Architects, engineers or workers who perform related control Design, production, use, inspection or testing. Or boiler repair or modification. Boiler used to heat the liquid medium. Or pressure vessel.
Workers, engineers or architects who perform duties associated with the control. Design, manufacture, inspection, testing or repair, or alter the boiler boiler using thermal conductive liquid or pressure vessel.
people who work an engineer or an architect who perform duties that are related to the control of design, production, use, inspection, or test or the repair or modification of boiler the boiler using liquid media to bring the heat or pressure vessels