Ageing management strategies for instrumentation and control equipment in NPPs

NUCLEAR ENGINEERING

Ageing management strategies for instrumentation and control equipment in NPPs

ALSHAKETHEEP Tariq，

LIU Jingquan

Nuclear Science and Techniques

Vol.23, No.2

pp.118-123

Published in print 20 Apr 2012

DOI：10.13538/j.1001-8042/nst.23.118-123

37400

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 managementinstrumentation and controlonline monitoring

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