As nuclear plants faced competition from cheaper gas-fired generation and renewable resources, the number of planned closures rose in the last decade. That prompted the NRC to review its safety regulations, which it said did not differentiate between commercial operation and plants that either had defueled or permanently closed. Among the issues that needed review, the NRC said, were emergency preparedness, physical security, cybersecurity, training requirements, the use of decommissioning trust funds and drug and alcohol testing.
