Stockholm Research Reactor


 * R1 Reactor in Nucleus IAEA-Database (IAEA Code SE0004)

"R1 was the first nuclear reactor of Sweden. It was a research reactor located at the Royal Institute of Technology (KTH) campus at Valhallavägen in central Stockholm, in the rock beneath the current-day Q-Houses. The reactor was active from July 13, 1954 to June 6, 1970. The reactor was dismantled, and there is nothing left of it today; the reactor hall however still exists. The effect of the reactor was originally 300 kW but was later increased to 1 MW."


 * first criticality: 13/07/1954 18.59 o'clock
 * reactor type: pool
 * moderator & coolant: heavy water
 * neutron reflector: graphite
 * therm power: 600.000 kW
 * control rods: 2
 * fuel: natural uranium
 * closed: 1970