ENERGIA NUCLEARA SIGURA, SUSTENABILA SI COMPETITIVA IN ROMANIA

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1 ENERGIA NUCLEARA SIGURA, SUSTENABILA SI COMPETITIVA IN ROMANIA Universitatea Politehnica Bucuresti 09 Nov 2017 S.N. Nuclearelectrica S.A.

2 Company structure Nuclearelectrica overview NUCLEARELECTRICA Executive Office Bucharest Cernavoda NPP Units 1&2 Branch office Nuclear Fuel Plant Pitesti Branch office Safe & Efficient operation of Units 1 & 2 Management of all Company assets in Cernavoda, including Units 3&4 Manufacturer of nuclear fuel bundles, for own use, based on UO2 powder supplied by Uranium National Company Romania 84,65% until % starting 2014 Energonuclear Subsidiary (PCO) Units 3& 4 Project 2

3 CANDU Technology user Outstanding operational results Global Ranking (the latest update by Nuclear Engineering International-August 2016) Capacity Factor since in service Unit 2-93,33% - ranking 2 nd at global level; Unit 1-89,77% - ranking 9 th at global level. With a Capacity Factor of 91,6% since in service, Romania continues to rank no. 1 at global level. A nuclear technology operating on four continents There are currently 48 pressurized heavy water reactors (PHWRs) based on the CANDU design that are operational worldwide Top performing reactors from the point of view of nuclear safety and radiological protection Candu Energy, is a wholly-owned subsidiary of SNC-Lavalin Inc. (TSX:SNC), Canada s largest engineering firm; it inherited Atomic Energy of Canada Ltd., the creator of CANDU reactor concept

4 Human performance Equipment efficiency Cernavoda NPP CANDU technology Canadian Deuterium Uranium 706,5 MWh/ Unit Uses natural uranium as fuel and heavy water as moderator and cooling agent Unit 1 Unit 2 Vision Values Principles Directions Commissioning December 1996 September 2007 Programs Capacity factor since in service until June 30 th, % 94.56% Performance indicators Leadership abilities Both units are CANDU units; U2 is a more advanced project than U1 Highly regulated industry (WANO/INPO/COG, etc.) The working system is essentially North-American developed based on INPO processes Team work

5 Fuel cycle For the operation of Cernavoda NPP, SNN uses the fuel bundles manufactured at its FCN Pitesti subsidiary. The spent nuclear fuel is stored in the spent fuel bay for 6 years and then it is transferred to the Interim Dry Storage Facility ( DICA ) for 50 years. DICA is a modular structure, gradually built, and destined to accommodate the spent fuel resulted from the operation of 4 nuclear units (the two operating ones and the future Units 3&4). For the final storage, as per the provisions of the Romanian legislation, SNN pays to AN&DR a fee of 1,4 Euro/MWh SNN also pays a fee of 0,6 Euro/MWh for decommissioning

6 Nuclear Energy Generation Advantages

7 Long-term strategic projects Cernavoda NPP Unit 1 Refurbishment Project Cernavoda NPP Units 3&4 Project Retention of highly specialized personnel and growing a new generation of specialists Maintaining the current nuclear safety level and continuation of the nuclear safety investments project Identifying diversification opportunities in synergy with the core business of SNN

8 Romanian nuclear new build 3 & 4 Cernavoda NPP Units Project and upcoming strategic investment projects

9 The 3&4 Cernavoda NPP Project Status update The Units 3&4 Project was relaunched in mid 2014 based on a new governmental strategy for the continuation of the Project and an investor selection procedure was unfolded by SNN according to the provisions of the governmental strategy. The main steps taken during the selection procedure: - Only one investor - China General Nuclear Power Corporation (CGN) submitted the qualification documentation and subsequently the Documentation of Intent; - October 14 th, CGN was nominated Selected Investor; - October 17 th, 2014 the Joint letter regarding the Intent to Perform the Project was signed by SNN and CGN; - September 2 nd, 2015 the Romanian Government approved the Memorandum of Understanding ( MoU ) regarding the development, construction, operation and decommissioning of Units 3 and 4 from CNE Cernavoda; - October 22 nd, 2015 the SNN GMS approved the MoU; - November 9 th, 2015 the MoU was signed by the parties, SNN and CGN; - January 19 th, 2016 the Romanian Government issued the Support Letter for the Units 3 and 4 Project - December 20 th, 2016-the limit term approved by SNN GMS for the completion of the negotiations to set up the new project company -January 31 st, 2017 the Inter-ministerial Commission approved the proposal for the extension of negotiations over the Investment Documents, under the same conditions of Memorandum of Understanding; the procedures to obtain a mandate regarding the continuation of negotiations from the Inter-ministerial Commission, Romanian Government and General Shareholders Meeting started; -March 6 th, 2017 the Inter-ministerial Commission approved the proposal of the Negotiations Commission to continue negotiations and to provide to Romanian Government a memorandum over this matter. The continuation of negotiations can be realized after the approval in the General Shareholders Meeting; -In the following period, decisions from authorities (Ministry of Energy and Romanian Government) and GSM are expected, regarding the formalization of negotiation continuation process.

