Potential uncontrolled access to room with radiation greater than 1000 mR / hr


Print View Posted on: 19 March 2019

Event Date: 12 February 2019 Event Type: Power Reactor
Event Location: Mexico, LAGUNA VERDE-1 INES Rating: 2 (Provisional)

Event Description

On February 12, 2019, while preparations for leak testing were made to valve 1-FPCC-MV-7948 by predictive maintenance personnel, they reported to the technician of the reactor control point that the shield that serves as a barrier to controlling the area with high radiation> 1000 mR / hr was not in place. The last access to the room was registered at 4:20 p.m. when the key of the lock was used. The key was returned at 7:00 p.m. to the PR technician on duty.

INES Rating: 2 - Incident (Provisional) as per 22 February 2019
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 Yes

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
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