If that steam tank wasn't working everything that uses steam would stop.
If the creosote tank wasn't working the 10 36LP boilers would stop.
If the 10 36LP boilers stopped working then all my machines would stop.
If the 200+ coke ovens weren't forming then the creosote tank would empty.
I mean if I can't see it and the multiblocks keep working what actually is the problem?
I'm playing a singleplayer world, so it could be something that only manifests in multiplayer, although I've used the same combination in multi in other packs without issue presumably with different versions of the two mods though.