Their maintenance engineer labor intensity is generally not high, and even do nothing, your time is mainly in the equipment situation and a variety of materials, equipment plans, but in the necessary will also have a greater intensity of work, but absolutely rare. The danger comes from the unpredictable elements of the installation. But from a predictable point of view, their protective measures are many times stronger than domestic companies.
But your biggest stress and crisis is whether or not you've acquired a good handful of skills and the habit of spending a lot of time every day organizing information and knowledge. If not, it's definitely dangerous.