One of if not the most advanced Sodium-cooled Fast Reactor simulation available on Roblox. Featuring real time accurate thermodynamics, high fidelity nuclear physics, and dynamic grid loads in one sandbox game.
Unlike standard Roblox nuclear simulations, Kallskär models real world liquid sodium cooling. Players must manage core temperatures up to 550°C at near-atmospheric pressure.
This thermal energy is converted into power via 2 x 500 MWe turbines. The simulation accurately tracks thermal efficiency, requiring players to balance reactor output with cooling demands to maintain a stable 42% efficiency.
Safety in Kallskär is modelled with physics rather than forced with scripts. The reactor features a massive 1,250-tonne pool of primary sodium. In the event of a total station blackout, the plant does not require external AC power to survive.
Players rely on the Direct Reactor Auxiliary Cooling System (DRACS). Functioning with just natural convection, it safely dissipates decay heat to the atmosphere without the need for active pumps.
Powering the SE2 zone requires more than just connecting to the grid. Players will have to operate in either load-following or base-load with dynamic grid demands.
Our automated control systems simulate real-world Frequency Containment Reserves (FCR). Players must respond to grid frequency drops within seconds, actively stabilizing the regional network during sudden demand spikes.
Continuous proportional response across 49.9–50.1 Hz. Capable of shifting 63% of reserved capacity within 60s.
Rapid power injection as frequency falls below 49.9 Hz. 50% capacity deployment in 5s; 100% within 30s.