Empirical validation of the conceptual design of the LLNL 60-kg contained-firing facility

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Description

In anticipation of increasingly stringent environmental regulations, Lawrence Livermore National Laboratory (LLNL) is proposing to modify an existing facility to add a 60-kg firing chamber and related support areas. This modification will provide blast-effects containment for most of its open-air, high-explosive, firing operations. Even though these operations are within current environmental limits, containment of the blast effects and hazardous debris will further drastically reduce emissions to the environment and minimize the hazardous waste generated. The major design consideration of such a chamber is its overall structural dynamic response in terms of its long-term ability to contain all blast effects from ... continued below

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44 p.

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Pastrnak, J.W.; Baker, C.F. & Simmons, L.F. February 24, 1995.

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Description

In anticipation of increasingly stringent environmental regulations, Lawrence Livermore National Laboratory (LLNL) is proposing to modify an existing facility to add a 60-kg firing chamber and related support areas. This modification will provide blast-effects containment for most of its open-air, high-explosive, firing operations. Even though these operations are within current environmental limits, containment of the blast effects and hazardous debris will further drastically reduce emissions to the environment and minimize the hazardous waste generated. The major design consideration of such a chamber is its overall structural dynamic response in terms of its long-term ability to contain all blast effects from repeated internal detonations of high explosives. Another concern is how much other portions of the facility outside the firing chamber must be hardened to ensure personnel protection in the event of an accidental detonation while the chamber door is open. To assess these concerns, a 1/4-scale replica model of the planned contained firing chamber was engineered, constructed, and tested with scaled explosive charges ranging from 25 to 125% of the operational explosives limit of 60 kg. From 16 detonations of high explosives, 880 resulting strains, blast pressures, and temperatures within the model were measured to provide information for the final design.

Physical Description

44 p.

Notes

OSTI as DE95009459

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  • Other Information: PBD: 24 Feb 1995

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  • Other: DE95009459
  • Report No.: UCRL-ID--119432
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/45566 | External Link
  • Office of Scientific & Technical Information Report Number: 45566
  • Archival Resource Key: ark:/67531/metadc686412

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Office of Scientific & Technical Information Technical Reports

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  • February 24, 1995

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • Feb. 16, 2016, 6:46 p.m.

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Pastrnak, J.W.; Baker, C.F. & Simmons, L.F. Empirical validation of the conceptual design of the LLNL 60-kg contained-firing facility, report, February 24, 1995; California. (digital.library.unt.edu/ark:/67531/metadc686412/: accessed April 26, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.