Esteban Zone

Senior Probabilistic Safety Assessment Analyst
Cernavoda 3 & 4 Nuclear Power Plants – New Builds | Romania

Coordinated a multidisciplinary team in performing probabilistic safety assessments (PSA) for CANDU 6 reactors as part of the new build projects for Cernavoda Units 3 and 4. Responsibilities included evaluating plant enhancements and design modifications to ensure compliance with international nuclear safety standards and supporting risk-informed decision-making processes.

Coordination of quality management across all renewable energy projects of the company, actively involved throughout the entire project lifecycle—from development through execution and closure.

Led the comprehensive quality management across renewable energy projects and operational centers, ensuring alignment with the company’s Integrated Management System (IMS). Key responsibilities included:

• Ensuring and executing quality management actions throughout the project lifecycle.
• Developing, coordinating, and executing quality assurance plans and audits.
• Implementing and monitoring performance indicators to assess compliance with quality plans, objectives, and risk-related action plans.
• Defining and deploying quality objectives and targets for critical processes.
• Drafting, disseminating, and implementing quality procedures.
• Managing findings and non-conformities in projects, construction sites, and operational centers.
• Following up on quality recommendations, improvement proposals, and lessons learned.
• Mapping and formalizing current processes to ensure consistency and traceability.
• Supporting the implementation and maintenance of the IMS; participating in internal and external audits.
• Contributing to strategic company projects from a quality perspective.
• Assisting in process redesign and continuous improvement initiatives.
• Promoting innovation and implementing agile tools for quality management.
• Coordinating and participating in quality and risk management committees.
• Facilitating risk management processes, supporting process owners in identifying and analyzing business and project risks in line with the Enterprise Risk Management framework.
• Delivering training sessions on quality assurance, process management, and risk analysis.
• Preparing follow-up reports and managing performance indicators.
• Supporting the development and effectiveness of management systems, fostering staff engagement in continuous improvement.

Led the physical separation of electric trains within the framework of the UI Life Extension Project at Atucha I Nuclear Power Plant. Responsible for project planning, coordination, and execution, ensuring compliance with safety standards and operational requirements in a nuclear environment.

• Author of several guides for the management of severe accidents outside the design basis at the Atucha I and II Nuclear Power Plants.
• Nuclear Safety Assessments of all Permanent and Temporary Facility Modifications, mainly at CNAI, but also at CNAII.
• Updating the Fire PSA of the Atucha I Nuclear Power Plant.
• Management in the resolution of various 'Easy Fixes' to obtain the seismic qualification of the Atucha I Nuclear Power Plant.
• Update of the PSA modeling for revision 6 of Internal Events. Adequacy of the modeling for the implementation of the Risk Watcher software.
• Updating and analysis of Human Reliability data for the PSA of other Plant States (Human Reliability Assessment for Shutdown PSA).
• Author of various reports on Nuclear Safety.
• Analysis of fault data referring to the Atucha I and II plants. Probabilistic Security Analysis. Safety Assessment for Permanent and Temporary Installation Modifications.
• Security Assessments for Modifications to Mandatory Documentation.
• Development and monitoring of events within the site.
• Liaison and management to carry out medium and long-term work with different sectors of the plant and Headquarters, highlighting the permanent collaboration with personnel from the Headquarters Engineering Management for the seismic qualification of Atucha I.
• Coordination of work teams.
• PSA documentation update.
• Collaboration with other managers.
• Collaboration with licensing personnel for plants.
• Participation in workshops related to Probabilistic Security Analysis and use of Risk Spectrum software.
• Permanent link between the company and suppliers for purchasing management.
• Currently, I continue to perform tasks as a Quality Inspector (QI) during scheduled shutdowns, mainly Atucha I, and at the request of the Quality Assurance Management.

• Coordination and monitoring of audits and corrective actions to ensure compliance with quality standards and continuous improvement across renewable energy projects.

• Adjunct professor of the subject 'Electromagnetism'.

• Responsible for the elaboration of inspection reports, coordination of electrical and electronic maintenance tasks in small and medium-sized vessels.
• 7 people in charge.

• Responsible for project development and analysis, follow-up, supplier management, etc.

• Responsible for the installation and repair of electronic controllers for self-elevating machines.

• Responsible for the residential electrical installations in the interior of the Province of Corrientes.

• Responsible for the installation and maintenance of satellite earth stations in the NEA region.