Production

Organization of the Maintenance and Repairs Department (DIR)

• Mechanical Maintenance and Repairs Department (SIRM)
  • ensures the execution of the most important mechanical discipline activities from the nuclear and conventional parts of the Power Plant, both during normal operation and during planned or unplanned shutdowns, in order to maintain and improve the state of health of the systems and equipment in the Power Plant, so that the operation of the 2 nuclear units should be done in conditions of safety and nuclear security for personnel, the population and the environment.
  • manages contracts with complete maintenance services for condenser cooling pumps, ventilation systems or lifting installations, as well as other labor contracts necessary to support PMLC. Within the limits of the necessary authorizations and qualifications, SIRM also implements project changes.

• Department of Electrical Maintenance and Repairs, Automation (SIREA)
  • ensures the execution of the most important electrical discipline and C&I activities from the nuclear and conventional parts of the Power Plant (repairs of Nuovo Pignone, Marconi, DCC, DCS, SDS, PDC, CCTV, Automation in general – pressures, flows, level, temperature measurement, etc.) , both during normal operation, as well as during planned or unplanned shutdowns, in order to maintain and improve the health of the systems and equipment in the Power Plant, so that the operation of the 2 nuclear units is carried out in conditions of safety and nuclear security for personnel , population and environment.
  • manages the contracts with full maintenance services for the seismic monitoring system, as well as other labor contracts necessary to support the PMLC. Within the limits of the necessary authorizations and qualifications, SIREA also implements project modifications (in U1OP22 the display system from CCP Ramteck is replaced, the power output transformers are replaced).

• General Services Section (SSG)
  • Provides support services, through own staff and service contracts, in protected premises U0/U1/U2, DICA: assembling/dismantling ventilated tents – carpentry activities, cleaning of indoor equipment – heat exchangers, basins, tanks, metal constructions, underwater works , execution of labels with a pantograph machine, maintenance of sanitary installations – water, sewage, heating, maintenance and repairs of door closing systems, maintenance of refrigeration equipment, maintenance of air conditioning, exchange of aggregate ventilation filters, decontamination;
  • Maintenance of the material condition of technological spaces, green spaces, roads and administrative – management of household and recyclable waste: paint metal structures and buildings, maintenance of civil structures, special nuclear paint, thermal insulation pipes/equipment, fire protection structures/equipment, thermal waterproofing pipes/ equipment, erected/dismantled scaffolding.

• Work Preparation Section (SPL)
  • Prepares the work packages necessary to implement the activities in the field;
  • It provides the working groups with all the technical information, work instructions and documents necessary for a quality implementation;
  • Ensure the DIR interface with DT and DCL;
  • Continuously models the processes in order to obtain maximum efficiency in the process of evaluation, implementation and closing of the maintenance activities;
  • Ensures the reservation/generation of the procurement process for spare parts and all materials necessary for the implementation of the activities;
  • Ensures through the PUC the follow-up of the implementation of RIAFs for the purpose of maintaining control of the project configuration, as well as for the purpose of updating BOMs (Bill of Materials);
  • Manages the spare parts budget;
  • Ensures the closure of project implementation activations and activities involving welding falling under the ISCIR prescriptions, ensures timely closure of activities implemented in non/planned shutdowns;
  • Manages through the PUC the smooth running of the service contracts within the DIR;
  • It manages through PUC and defined processes, the risks specific to the activities to be implemented, especially the risk of maintenance.

