Only problem with steam is that it is like electricity. In small doses it can hurt you and in large doses it can kill you. If a high pressure line lets go you will hear a roaring sound but will not see anything until the steam expands and cools enough to condense and show up as white vapor. Probably some distance away. A stream of high pressure steam can quite literally cut you in half if you walk into it and you will not see it.

Bottom line - where steam is involved in anything larger than a tea kettle, hire a professional. IMHO.