A workplace framework linked to the regulator
NOM-012-STPS-2012 applies to Mexican workplaces handling ionising radiation sources. The official catalogue confirms that it remains current. It does not replace nuclear or health authorisations: it connects workplace duties with the competent regulator’s requirements and the conditions of the relevant licence.
Assessment needs the radiological characteristics of each source and the activities performed. Ionising radiation risk is not controlled merely by a sign on a door. The organisation must know who works in each area and what exposure could occur during operation, maintenance or an incident.
Programme, manual and responsibilities
The workplace requires a radiation safety and protection programme and an appropriate manual. The programme identifies activities, timing, responsible people, resources and coordination between departments. It also includes incident and accident investigation to support correction of underlying causes.
The standard provides for a radiation safety officer or, as appropriate, the person responsible for X-ray equipment operation, with necessary supporting personnel. Assigning a name alone does not fulfil these functions without checking competence and requirements under the applicable regime.
Measurement and dosimetry need follow-up
Suitable measuring equipment, calibration and maintenance are required, along with dosimeters where specified by the licence. Dosimetry results must be evaluated, recorded and followed up. Exposed personnel receive information about their annual and accumulated dose.
For example, distributing dosimeters without organising readings and investigating deviations turns an ongoing control into paperwork. Review should connect results, working conditions and corrective measures, keeping exposure as low as possible within the radiation protection framework.
Emergencies and health surveillance
The radiological emergency plan addresses foreseeable scenarios, responsibilities, exposure restrictions and medical assistance. Responders require training and authorisation appropriate to their role. Open sources also require consideration of contamination of people, materials and waste.
Health surveillance and decisions about continued exposure belong to qualified professionals and the applicable regulatory regime. This entry does not calculate shielding, permissible doses or source recovery procedures. Those decisions require technical information and specifically authorised personnel, with workplace arrangements consistent with the actual sources and licence conditions.