• Maintenance and Repair Support Service (SSIR)
  • DIR performance monitoring;
  • DIR Training Programs;

• Elaboration of maintenance and repair procedures/PPLM DIR Courses;

• • Initiating the purchase of DIR services and tools/devices;
  • Simple engineering solutions;
  • Cranes/lifting installations;
• Implementation of PLIM TG program, coordination of Planned/Unplanned Shutdowns;
• Evaluation of mechanical works and I&C TG and Auxiliary systems;
• Assurance of the modernization program/availability and recertification for Lifting installations and elevators/Elevators;
• Implementation of the program established in the plant for the verification/calibration of the measuring means used in the plant’s systems or laboratories;
• Performing the periodic inspection (PIP) of the plant equipment, of the envelope components, performing the in-service inspection (ISI) for the programs Pressure Vessels (PV), Erosion/Corrosion (EC), Supports and Snubbers (SS) and Live Steam Lines ( MSL);
• Performance of ultrasonic flow measurements, verification of steel alloy elements by X-ray fluorescence method, insulation with ice plugs.

• Repair Now and Tura Department (SRAT)
  • PMLC protection, control of the back-log of work orders of the Central and assurance of support for the operating shift in the execution of daily activities as well as support for the execution of periodic tests, the staff makes up the transient response team of each unit and completes the staff required for the emergency response teams related to each unit per discipline.

The Chemical Section defines, develops and implements the program of chemical control and monitoring of non-radioactive liquid and gaseous effluent discharges into the environment, ensuring for this resources, qualified personnel, specific procedures, chemical specifications, illustrative efficiency indicators for the section’s activity and a periodic follow-up system of their evolution.

The purpose of the activity of the Chemical Section

• Reducing the degradation of materials through contact with fluids and meeting or exceeding the operating life for which the installations were designed;
• Reduction of doses due to activated corrosion products by reducing their production rate;
• Reduction of emissions of chemical substances in the environment;
• Carrying out all chemical control activities in the plant, including emissions into the environment. These can be monitoring or corrective (direct – actual chemical control or indirect – prevention);

Organization of the Chemical Section

The Chemical Section is organized into two groups: the Chemical Technical Office – technical support for the Central’s systems and the Chemical Laboratory U1 and U2 – chemical analyzes and monitoring.

Chemical Technical Office

The Chemical Technical Office provides technical support for the implementation of the Chemical Control and Environmental Protection Program.

The main fields of activity are:

• Elaboration of a chemical control program to reduce corrosion and extend the life of the equipment;
• Identification and specification of materials and technological reagents used in the operation of the plant;
• Development and follow-up of the physical-chemical monitoring program of non-radioactive liquid and gaseous effluents;
• Preparation of reports on liquid effluent monitoring;
• Monitoring compliance and fulfillment of the requirements of the Water Management Authorization in force;
• Developing and maintaining up-to-date documentation for the administration of chemical substances;
• Elaboration of the necessary documentation for the operation, supervision and maintenance of chemical addition systems and secondary circuit sampling systems;
• Supervision of process systems from responsibility;
• Tracking / reporting the performance indicators of the Chemical Department;
• Initiating and running the process of performing chemical analyzes for third parties;
• Drafting and keeping up-to-date the sections of the occupational safety and emergency manuals regarding chemical hazards and actions in case of chemical emergencies;
• Participation in the activity of planning / evaluation of the works in normal operation and during the shutdown of the plant in order to ensure the preservation of the systems and to reduce their corrosion;
• Participation in the analysis of the causes that lead to the occurrence of unforeseen incidents with implications for the security of the plant or other unplanned events;
• Providing support to other working groups in carrying out tests, inspections and special analyses;
• Staff training.

Chemical Laboratory

The Chemical Laboratory ensures the monitoring of the chemical regime in the plant’s systems, the discharges into the environment and the performance of preventive and corrective chemical control activities (chemical additions, purging, purification regimes, etc.).

The main fields of activity are:

• Developing specific documentation and keeping it up-to-date for taking samples, adding chemicals, performing analyses, calibrating and maintaining laboratory equipment;
• Administration of internal work procedures;
• Recording the data regarding the chemical control of the systems and keeping them chronologically;
• Routine monitoring of chemical control parameters and diagnosis and initiation of corrective actions to maintain them in specifications;
• Liquid effluent monitoring;
• Identifying and procuring the necessary equipment and materials for carrying out the activity in the laboratory;
• Monitoring the response of laboratory instruments, maintenance, calibration according to the calibration maintenance program;
• Specific training.

