembled Chemical Weapons at Pueblo Chemical Depot (2001) / Chapter Skim
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5. General Findings and Recommendations
5. General Findings and Recommendations
Pages 71-75
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From page 71... ...
However, some of the process steps remain to be demonstrated. The Parsons/Honeywell technology process provides effective means to: disassemble munitions by a modified baseline disassembly process that removes the agent from the projectile bodies by washout destroy chemical agent HD to a 99.9999 percent DRE by hydrolysis destroy fuzes with the energetics rotary deactivator destroy energetic materials to a 99.999 percent DRE 71 by hydrolysis in 15 weight percent hot caustic solution, provided that the following safeguards are observed: different energetic materials are not processed together precautions are taken to ensure that all emulsified TNT is completely destroyed · control the very large volumes of off-gases emitted from the biotreatment plant through a CATOX unit However, the committee notes that the effectiveness of some process steps, including removal of energetics from munitions, has not been tested during the EDS.
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From page 72... ...
destroy chemical agent HD to a 99.9999 percent DRE by hydrolysis destroy fuzes with the energetics rotary hydrolyzer destroy energetic materials to a 99.999 percent DRE by hydrolysis in 15 weight percent hot caustic solution, provided that the following safeguards are observed: different energetic materials are not processed together precautions are taken to ensure that all emulsified TNT is completely destroyed · provide effective 5X-level decontamination for munition bodies through the use of an electrically heated discharge conveyor readily control the very low volumes of off-gases produced through activated carbon adsorption systems For dunnage, the materials are shredded and reduced in size to 1.0 mm. The slurry is then fed into the SCWO reactors to destroy all the dunnage.
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From page 73... ...
the particle size reduction of energetics that must be achieved for proper operation · the solubility of energetics in specific alkaline solutions · process design of the unit operation and the identification of processing parameters (such as the degree of agitation and reactor residence time) necessary for complete hydrolysis the characterization of actual products and by-products of hydrolysis as a function of the extent of reaction the selection of chemical sensors and process control strategies to ensure that the unit operation following hydrolysis can accept the products of hydrolysis development of a preventative maintenance program that minimizes the possibility of incidents during the cleanup of accumulated precipitates The PMACWA has undertaken an extensive technology program in support of this finding.
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From page 74... ...
General Finding 12. The "optimum" system for a particular chemical weapons storage depot might include a combination of unit operations from the technology packages considered in this report.
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From page 75... ...
General Recommendation 6. Simultaneous processing of different types of energetic materials should not be performed until there is substantial evidence that the intermediates formed from the hydrolysis of aromatic nitro compounds will not combine with M28 propellant additives or ordnance fuze components to form extremely sensitive explosives, such as lead picrate (see General Finding 4~.
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