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Jäätyvä 2017 – Preparing for a serious disturbance situation

What if the electricity was cut off for a couple of weeks because of exceptional weather conditions? What would happen to the flow of information if normal communication devices didn’t work? Where would citizens get heat and water and how would we secure fuel distribution? These threats were the starting points for the large Jäätyvä (dealing with a widespread power outage caused by freezing weather) exercise held in Kuopio in October.

The Jäätyvä 2017 exercise simulated a situation in which weather conditions cause an exceptionally long-lasting disturbance in electricity distribution in the main grid and distribution grids. The disturbance paralyses the basic functions of society in the Savon Voima Verkko and Kuopion Sähköverkko distribution areas in the Northern Savonia region. Approximately 400 people took part in the exercise.

The exercise was carried out with a system that resembled a gaming platform. The organisations participated in the game from their own locations, as would be the case in a real situation. Development of the events began the previous week, when the participants received weather bulletins and other situational reports.

A blackout in the whole region

The exercise culminated with an intensive period on 4–5 October, which involved going through two weeks of events in a two-day period. According to the scenario, the electricity was cut off in a large area of Northern Savonia during this period. According to Control Room Manager Arto Pahkin from Fingrid, it’s very important to get an overall picture right at the start.
“The time when information flow stops and the electricity goes off is a critical phase. That’s when we have to cooperate with different organisations to prioritise the importance of repair work. This is challenging when normal communication tools are not functioning.”

The Virve authority radio network and Krivat service platform for critical infrastructure organisations were tested in the exercise.
“It’s good to find out what happens when electricity grids, mobile phone networks and e-mail are not functioning. As far as I know, the Virve and Krivat systems have never been used so extensively in the Kuopio area,” stated Kuopion Sähköverkko Oy’s Managing Director Kari Väänänen.

Operations Manager Simo Hyvärinen confirmed that message traffic worked surprisingly well.
“We noticed that carefully considered and appropriate communication is important. Unnecessary traffic has to be avoided in order to keep the network operating. This require good and clear rules.”

Kuopio and Siilinjärvi wanted to find out if their preparedness is sufficient

The Jäätyvä 2017 exercise was also a test run related to preparedness planning for the cities of Kuopio and Siilinjärvi. The city of Kuopio had a major role in the exercise: approximately 120 employees from the city and its public utilities took part in the project. Deputy Mayor Jarmo Pirhonen said that he is particularly concerned about the level of preparedness on the part of citizens.
“The exercise demonstrated that society is incredibly dependent on electricity. It makes you think about whether residents really know how to prepare for a longer outage. Proper preparation means having enough wood, food, water and batteries for a radio.”

Technical Manager Ari Kainulainen from the municipality of Siilinjärvi also wonders how residents will manage.
“We made evacuation plans during the exercise, but they only apply to citizens who are in poor condition. What will happen to the large numbers of people who live in their own homes? Today’s apartment buildings don’t have back-up heating systems.”

Head of Safety and Security Lauri Holappa from the city of Kuopio said that the exercise provided some good tips for communicating with citizens. “The exercise also showed us that the roles and tasks of the responsible persons have to be clarified. We will also continue the exercises for the other personnel.”

Lights on – electricity is restored

A fallen electricity pole was raised with help from a Finnish Defence Forces helicopter.

On Thursday, the worst part of the exercise scenario was coming to an end. Repairs were in progress. The Finnish Defence Forces had provided a helicopter. The command centre jubilantly watched a video of the helicopter raising a fallen tower. In fact, the video had been recorded earlier during a practice situation.

Although no people or equipment were physically moved around, the exercise involved responding to requests and used realistic estimates of the times required to complete each action. Captain Mikko Suihkonen from the Finnish Defence Forces was on site in the command centre.
“It was very useful to be able to practice with the operators that would be involved in a real situation. Our job mainly involves providing assistance to other authorities: traffic control tasks, different types of transportation and fuel distribution.”

The exercise provided valuable information

Project Manager Harri Forsberg from the South Savo Rescue Department was responsible for technical operations in the exercise. He was one of the few people who knew in advance how events would progress. The command centre for the exercise sent pre-planned feeds to the players, to which they had to react according to their organisation’s plans. Just like in a real situation, all the parties did not receive all of the messages.
“Although this was an exercise, the situation did correspond to reality to a certain extent. For example, early in the week we provided information about the snow situation. As would be the case in real life, the organisations tried to develop a situational picture using the limited methods that were available.”

“All message traffic during the exercise was saved in the system. This material will be analysed and will certainly provide a lot of information about development needs,” states Harri Forsberg when discussing future plans.

