Patent ID: 8357304

Claim:
A system for storing a hazardous material comprising: a first sealed storage tank containing the hazardous material, a containment envelope enclosing the first storage tank and forming a containment space between the storage tank and the containment envelope, a first sensor configured to detect a concentration of hazardous material in the containment space, a first supply of mitigating fluid capable of sequestering or chemically neutralizing the first hazardous material, a pump configured to deliver the first mitigating fluid to the containment space, and a controller in communication with the first sensor and the pump wherein: the containment envelope comprises a spray nozzle and a flush nozzle in fluid communication with the first supply of mitigating fluid and a drain configured to allow the mitigating fluid to exit the containment space and enter into a waste container or a recirculation system; said spray nozzle is configured to deliver mitigating fluid to the containment space as a spray; said flush nozzle is configured to provide mitigating fluid at a higher flow rate than said spray nozzle; and the controller is configured such that the pump is operated to deliver mitigating fluid from the first supply of first mitigating fluid through the spray nozzle and into the containment space when the sensor detects a first predetermined concentration of the first hazardous material in the containment space and the pump is operated to deliver mitigating fluid from the first supply of first mitigating fluid through the flush nozzle and into the containment space when the first sensor detects a second predetermined concentration of the first hazardous material in the containment space.