SN Nuclearelectrica SA („SNN”) announces the completion of the works related to the planned outage of Cernavoda NPP Unit 1. The reconnection with the National Power Grid of Cernavoda NPP Unit 1 will take place during the evening of June 25th 2016.
Unit 1 entered the planned outage on May 6th 2016 in order to perform planned maintenance works, which are carried out once every two years for each unit.
During the planned outage, complex different activities were performed as follows:
- Preventive and corrective maintenance;
- Mandatory inspections;
- Mandatory tests, as per the requirements of the National Commission for the Control of Nuclear Activities („CNCAN”), which can be performed only with the reactor off power;
- Implementation of design changes on certain systems/equipment/components.
The planned outages are considered as projects of the company, initiated with 24 months in advance of the scheduled date, having a dedicated project management team, schedule board, adequate planning of human and financial resources.
The 2016 planned outage of Cernavoda NPP Unit 1 lasted 51 days, compared to the regular outage period of approximately 30 days. During the extended planned outage period of Unit 1 additional maintenance works on the steam generator were performed. This represents a standard procedure, implemented by CANDU 6 type reactors world wide, once in the entire initial operating life of 30 years of each nuclear unit, as per the analysis of technical data.
The analysis related to the extension of the planned outage demonstrated the economic and technical advantages represented by the improvement of the efficiency of the thermal circuit which leads to the increase of the production with approximately 1,5-2% compared to the forecasted level in the absence of the above mentioned works.
The works related to the planned outage were carried out under safe conditions for the personnel of the power plant, the public and the environment, in compliance with the approved procedures applied by Cernavoda NPP.