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By National Research Council, Division on Engineering and Physical Sciences, Board on Army Science and Technology, Committee on Review and Evaluation of Alternative Technologies for the Demilitarization of Assembled Chemical Weapons: Phase II

The software supervisor for Assembled Chemical guns review (PMACWA) of the dept of safety (DOD) asked the nationwide examine Council (NRC) to evaluate the engineering layout experiences (EDSs) constructed through Parsons/Honeywell and normal Atomics for a chemical demilitarization facility to fully cast off the assembled chemical guns on the Pueblo Chemical Depot in Pueblo, Colorado. to complete the duty, the NRC shaped the Committee on evaluate and assessment of other applied sciences for Demilitarization of Assembled Chemical guns: section II (ACW II Committee). This document offers the result of the committee's medical and technical evaluate, so as to help the place of work of the Secretary of protection in opting for the expertise package deal for destroying the chemical munitions at Pueblo.

The committee evaluated the engineering layout programs proposed through the know-how companies and the linked experimental stories that have been played to validate unproven unit operations. an important a part of the trying out software concerned increasing the know-how base for the hydrolysis of full of life fabrics linked to assembled guns. This approach was once a priority expressed through the Committee on evaluation and evaluate of other applied sciences for Demilitarization of Assembled Chemical guns (ACW I Committee) in its unique file in 1999 (NRC, 1999). the current examine came about because the experimental reviews have been in growth. sometimes, checks for a number of the assisting unit operations weren't accomplished in time for the committee to include effects into its assessment. In these circumstances, the committee pointed out and mentioned capability areas of difficulty in those operations. in response to its services and its competitive data-gathering actions, the committee used to be in a position to behavior a finished evaluate of the try out info that have been accomplished for the final method layout. This document summarizes the study.

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Extra resources for Analysis of Engineering Design Studies for Demilitarization of Assembled Chemical Weapons at Pueblo Chemical Depot (The Compass series)

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Composition B, which is produced at HAAP and is readily available, was chosen for the initial experiments. The disposal of hydrolysate is covered under existing permits for handling waste from the production of Composition B. Because foaming is difficult to control in Composition B, the two test runs with this material provided a good test of the efficacy of measures designed to control foaming. The problems that occurred were typical of any start-up operation. For example, the Acrison feeder, which is used to 22 ANALYSIS OF ENGINEERING DESIGN STUDIES FOR DEMILITARIZATION OF ASSEMBLED CHEMICAL WEAPONS AT PUEBLO deliver Composition B to the reactor, failed to operate because of a software error when it was loaded with 500 lb of material.

The committee believes that the test plan is well designed to determine acceptable parameters on the full-scale reactor at HAAP. Systemization of the 2,000-gallon hydrolysis reactor at HAAP was completed within 4 months. Composition B, which is produced at HAAP and is readily available, was chosen for the initial experiments. The disposal of hydrolysate is covered under existing permits for handling waste from the production of Composition B. Because foaming is difficult to control in Composition B, the two test runs with this material provided a good test of the efficacy of measures designed to control foaming.

Nitrocellulose-based propellant grains contain other components that are released as the nitrocellulose breaks down. Even before it is completely broken down, infiltration of caustic into the partially decomposed propellant grains may allow the nitroglycerin inside the grains to come in contact with the caustic medium and react. In an effort to increase the reaction rate of the energetic materials in the hydrolysis reactor, strong caustic solutions (pH greater than 12), elevated temperatures (60°C to 155°C [140°F to 311°F]), and elevated pressures (up to 14 atm) have been used.

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