The Dynamic Balancer electrical safety systems

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Description

The Pantex Plant Dynamic Balancer is used to identify physical imbalance in some weapon systems. This study was conducted at the request of the US Department of Energy/Albuquerque Operations Office (USDOE/AL) Dynamic Balancer Project Team to identify the electrical conditions required for motor over-speed to occur and to discuss the functions of the various electrical protective features associated with the Dynamic Balancer (DB). As is shown through the development of a fault tree, numerous electrical and human failures are required for over-speed conditions to occur. As directed by the Project Team, no effort was made to develop detailed fault trees ... continued below

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26 p.

Creation Information

Konkel, H. December 1997.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 15 times . More information about this report can be viewed below.

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  • Los Alamos National Laboratory
    Publisher Info: Los Alamos National Lab., Technology and Safety Assessment Div., NM (United States)
    Place of Publication: New Mexico

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Description

The Pantex Plant Dynamic Balancer is used to identify physical imbalance in some weapon systems. This study was conducted at the request of the US Department of Energy/Albuquerque Operations Office (USDOE/AL) Dynamic Balancer Project Team to identify the electrical conditions required for motor over-speed to occur and to discuss the functions of the various electrical protective features associated with the Dynamic Balancer (DB). As is shown through the development of a fault tree, numerous electrical and human failures are required for over-speed conditions to occur. As directed by the Project Team, no effort was made to develop detailed fault trees for all electrical systems, to quantify basic events in the fault tree, or to develop accident scenarios leading to or resulting from over-speed. The Pantex Building 12-60, Bay 2, facility electrical circuits and grounding are described, and potential hazards are discussed. DB motor over-speed is a safety concern, and therefore, the controls that limit this condition are described and discussed in detail. Other safety-significant electrical circuits are discussed as well. These safety systems also are described in the facility Basis for Interim Operation. A potential for a motor over-speed that is not sensed by the standard safety protective systems does exist. This fault pathway is discussed, and recommendations to mitigate its effect are made.

Physical Description

26 p.

Notes

OSTI as DE99000573

Source

  • Other Information: PBD: Dec 1997

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  • Other: DE99000573
  • Report No.: LA-UR--98-1823
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/677010 | External Link
  • Office of Scientific & Technical Information Report Number: 677010
  • Archival Resource Key: ark:/67531/metadc710305

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • December 1997

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • Feb. 25, 2016, 4:39 p.m.

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Konkel, H. The Dynamic Balancer electrical safety systems, report, December 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc710305/: accessed October 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.