Ageing management strategies for instrumentation and control equipment in NPPs

Ageing management strategies for instrumentation and control equipment in NPPs 1 corresp first-author Corresponding author. E-mail address: benzeyad86@yahoo.com Corresponding author. E-mail address: benzeyad86@yahoo.com benzeyad86@yahoo.com 1 Department of Engineering Physics, Tsinghua University, Beijing 100084, China Department of Engineering Physics, Tsinghua University, Beijing 100084, China This paper aims to explain main ageing stressors and effects on instrumentation and control (I&C) components followed by ageing management strategies through developed design such as using freewheeling diode to eliminate relays contact ageing due to inductive loads, or through traditional practices and new online monitoring where I&C components can be checked and assessed remotely while the plant is operating. It also includes some recommendations for obsolescence management for special I&C components like microcontrollers and programmable logic controllers (PLCs). Ageing management instrumentation and control online monitoring References International Atomic Energy Agency . Power reactor information system , http://pris.iaea.org/Public/ . Power reactor information system International Atomic Energy Agency . IAEA-TECDOC-1188: Assessment and management of ageing of major nuclear power plants components important to safety: In-containment instrumentation and control cables , Vienna , 2000 , 1 : 11 - 15 . IAEA-TECDOC-1188: Assessment and management of ageing of major nuclear power plants components important to safety: In-containment instrumentation and control cables Hashemian H M . Science direct , 2010 , 240 : 3783 - 3788 . Science direct International Atomic Energy Agency . NS-G-2.12: Ageing Management for Nuclear Power Plants , IAEA , Vienna , 2009 , 3 - 10 . International Atomic Energy Agency . IAEA-TECDOC-1147: Management of ageing of I&C equipment in nuclear power plants , IAEA , Vienna , 2000 , 11 - 24 . International Atomic Energy Agency . IAEA-TECDOC-1402: Management of life cycle and ageing at nuclear power plants: Improved I&C maintenance , IAEA , Vienna , 2004 , 14 - 19 . John W. Jewett , Raymond A. Serway . Physics for scientists and engineers with modern physics , Canada , 2008 , 900 - 903 . Physics for scientists and engineers with modern physics Arkadov G V , Barinov N I , Belolzov A V , et al . Experience in management of equipment service life in Russian nuclear power plants, country report in IAEA-TECDOC-1402 , 2004 , C5 : 116 - 119 . Experience in management of equipment service life in Russian nuclear power plants, country report in IAEA-TECDOC-1402 Hashemian H M . Maintenance of Process Instrumentation in Nuclear Power Plants , Germany , 2006 . Maintenance of Process Instrumentation in Nuclear Power Plants H.M. Hashemian . I&C ageing management in US nuclear power plants, country report in IAEA-TECDOC-1402 , 2004 , C7 : 131 - 134 . I&C ageing management in US nuclear power plants, country report in IAEA-TECDOC-1402 International Atomic Energy Agency . NP-T-1.1.: Online monitoring for improving performance of nuclear power plants part 1: Instrument channel monitoring , IAEA , Vienna , 2008 , 18 - 20 . NP-T-1.1.: Online monitoring for improving performance of nuclear power plants part 1: Instrument channel monitoring International Atomic Energy Agency . NP-T-1.2, Online monitoring for improving performance of nuclear power plants part 2: Process and component condition monitoring and diagnostics , IAEA , Vienna , 2008 , 2 - 6 . Eiler J . Country report on I&C ageing management in the Paks Npp, country report in IAEA-TECDOC-1402 , 2004 , C2 : 88 - 90 . Country report on I&C ageing management in the Paks Npp, country report in IAEA-TECDOC-1402 Manners S . Ageing management for I&C on French NPP, country report in IAEA-TECDOC-1402 , 2004 , C1 : 76 - 79 . Ageing management for I&C on French NPP, country report in IAEA-TECDOC-1402 Yamamoto T . Current status of cable ageing management and research in Japan, country report in IAEA-TECDOC-1402 , 2004 , C3 : 97 - 102 . Current status of cable ageing management and research in Japan, country report in IAEA-TECDOC-1402 10.13538/j.1001-8042/nst.23.118-123 2012-01-10 2012-04-20 2021-01-19 2012 Nuclear Science and Techniques 02 23