Meters are stupidly based on the size of the Earth (literally, given some of the ways the meter was originally defined). Give us the reactor dimensions in attoparsecs!
"Since 1983, it is defined as the length of the path travelled by light in vacuum in 1⁄299,792,458 of a second"
No matter how you slice it, feet are just dumb.
Any good physicist will be able to give you the dimensions in decillions of Plank lengths.