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NRC Denies Petition for Rulemaking Related to Power Reactor In-Core Monitoring

The NRC has denied a petition for rulemaking requesting that the NRC require all holders of operating licenses to operate plants with in-core temperature-monitoring devices located at different elevations and radial positions throughout the reactor core. The petitioner stated that the use of in-core temperature-monitoring devices would help operators track the progression of core damage and manage accidents. The petition was docketed by the NRC on April 24, 2015. The NRC has denied the petition because staff has concluded that current regulations provide a sufficient level of safety and additional requirements for in-core temperature-monitoring devices are not needed. In particular, the NRC concluded that current reactor instrumentation is adequate to detect and respond to accidents prior to the onset of significant core damage.

To view the Federal Register notice, click here