ahh ok, thanks will see what happens as their output is not always needed right nowHobbyist's potentially can since it's boiler+engine in one and is unhappy in the same circumstances (adding water to a hot+dry boiler). The others haven't in my experience, but I haven't tried anything like, for example, running a steam engine without an output, which may be liable to.
Never had this happen, and I have multiple high pressure steam boilers maxed out (18 engines each) going into a conduit system that in no way can possibly using the amount of power getting shot into it (they equilibrize internal storage at around 10k MJ for Industrials). Can somebody confirm this? I'm attaching a screenshot to show around where my engines hover in this situation (they range in 9.8k->10k and drop back to the 9.8k point with the engine pump action; these engines have been running continuously like this for over a week now, as well).(ie. Thermal expansion conduits, which will only accept as much power as is requested).