Fuel misplaced


Print View Posted on: 23 November 2024

Event Date: 20 November 2024 Event Type: Research Reactor
Event Location: Mexico, National Institute for Nuclear Research INES Rating: 0 (Final)

On November 20, 2024, at around 15:00 hours, during the inspection carried out by IAEA safeguards personnel to perform the Criticality test of the MXA-TRIGA Mark III Reactor and verify its reactor configuration, it was detected that in position B-1 of ring B, which should be empty according to the configuration, there is nuclear fuel from position C-1.
As corrective actions, the fuel in position B-1 will be returned to its correct position, after the inspection work on the aluminum coating of the reactor pool is completed and the water level is returned to its normal condition, since it is currently 4.40 m below its normal level.
Finally, this regulatory body was notified on November 21, 2024.

INES Rating: 0 - Below scale (Final) as per 22 November 2024
Release beyond authorized limits? No
Overexposure of a member of the public? No
Overexposure of a worker? No

Contamination spread within the facility? No
Damage to radiological barriers (incl. fuel damage) within the facility? No

Degradation of Defence In-Depth No

Person injured physically or casualty? No
Is there a continuing problem? No

Victor Gonzalez
Comision Nacional de Seguridad Nuclear y Salvaguardias

vmgonzalez@cnsns.gob.mx
https://www.gob.mx/cnsns
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