Hazard rate for a two-channel protective system subject to a high demand rate

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A basic figure of merit associated with a protective system for an industrial plant is the number of accidents expected to occur in the plant within a given period of time, with the system installed. By definition, in a plant equipped with a protective system, an accident can only happen if an initiating event (a demand) occurs while the protective system is unavailable, that is, while it is in one of its possible failed states. This means that the hazard rate or accident frequency depends on the demand rate and on the unavailability of the protective systems. It has long ... continued below

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Pages: 7

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Oliveira, L.F.; Youngblood, R. & Melo, P.F.F. January 1, 1989.

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Description

A basic figure of merit associated with a protective system for an industrial plant is the number of accidents expected to occur in the plant within a given period of time, with the system installed. By definition, in a plant equipped with a protective system, an accident can only happen if an initiating event (a demand) occurs while the protective system is unavailable, that is, while it is in one of its possible failed states. This means that the hazard rate or accident frequency depends on the demand rate and on the unavailability of the protective systems. It has long been recognized that the demand rate influences the unavailability of the protective system, and practical expressions incorporating that effect have been developed for single-channel and multi-channel protective systems. In a previous paper a Markovian approach was used to derive analytical expressions for the evaluation of the plant hazard rate for a single-channel protective system, properly accounting for the effects of the demand and the repair rates. In this paper, we present an extension of that model to the case of a plant equipped with a two-channel protective system. 5 refs., 3 figs.

Physical Description

Pages: 7

Notes

NTIS, PC A02/MF A01 - OSTI; 1.

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  • 10. international conference on Structural Mechanics in Reactor Technology (SMIRT), Anaheim, CA, USA, 14-18 Aug 1989

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  • Other: DE89016123
  • Report No.: BNL-42823
  • Report No.: CONF-890855-50
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 5850344
  • Archival Resource Key: ark:/67531/metadc1095681

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • January 1, 1989

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  • Feb. 18, 2018, 3:59 p.m.

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  • April 24, 2018, 11:57 a.m.

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Oliveira, L.F.; Youngblood, R. & Melo, P.F.F. Hazard rate for a two-channel protective system subject to a high demand rate, article, January 1, 1989; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc1095681/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.