Watch the clip where Göran shows, among other things, how to get oxygen down to the shelter.
At Restad gård in Vänersborg, there are nine shelters with room for 823 people.
The area also has one of Sweden's largest asylum accommodation with 1260 accommodation places.
A boom must be loosened and the concrete block lifted if the emergency exit in the shelter must be used.
- Right now, almost the entire workforce is busy completing more housing for war refugees from Ukraine, says Göran Westlund, construction manager at Restad farm to SVT Nyheter Väst.
But it is not only what fills his working days, he is also tidying up the rest of the shelters so that they can be used if the need arises.
- It is deplorable that measures must be taken for a possible threat of war.
It is nothing that has ever been appreciated, he says.
This particular shelter has room for about 150 people.
Photo: SVT / Helena Josefsson
"Eternal world peace"
Göran Westlund has been involved in the Home Guard and the voluntary defense for many years and also read a lot of war history and he thinks that Sweden has gone too far in disarming the defense.
- After the Soviet Union collapsed, the politicians seem to have prepared for eternal world peace, but you should have learned because that was also how you did before the Second World War broke out.
They seem to think the lunatics are dying out, but they are not.
He opens a strong steel door, then we go through a so-called shock wave lock to get to the next steel door before we reach the shelter itself.
- A shelter must withstand a close hit by a 250 kilo bomb, so it can withstand a lot of force.
Oxygen is cranked down to the shelter by hand and the air is purified through a sand filter.
Photo: SVT / Helena Josefsson