A large vessel had experienced an internal leak of a coolant. It was Friday and the work crew needed to get the vessel dried out to allow maintenance to be performed on Monday. Using C-clamps, they attached thick steel plates to the two vessel openings (one on each end) and attached a shop airline to one top of the plates. On the other, they drilled a ¼ inch diameter hole to allow the air to escape. They cracked the valve and left for the weekend. Answer the following questions:
a. What are the possible outcomes of this scenario?
b. What safety device(s) should have been used and "