Chemistry SE doesn't have many engineering questions as far as I can see but Physics SE has a lot of nuclear engineering and electrical engineering, however they arbitrarily reject some of such questions as engineering. Chemical SE should have a clear policy on which questions are OK and which are not.
Engineering fields is a considerable gap from the raw sciences- some parts without anything more an applied basis e.g. nuclear reactor control systems actual involve starting with the physics and then adding assumption after assumption (many) until its solveable while trying to avoid becoming totally non-physical.