Krško NPP Experience with RTD Bypass Elimination

نویسندگان

چکیده

This paper describes Krško experience and problems that had to be resolved with RTD Bypass Elimination project (RTDBE). Following bypass manifold isolation valve leak in 2008, decided perform RTDBE modification on reactor coolant system narrow range temperature measurement system. The installation was performed during Outage 2013. Soon after the plant returned power, newly configured channels showed OPΔT trip oversensitive spikes caused by auxiliary relay operation cabinets nearby. solution reconfigure filtering constants filter out short-term signal. After almost full operating cycle of trouble-free operation, failures started occurring cold leg, which high frequency vibrations (3-5 kHz) induced pumps. To resolve failures, ordered re-design RTDs add robustness specific qualification high-frequency vibration environment. Improved were installed 2016 one minor deviations.

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ژورنال

عنوان ژورنال: Energija

سال: 2022

ISSN: ['0354-8651', '2812-7528']

DOI: https://doi.org/10.37798/2019682-3193