A system structured for use in conjunction with an interior region of a nuclear environment, the interior region being at least partially enclosed, the system comprising: a reservoir having stored therein breathable gas whose stored condition is at least one of at a temperature less than the ambient temperature at the exterior of the reservoir and at a pressure greater than the ambient pressure at the exterior of the reservoir, the reservoir being structured to output a stream of the breathable gas responsive to a command; a control apparatus connected with the reservoir and structured to provide the command to the reservoir in a predetermined situation; a deployment system that is structured to receive the stream, the deployment system comprising: a heat exchanger comprising a number of flow channels that are in fluid communication with the reservoir and that are situated in heat exchange relation with the interior region, the number of flow channels being structured to receive therethrough at least a portion of the stream and to transfer to it heat from within the interior region, characterized in that it further comprises a generation apparatus comprising a turbine and an electrical generator that are mechanically connected together, the turbine being in fluid communication with the reservoir and being structured to receive therethrough at least a portion of the stream and being operable therefrom to cause the electrical generator to generate electrical power, and a valve that, responsive to a number of instructions received from the control apparatus, is structured to operate to divide the stream between the number of flow channels and the generation apparatus. a reservoir having stored therein breathable gas whose stored condition is at least one of at a temperature less than the ambient temperature at the exterior of the reservoir and at a pressure greater than the ambient pressure at the exterior of the reservoir, the reservoir being structured to output a stream of the breathable gas responsive to a command; a control apparatus connected with the reservoir and structured to provide the command to the reservoir in a predetermined situation; a deployment system that is structured to receive the stream, the deployment system comprising: a heat exchanger comprising a number of flow channels that are in fluid communication with the reservoir and that are situated in heat exchange relation with the interior region, the number of flow channels being structured to receive therethrough at least a portion of the stream and to transfer to it heat from within the interior region, characterized in that it further comprises a generation apparatus comprising a turbine and an electrical generator that are mechanically connected together, the turbine being in fluid communication with the reservoir and being structured to receive therethrough at least a portion of the stream and being operable therefrom to cause the electrical generator to generate electrical power, and a valve that, responsive to a number of instructions received from the control apparatus, is structured to operate to divide the stream between the number of flow channels and the generation apparatus. a heat exchanger comprising a number of flow channels that are in fluid communication with the reservoir and that are situated in heat exchange relation with the interior region, the number of flow channels being structured to receive therethrough at least a portion of the stream and to transfer to it heat from within the interior region, characterized in that it further comprises a generation apparatus comprising a turbine and an electrical generator that are mechanically connected together, the turbine being in fluid communication with the reservoir and being structured to receive therethrough at least a portion of the stream and being operable therefrom to cause the electrical generator to generate electrical power, and a valve that, responsive to a number of instructions received from the control apparatus, is structured to operate to divide the stream between the number of flow channels and the generation apparatus.