A rough picture of future focuses was already forming as soon as the exercise ended. New questions also came up. Arto Pahkin considered the role of state administration.
“It’s a bit unclear how we can get state administration assistance in a situation that is not yet extreme.” A widespread, two-week regional disturbance is not classified as an emergency. It would be good to have clear rules for this.
“A second important task is to plan how human resources can be used in an exceptional situation. The same people can’t be on call very long when the assignment requires a continuous presence.”

All parties involved agree that cooperation preparedness between organisations has to be improved. However, the situation is not hopeless and many good things were also discovered.
“The exercise showed that different organisations can perform as they should. We obtained good information about how to build functional cooperation,” sums up Pahkin.

Petri Nieminen from the National Emergency Supply Agency chaired the steering group for the exercise, and he was very pleased with the system that served as a platform for the exercise.
“The system operated in an outstanding manner even though there was a lot of traffic. A couple of thousand messages were sent between different parties during the situation. •

The exercise tested six areas:

• Adequacy of resources and equipment for repairing faults

• Use of executive assistance

• Municipal management group activities

• Securing fuel distribution

• Implementation of the electricity restoration sequence

• Communications

The National Emergency Supply Agency’s Power and District Heating Pool was responsible for implementing the exercise, which tested the preparedness and cooperation capacity of different organisations. The parties involved were the transmission system operator Fingrid Oyj, National Emergency Supply Agency, Finnish Defence Forces, Municipality of Siilinjärvi, City of Kuopio, Savon Voima Verkko Oy electricity distribution company, Kuopion Sähköverkko Oy electricity distribution company, Kuopion Vesi water works, North Savo Emergency Department, South Savo Emergency Department, and many other authorities and companies.


Excerpts from bulletins that the participants in the exercise received.

27.9 at 14.00
Finnish Meteorological Institute:
The weather type in Finland is changing. 5-Day forecast 28.9–2.10.: The western air flow will weaken and a strong low pressure front will approach from the east at the end of the period. The weather will cool significantly at the same time. Heavy cloud and precipitation will occur nearly every day, with heavier precipitation at the end of the period.

1.10.2017 at 12.00
LUOVA bulletin:
The first bulletin concerning the situation. Danger period: 4.10.2017 at 00:00–5.10.2017 at 00:00. Danger area: The eastern part of the country. Reason for bulletin: Heavy snow load, freezing rain and gusting winds. Danger of the phenomenon: The weather situation is dangerous.

Savon Voima Verkko Oy
Electricity outages likely in eastern Finland – Savon Voima warns its customers of a major regional disturbance. According to the Finnish Meteorological Institute’s weather forecast, strong winds and heavy precipitation are expected in eastern Finland over the next few days. If the forecasts become reality, the wind is expected to increase to as much as 25 meters/second starting tomorrow, causing a real possibility of a major disturbance in the Savon Voima grid area.

1.10.2017 at 14.00
Main grid disturbance clearance preparedness will be increased because of the deteriorating weather. Due to the forecasted deteriorating weather conditions, Fingrid is raising its preparedness level in the eastern Finland region from 16.00 on Monday 2 October until 16.00 on Thursday 5 October.

3.10.2017 at 24.00
Widespread electricity outages in eastern Finland in both the main and local grid. Electricity outages in extensive parts of eastern Finland. Fallen trees and the ice load have badly damaged low and medium voltage networks and the main grid.

3.10 at 24.00
Finnish Transport Agency:
Road weather in the north Karelia road management area. The storm has knocked down trees throughout the area of impact and extremely heavy snow/freezing rain has stopped traffic in the storm area. Road ploughing began in the easternmost parts of the area on Monday evening at 22.00. The condition of roads east of Highway 6 cannot be maintained in this situation. The condition of roads west of Highway 6 is deteriorating rapidly. Driving in city and town centres is possible to a limited extent.

3.10.2017 at 16.00
LUOVA bulletin:
The third bulletin concerning the situation. Reason for bulletin: Freezing rain, heavy snow load and gusting winds. Danger of the phenomenon: The weather situation is extremely dangerous. The probability of exceptional freezing rain continues to increase, the danger level has been raised to the highest level.

4.10 at 10:00
Electricity distribution in eastern Finland:
Permanent fault in Juankoski–Kontiolahti transmission line. Based on the disturbance recording, the fault site is p. 6.

5.10 at 8.45
Finnish Meteorological Institute:
The weather is becoming milder. The cold northern air flow affecting Finland for the entire week has weakened and a warm and dry air mass will enter the country from the southeast after the weekend. •