Spent fuel pool sensors

摘要

In March 2012, the USNRC mandated that all US nuclear power plants must install spent fuel pool water level gauges within two fuel cycles or by the end of 2016. The stations need to install gauges at three water levels: at a height suitable for normal operations, a level that is adequate to provide substantial radiation shielding for someone standing on the operating deck, and a level where the fuel is just covered. It also specified that they install a main and a backup level instrument, provide a display in an accessible area, and provide independent electrical power to each instrument channel, and an alternate remote power connection (see figure).