The Auxiliary Operation and Maintenance Section (SEIA) has the mission of taking over the responsibilities of operation, maintenance, ensuring chemical control and technical support for most of the auxiliary systems of U1 and U2, but also of the administrative pavilions inside the protected area. SEIA ensures:

• operation of the auxiliary systems of the nuclear units, including the Water Treatment Station, the Thermal Power Plant, the 100 KV Station, the Fire Water Pump Station, as well as other related systems;
• exploitation of the objectives and buildings belonging to CNE Cernavoda located inside the protected area with all common non-critical systems that serve them;
• field verification of the operational and project documentation issued for the systems in the area of ​​responsibility;
• all the specific activities of preparing maneuver sheets and isolating the equipment to support the maintenance activities;
• chemical control Water Treatment Station/Thermal Power Plant Start.

Organization and main activities

SEIA is composed of the following functional groups:

• Workshop Auxiliary exploitation
  • exploitation Unit 0;
  • operation of the 100kV station and related systems;
  • field verification of the operational documentation;
  • operation sheets and isolators for maintenance.
• Auxiliary Technical Office
  • monitors the status of non-critical systems and equipment;
  • processing technical tasks that appear on the systems under SEIA’s responsibility;
  • the interface with the other technical departments in the central office;
  • defines the maintenance strategy of systems and equipment.
• Interior Auxiliary Maintenance Workshop
  • operational evaluation and work authorizations Unit 0;
  • maintenance and repair works at the objectives inside the protected area;
  • maintenance evaluation of the works;
  • interface with other departments for work planning.
    • Water Treatment Plant Laboratory
  • ensures the chemical control and monitoring of the state of the systems belonging to the Water Treatment Station and the Thermal Power Plant;
  • ensures the processing of tasks of a technical nature that appear on the systems under his responsibility;
  • ensures the preparation and issuance of the operating documentation for the systems under responsibility;
  • defines the strategy of maintenance of systems and equipment from responsibility;
  • the interface with the other technical departments in the plant.

The role of the MID-SMC Section (Loading Unloading Machine – Fuel Handling System) is to support the mission of CNE Cernavoda – respectively the production of “clean” electrical and thermal energy for the environment, under conditions of nuclear safety and economic efficiency – through operation and maintenance fuel handling systems, with as little risk as possible for personnel.

The mission of the MID-SMC Section is to comply as strictly as possible with the refueling program under the conditions of strict adherence to the operating standards and principles of the Cernavoda NPP, based on the performance and individual behavior imposed by Nuclear Excellence.

Fuel handling process

The role of the Fuel Handling system is to ensure, in operation, bidirectional refueling at well-established intervals, so as to maintain the continuous operation of the reactor at nominal power. The fuel handling system can be divided into four parts:

• Fresh fuel transfer

• Fuel change

• Burnt fuel transfer  

• Transfer of burnt fuel to the Intermediate Burned Fuel Storage Facility (DICA)

Organization of the MID-SMC Section

The MID-SMC section has the following functional groups:

• MID-SMC Specialist Group
• MID-SMC Technical Office
• MID-SMC Support Office

MID-SMC Specialist Group

The main attributions of this group are:

• The operation and supervision of the MID-SMC Systems in normal, abnormal or fault conditions, including the implementation of any changes or improvements brought to the existing systems;
• Follow-up and optimization of maintenance programs on MID-SMC Systems.
• Execution of mechanical, electrical and AMC verification, maintenance and repair activities specific to MID-SMC systems.
• Identifying, reporting and solving together with the MID-SMC Technical Office and the MID-SMC Support Office of the problems arising in operation.
• Providing the input data and the necessary support for the preparation and revision of the operation and maintenance documentation: technological schemes, operating manuals, maintenance procedures, etc.
• It provides the input data for organizational improvements in operation and maintenance, the improvement of equipment and procedures, both from the point of view of exploitation and from the technical point of view.
• Personal training activities.

