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An Investigation on the Minimum Inventory of Human System Interfaces for Plant’s Safe Operation

[+] Author Affiliations
Chih-Wei Yang, Tzu-Chung Yenn, Tsung-Chieh Cheng, Ming-Huei Chen

Institute of Nuclear Energy Research, Taoyuan, Taiwan

Tung-Ming Wu

Taiwan Power Company, Taipei, Taiwan

Paper No. ICONE18-29310, pp. 679-684; 6 pages
  • 18th International Conference on Nuclear Engineering
  • 18th International Conference on Nuclear Engineering: Volume 1
  • Xi’an, China, May 17–21, 2010
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-4929-3
  • Copyright © 2010 by ASME


This paper investigates the minimum inventory (MI) of human system interfaces (HSIs) (i.e. alarms, controls, and displays) for plant’s safe operation and represents the analytic procedure on the MI of HSIs developed for the digital instrumentation and control (I&C) equipments in the main control room (MCR). The MI of HSIs in the MCR indicates the HSIs that the operator always needs available to: (1) monitor the status; (2) perform and confirm a reactor trip; (3) perform and confirm a controlled shutdown of the reactor; (4) actuate safety related systems; (5) analyze failure conditions of the normal HSIs; (6) implement the plant’s emergency operating procedures (EOPs); (7) bring the plant to a safe condition; (8) carry out those operator actions shown to be risk important by the probabilistic risk assessment (PRA). The proposed analytic procedure on the MI of HSIs in this study can be used to (1) identify the MI of HSIs and their design requirements; and (2) addresses design requirements and implementation for the MI of HSIs. The contribution of this study is to describe the MI of HSIs needed to implement the plant’s EOPs, to bring the plant to a safe condition, and to carry out those operator actions shown to be risk important by the PRA.

Copyright © 2010 by ASME



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