Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2012, Vol. 23 ›› Issue (2): 118-123 doi: 10.13538/j.1001-8042/nst.23.118-123

• NUCLEAR ENGINEERING • Previous Articles     Next Articles

Ageing management strategies for instrumentation and control equipment in NPPs

ALSHAKETHEEP Tariq, LIU Jingquan   

  1. Department of Engineering Physics, Tsinghua University, Beijing 100084, China
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ALSHAKETHEEP Tariq, LIU Jingquan. Ageing management strategies for instrumentation and control equipment in NPPs.Nuclear Science and Techniques, 2012, 23(2): 118-123     doi: 10.13538/j.1001-8042/nst.23.118-123

Abstract:

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).

Key words: Ageing management, instrumentation and control, online monitoring