Back to home
Functional modeling for operating procedure tasks of a Chemical and Volume Control System in PWR   SONG Mengchu1, YANG Ming1, and GOFUKU Akio2   1. College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001 China (song_mengchu@163.com) 2. Graduate School of Natural Science and Technology, Okayama University, 3-1-1, Tsushima-Naka, Kita-ku, Okayama, 700-8530 Japan (fukuchan@sys.okayama-u.ac.jp)   Abstract: Most of operator tasks in the nuclear power plants (NPPs) are performed by following a set of prescribed procedures, where human errors might occur in any phase of procedure. With the introduction of more operational information and automation into the main control rooms by digital technologies, operators are becoming easier to lose their position perception in the procedures and situation awareness when they execute operations. By employing Multilevel Flow Modeling (MFM), a strategy is presented for improving situation awareness and information sharing among operators when they implement operating procedures. Taking the Chemical and Volume Control System (CVCS) in PWR as an example, the procedure tasks of restoring CVCS operation from malfunctions are analyzed firstly, and then MFM models of CVCS in different task phases are presented. Finally, the potential applications are discussed of the proposed technology for emergency operating procedures management, human influence analysis and system reliability monitoring . Keyword: operating procedures; human errors; Multilevel Flow Modeling; phased tasks
	Click here for viewing full text.