SANTA MARIA DE GARONA NPP IC CHALLENGES TO LONG-TERM OPERATION

摘要

Santa Maria de Garona (SMG) Nuclear Power Plant is a GE BWR/3 connected to the grid in 1971 and operated by Nuclenor, S.A. It is owned by two of the largest Spanish electrical utilities, Endesa and Iberdrola, each with 50% ownership. Garona was powered down in December 2012 due to financial reasons and was formally closed for decommissioning in July 2013. One year later, SMG has applied to re-open the plant until 2031. To ensure the continued safe, reliable and efficient operation of a Nuclear Power Plant (NPP), it is essential to address obsolescence, aging and reliability Instrumentation and Control (I&C) Issues, and must therefore take into consideration these three major issues with the following goals: (1) To ensure that current analog and digital I&C systems are not life-limiting issues for the operation of the plant. (2) To implement digital Instrumentation, Information & Control systems (Ⅱ&C) technologies, improving efficiency and performance of the internal work processes. (3) To monitor the main assets of the plant, targeting operation and management costs. This paper will describe the strategy developed for a single unit, in this case the SMG NPP, to face the above mentioned challenges. 1. To address the first issue, a Short-Term planning for the modernization projects has been established to cope with aging, obsolescence and reliability issues. 2. And a Long-Term planning has been established to carry out changes in the plant from the current I&C paradigm to a new Ⅱ&C paradigm which assists in improving the efficiency and reliability while at the same time optimizing costs, consequently supporting a long-term sustainable plant operation approach with new technologies such as Predictive Analytics or Internet of Things (IoT).