11 Hydrogen gas generator with controls installed in a prefabricated, portable enclosure or building that may include numerous accessories, namely, gas detector, trace oxygen analyzer, hygrometer, compressor, feed water storage unit, feed water purification unit, cylinder filling manifold, high-pressure gas controls, nitrogen purge unit, power distribution unit, lighting unit, ventilation unit, heating and air conditioning unit, fire suppression system, fire alarm, and cooling water unit