MID-SMC Technical Office

The MID-SMC Technical Office has the following attributions:

• Monitoring the state of health of MID-SMC systems through the Systems Supervision Program.
• Analysis of the operating parameters of the equipment/components of the MID-SMC Systems.
• Elaboration, analysis and periodic revision of the maintenance program for the equipment/components of the MID-SMC Systems.
• Improving the performance and safety of the equipment based on the recommendations from the design manuals, the manufacturers’ manuals and/or the recommendations resulting from the consultation of external OPEX databases (COG, EPRI, IAEA, etc.).
• Initiating corrective measures to maintain or improve the performance of MID-SMC systems.
• Ensuring technical support for the operation of the MID-SMC Systems under the conditions detailed in the plant’s procedures.
• Preparation and periodic revision of the exploitation documentation.
• Development and revision of maintenance procedures.
• Elaboration of manuals, procedures and training materials for the training of personnel within the MID-SMC Section
• Proposal of works and development of work plans during Planned Shutdowns in collaboration with the Works Control Department.
• Ensuring the applicable and appropriate documentation for the preparation of the work package.
• Tracking the degree of insurance with spare parts and materials, tools and/or other equipment.
• Initiating Procurement Requests and supporting documentation, following up on the procurement process for the spare parts/consumables required to carry out the maintenance works in good conditions.
• Studying the technical problems that occurred during exploitation, recommending and applying the approved solutions.
• Ensuring the necessary technical support during the implementation of the work package, according to the requirements detailed in the plant’s procedures.
• Checking the completeness of the work package after the execution of the work, analyzing the way of execution and the results of the post-maintenance tests and, depending on them, initiating the necessary actions.
• Configuration control of MID-SMC systems.
• Investigating events/incidents to establish the root causes and contributing factors, establishing compensatory measures to prevent recurrence.
• Putting into operation new systems or some changes.
• Ensuring the primary information regarding the human and material resources necessary to build the budget projection for the MID-SMC Section.
• Monitoring the degree of budget execution.

MID-SMC Support Office

The MID-SMC Support Office has the following attributions:

• Technical guidance of the operation and maintenance staff.
• Development and revision of maintenance procedures.
• Proposal of works and development of work plans during Planned Shutdowns in collaboration with the Works Control Department.
• Ensuring the primary information regarding the human and material resources necessary to build the budget projection for the MID-SMC Section.
• Reviewing the inventory of spare parts and consumables together with the MID-SMC Technical Office.
• Analysis of the operating parameters of the equipment/components of the MID-SMC Systems.
• Ensuring the necessary support for the MID-SMC Technical Office within major or highly complex projects.
• Ensuring technical support for the operation of the MID-SMC Systems under the conditions detailed in the plant’s procedures.
• Ensuring the necessary technical support during the implementation of the work package, according to the requirements detailed in the plant’s procedures.
• Ensuring the applicable and appropriate documentation for the preparation of the work package.
• Checking the completeness of the work package after the execution of the work, analyzing the way of execution and the results of the post-maintenance tests and, depending on them, initiating the necessary actions.
• Preparation and verification of specific technical operating documents based on recommendations from the manufacturer and/or OPEX.
• Improving the performance and safety of the equipment based on the recommendations from the design manuals, the manufacturers’ manuals and/or the recommendations resulting from the consultation of external OPEX databases (COG, EPRI, IAEA, etc.).
• Investigating events/incidents to establish the root causes and contributing factors, establishing compensatory measures to prevent recurrence.
• Elaboration of manuals, procedures and training materials for the training of personnel within the MID-SMC Section
• Studying the technical problems that occurred during operation or maintenance and recommending solutions for prevention.
• Preparation and follow-up of the personnel training program.
• Conducting periodic labor protection training.