Modular reliability modeling of the TJNAF personnel safety system

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Description

A reliability model for the Thomas Jefferson National Accelerator Facility (formerly CEBAF) personnel safety system has been developed. The model, which was implemented using an Excel spreadsheet, allows simulation of all or parts of the system. Modularity of the model's implementation allows rapid {open_quotes}what if{open_quotes} case studies to simulate change in safety system parameters such as redundancy, diversity, and failure rates. Particular emphasis is given to the prediction of failure modes which would result in the failure of both of the redundant safety interlock systems. In addition to the calculation of the predicted reliability of the safety system, the model ... continued below

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16 KILOBYTES pages

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Cinnamon, J. & Mahoney, K. August 1, 1997.

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Description

A reliability model for the Thomas Jefferson National Accelerator Facility (formerly CEBAF) personnel safety system has been developed. The model, which was implemented using an Excel spreadsheet, allows simulation of all or parts of the system. Modularity of the model's implementation allows rapid {open_quotes}what if{open_quotes} case studies to simulate change in safety system parameters such as redundancy, diversity, and failure rates. Particular emphasis is given to the prediction of failure modes which would result in the failure of both of the redundant safety interlock systems. In addition to the calculation of the predicted reliability of the safety system, the model also calculates availability of the same system. Such calculations allow the user to make tradeoff studies between reliability and availability, and to target resources to improving those parts of the system which would most benefit from redesign or upgrade. The model includes calculated, manufacturer's data, and Jefferson Lab field data. This paper describes the model, methods used, and comparison of calculated to actual data for the Jefferson Lab personnel safety system. Examples are given to illustrate the model's utility and ease of use.

Physical Description

16 KILOBYTES pages

Notes

INIS; OSTI as DE97007222

Source

  • 17. IEEE particle accelerator conference, Vancouver, British Columbia (CA), 05/12/1997--05/16/1997; Other Information: Supercedes Report DE97007222; PBD: 1 Aug 1997

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  • Other: DE97007222
  • Report No.: DOE/ER/40150-1154
  • Report No.: JLAB-ACE--97-04
  • Report No.: CONF-970503--141
  • Report No.: ON:DE97007222
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 510567
  • Archival Resource Key: ark:/67531/metadc695545

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  • August 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 17, 2017, 6:18 p.m.

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Cinnamon, J. & Mahoney, K. Modular reliability modeling of the TJNAF personnel safety system, article, August 1, 1997; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc695545/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.