Nuclear Regulatory Commission Releases Special Inspection Report on 2021 Alert at the NIST Research Reactor

Nuclear Regulatory Commission Releases Special Inspection Report on 2021 Alert at the NIST Research Reactor

NIST's Center for Neutron Research, in Gaithersburg, Maryland


Credit: NIST


GAITHERSBURG, Md. — The Nuclear Regulatory Commission (NRC) has released a final report of its special inspection of the Feb. 3, 2021, alert at the National Institute of Standards and Technology (NIST) Center for Neutron Research (NCNR). The report confirms that the public was safe at all times during and after the incident, in which a single fuel element was damaged and the reactor automatically shut down. The report details seven apparent violations that the NRC will now examine more closely to determine what enforcement actions will be required.


“NIST takes very seriously the findings of the NRC Special Inspection Team and is committed to taking all corrective actions that will ensure the safe operation of this vital national resource,” said James Olthoff, who is performing the nonexclusive functions and duties of the under secretary of commerce for standards and technology and NIST director. “We have already begun making changes to our organization and procedures, and will work closely with the NRC to make sure an incident like this does not happen again.”


The report verifies information previously reported by NIST and the NRC, including that the reactor exceeded a safety limit for fuel temperature due to the overheating of a single fuel element that was not securely latched into place. The report also confirms and expands on many aspects of NIST’s analysis of the incide ..

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