Vision and deliverables

No unforeseen impact by external grid disturbances

The vision of the GINO program is that the external grid should not cause any unforeseen impact on systems or functions causing interruption in any nuclear power plant state.

Benefits and deliverables

Receivers of expected benefits/deliverables

The main receivers are the NPP operators, to revise safety, achieve excellent plant availability, minimise unplanned shutdowns and maintenance needs, and maintain all safety margins. The results are also of great importance to the plant owners, such as optimising operating costs and investment strategies.

The radiation safety authorities (SSM, STUK) have an interest in the benefits of this program to better validate safety margins.

The transmission system operator (TSOs Svenska Kraftnät and FinGrid) benefits from several of the outcomes, such as improved plant reliability and stable production.

The public will benefit from lower risk of power outages following severe occurrences in the electric grid.

Expected benefits

The benefits from the program include better knowledge of risks in external grid interference from several different possible events, improved modelling of specific occurrences leading to possible pro-active measures, lower costs for component replacement, and avoidance of extended outage due to better understanding of most vulnerable components. Increased preparedness and robustness against unknown or unidentified events and patterns are also expected benefits.

Expected deliverables

List of expected outcomes and milestones of the program for 2016-2018:

Action

Deliverable

Expected end date

A.1

Lessons learned and implementation of mitigating measures

Q2, 2016

A.2

Report on grounding verification methodologies including lessons learnt from Barsebäck

Q1, 2018

A.3

Report on lightning modelling with recommendations on limiting vulnerability to over-voltage

Q4, 2018

B.1

Conclusions and recommendations on new electrical devices

Q2, 2017

C.1

Describe phenomenon and what technical information is needed to do SSR calculations

Q4, 2017

WS

Workshop to discuss results, synergies and future strategies

Annually

In addition, progress reports for all activities are to be prepared regularly.