Use the b key to buy uranium (1000mb=$50) Use the s key to sell power (1000RF=$50) Use Reaction Speed to choose how fast the reactor reacts, 51+% will start a chain reaction (creating more rads than the dispersion rate), which is the fastest way to use the reactor. Watch out on the rads and make sure not to blow the reactor up. Use the control rods to get rid of excess rads faster (up to 101X the base rate). Use the other controls to generate power. Excess heat that can't be stored is transferred to the casing, which wastes heat and destroys the reactor eventually. (Melt point=900°C)
i found the original nuclear reactor simulator a bit to tight, so i loosened up the space a bit