10 CNE Cernavoda Response to Fukushima Event In response to Fukushima nuclear accident, the governmental and non-governmental organizations involved in nuclear industry requested immediate actions to be taken. INPO (Institute of Nuclear Power Operations) and WANO (World Association of Nuclear Operators) issued two similar documents on 14 and 17 march, 2011, respectively, by means of which all the affiliated plants were required to: Verify the response capability to severe accidents as a consequence of external events considered beyond design basis (e.g.: Earthquake); Verify the response capability to station blackout (SBO); Verify the response capability to internal and/or external flooding; Verify the response mode to fires or flooding caused by earthquake. CNE Cernavoda performed the WANO requested assessments by May 2011 On 25 March, 2011, EUROPEAN COUNCIL decided that Nuclear safety of all EU Nuclear Power Plants has to be revised according to transparent and extended risk assessments, the so-called STRESS TESTS ; ENSREG (EUROPEAN NUCLEAR SAFETY REGULATORS) issued in late May 2011 a set of technical specifications based on which regulatory authorities of each member state to require the license holders to reassess the design basis margins of the nuclear safety (STRESS TEST);

11 CNE Cernavoda Response tu Fukushima Event In this context, CERNAVODA NPP forwarded to CNCAN (ROMANIAN REGULATORY AUTHORITY) a preliminary Stress Test Report on 12 August, 2011,and a final one on 28 October, 2011; Both preliminary and final Stress Test reports have been prepared by a reunite team of Cernavoda NPP experts and plant designers, AECL Canada and ANSALDO Italy. As per the EU stress tests results, it has been demonstrated that CERNAVODA UNITS 1 & 2 meet the safety requirements as stipulated in the original design, while having sufficient margins against earthquakes, flooding, loss of electrical power and loss of ultimate heat sink. To further increase robustness of the units, design modifications and procedural improvements have been implemented, which represented a significant human and financial effort. SNN-CNE Cernavoda demonstrated its commitment in implementation of the best practices and technologies, in order to be prepared for beyond design basis extreme events, with a paramount focus on the safety of public, workers and the nuclear installations.

12 Cernavoda NPP Unit 1 Refurbishment program In case of CANDU technology, the project based life span is of EFPH (Effective Full Power Hours), which means 30 years of operation at a Capacity Factor of 80%. The main structures, systems and components that limit the life span of CANDU NPPs: Fuel channels Feeders Containment (envelope) The outage duration for the refurbishment process includes, in addition to retubing, all other related activities necessary for the long-term operation of Cernavoda NPP Unit 1 Such a complex process can only be achieved through an extended outage of Unit 1 with the removal of the nuclear fuel from the reactor. The refurbishment process consists in 3 important phases: 1. Defining the project: assessment of the structures, systems and components of the power plant, elaboration of documents among which: Periodic review of nuclear safety, Execution plan of the project and Feasibility Study. SNN is currently in full assessment process and the planned completion of this stage is the end of Pre-Outage Project implementation: procurement and contract concluding specific activities, pre-outage works and constructions, document preparation and license clearances. 3. Effective project implementation: Refurbishment outage: Unit 1 will be shut down for the following activities: Fuel removal and drainage of the systems Changes execution, retubing and feeders replacement Commissioning and regular operation Based on benchmarking and our data, the effective shut-down of Unit 1 will occur between , it will last ~2 years and it will cost some 1,2-1,5 billion Euro.

13 Nuclear security at Cernavoda NPP Robust physical protection system, ready to deal with both the formerly related physical protection threats and the new nuclear security threats, aligned with the most recent IAEA standards Increased need of further operator-state cooperation development 3 major areas of focus The technical component Detection Alarm Assessment of the alarm Delay of the adversary Communication of the detection to the response authorities The human component The suitable personnel, constantly trained to effectively manage and intervene in different situations The procedural component Allows the optimal coordination and integration of the technical human component Operation of the physical protection system Access control in the protected area Maintenance of the physical protection system Preparedness of the response teams

14 Nuclear security at Cernavoda NPP assessment The physical protection system is constantly assessed and enhancements are implemented where necessary The components of the physical protection system are tested periodically The efficiency of the physical protection system is assessed by CNCAN and also by international AIEA experts Operation tests Performance tests Post-maintenance tests Preventive, corrective and predictive maintenance program

15 Thank you!