Patent ID: 7518484
Filing Date: 2009-04-14
Classification: B23K,F24F

Abstract:
1. An enclosure system comprised of one or more enclosures built about at least one object to be hot worked at a facility wherein flammable or combustible materials are located within a hazardous distance from where the hot work is to be performed, which enclosure system is comprised of: a) at least one enclosure, each enclosure comprising: i) enclosing walls, ceiling and floor defining a chamber in which the hot work is to be performed; ii) at least one door to allow workers to enter and exit; iii) at least one air inlet port; iv) at least one air outlet port; v) at least one blower having an intake and exhaust, which exhaust is in fluid communication with said at least one air inlet port; vi) a blower control in communication with said at least one blower and to a gas detection monitor at the intake of at least one of said one or more blowers and to a shutdown controller, wherein said blower control has the capability of allowing the blower to continue to operate during an emergency shutdown that is not triggered by a combustible or flammable gas detected at a gas detection monitor located at the intake of said one or more blower; vii) at least one manual emergency shutdown switch inside of said enclosure; and viii) at least one manual emergency shutdown switch outside of, but within the immediate perimeter of, said enclosure;