OBOE containment prospectus

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The OBOE series of experiments presents a new fielding concept for LLNL subcritical experiments. An experimental alcove will be reused for many different experiments. Each individual experiment will be conducted within a steel experimental vessel. After each experiment, the vessel will be moved to the back of the alcove and entombed in grout. The alcove is designed with sufficient space to entomb 12 experiment vessels. Each experiment in the OBOE series of experiments is composed of one experimental package. Each experimental package will have high explosive (HE) and special nuclear material (SNM) in a subcritical assembly. Each experimental package will ... continued below

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4.7 Megabytes pages

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Burkhard, N R November 19, 1999.

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Description

The OBOE series of experiments presents a new fielding concept for LLNL subcritical experiments. An experimental alcove will be reused for many different experiments. Each individual experiment will be conducted within a steel experimental vessel. After each experiment, the vessel will be moved to the back of the alcove and entombed in grout. The alcove is designed with sufficient space to entomb 12 experiment vessels. Each experiment in the OBOE series of experiments is composed of one experimental package. Each experimental package will have high explosive (HE) and special nuclear material (SNM) in a subcritical assembly. Each experimental package will be placed in a steel experimental vessel within the OBOE zero-room. Each experiment will be detonated inside its experimental vessel in the OBOE zero-room that is formed by a steel and concrete barrier at the entrance to the U1a.102C drift. The containment plan for the OBOE series of experiments utilizes a two containment vessel concept. The first containment vessel is formed by the primary containment barrier that seals the U1a.102C drift. The second containment vessel is formed by the secondary containment barrier in the U1a.100 drift. While it is likely that the experiment vessel will contain the SNM from an experiment, the containment plan for the OBOE series only assumes that the steel experiment vessel provides shock mitigation and is a heat sink for the heat produced by the detonation of the HE. It is possible that one or more of the experimental vessels may seep SNM in the zero-room from a failure of a seal on the vessel. We are presenting a containment plan for the entire series of OBOE experiments. At this time, we do not know exactly how many experiments will actually be conducted in the OBOE series. However, we do know that the maximum number of experiments in the OBOE series is 12. After the final experiment in the OBOE series, a larger experiment will be conducted in the U1a.102C alcove. This experiment will not be part of the OBOE series and a separate containment plan will be presented to the CRP for this experiment. We do not intend to present individual containment plans for each experiment of the OBOE series as long as each experiment falls within the parameters given in this document. If an experiment in the OBOE series falls outside the parameters given in this document, a containment plan for that experiment will be presented to the CRP for a full review.

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4.7 Megabytes pages

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  • Other Information: PBD: 19 Nov 1999

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  • Report No.: UCRL-ID-134378
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/14794 | External Link
  • Office of Scientific & Technical Information Report Number: 14794
  • Archival Resource Key: ark:/67531/metadc628188

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  • November 19, 1999

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • May 6, 2016, 1:48 p.m.

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Burkhard, N R. OBOE containment prospectus, report, November 19, 1999; California. (digital.library.unt.edu/ark:/67531/metadc628188/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.