what happens if they have no steam engines attached?
Will they explode than
You dont even need liquaducts, the aquas accumulator can supply water to boiler directly if they are thouching the fuelboxeshave 2 aqueus accumulators (with water sources) under it connected with liquiducts, it won't explode EVER (1 might be enough, just to be sure, add 2 like I do.
and in mythbusters (a tv program where they take myths and put them to the test) they blew up a small boiler, and... well, that explosion is in the top ten explosions of mythbusters history, so you get the idea how powerful it is, if you take into account that the other explosions involve C4.
have 2 aqueus accumulators (with water sources) under it connected with liquiducts, it won't explode EVER (1 might be enough, just to be sure, add 2 like I do.
ground layer
xxxxxxx
xxwawxx
xxxxxxx
layer 1
fffxfff
fffLfff
fffxfff
layer 2-4
HHHxHHH
HHHxHHH
HHHxHHH
x: anything
w: water source
a: accumulator
f: firebox
L: liquiduct
H: high pressure tank