Programmable controllers replace relays in MFTF-B personnel-safety interlocks

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Description

This paper describes a new approach for implementing personnel safety interlocks logic using industrial-type programmable controllers. The logic for all personnel safety interlocks except those totally internal to a subsystem is implemented in two non-redundant controllers. A high degree of fail-safe reliability is achieved by augmenting the protective features intrinsic to each controller with those provided by a small amount of external support hardware. The controllers are interfaced to the host computer system via fiber optic data links to enable display of interlock and overall system status on the control room graphic displays. When fully implemented, the controllers will perform ... continued below

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4 pages

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Branum, J. D. October 20, 1981.

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Description

This paper describes a new approach for implementing personnel safety interlocks logic using industrial-type programmable controllers. The logic for all personnel safety interlocks except those totally internal to a subsystem is implemented in two non-redundant controllers. A high degree of fail-safe reliability is achieved by augmenting the protective features intrinsic to each controller with those provided by a small amount of external support hardware. The controllers are interfaced to the host computer system via fiber optic data links to enable display of interlock and overall system status on the control room graphic displays. When fully implemented, the controllers will perform the equivalent of over 2000 discreet relay functions.

Physical Description

4 pages

Notes

NTIS, PC A02/MF A01.

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  • 9. symposium on engineering problems of fusion research, Chicago, IL, USA, 26 Oct 1981

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  • Other: DE82002054
  • Report No.: UCRL-86066
  • Report No.: CONF-811040-45
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 7204767
  • Archival Resource Key: ark:/67531/metadc1449594

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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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  • October 20, 1981

Added to The UNT Digital Library

  • Feb. 10, 2019, 8:45 p.m.

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  • April 26, 2019, 4:48 p.m.

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Branum, J. D. Programmable controllers replace relays in MFTF-B personnel-safety interlocks, article, October 20, 1981; California. (https://digital.library.unt.edu/ark:/67531/metadc1449594/: accessed May 20, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.