초록 ▼

Improved techniques are provided for improving the environment of hazardous material abatement personnel operating within an enclosed working area while conducting, for example, asbestos removal operations. A negative pressure is established within the working area by a portable air moving unit, whi

Improved techniques are provided for improving the environment of hazardous material abatement personnel operating within an enclosed working area while conducting, for example, asbestos removal operations. A negative pressure is established within the working area by a portable air moving unit, which exhausts air from the working area to prevent hazardous material leakage. The exhausted air is filtered, a significant portion of the exhausted air is conditioned by a portable refrigeration, heating and dehumidification system, and the temperature controlled air is returned to the working area. An air diverter is provided for regulating the ratio of the discharged air to the returned and conditioned air in response to the sensed pressure level within the working are. The temperature of the working area is regulated, thereby substantially increasing worker productivity and reducing safety risks. The humidity level within the working are may either be lowered to reduce the curing time for hazardous material final encapsulation operations, or increased to reduce the airborne contaminant level during wet abatement operations. Leakage from the working area is preferably minimized, while the efficiency of the portable conditioning unit is maximized.

대표청구항 ▼

A method of providing an improved temporary working environment during removal of hazardous particulate material or during the encapsulation of the hazardous particulate material, the method comprising: defining a working space substantially sealed from space exterior of the working space; powering

A method of providing an improved temporary working environment during removal of hazardous particulate material or during the encapsulation of the hazardous particulate material, the method comprising: defining a working space substantially sealed from space exterior of the working space; powering a portable air moving unit for exhausting air including hazardous particulate material from the defined working space to maintain a negative pressure within the working space with respect to the space external of the working space; monitoring the level of negative pressure within the working space: filtering the exhausted air to remove the hazardous particulate material; discharging a minority portion of the exhausted air to the space exterior of the working space; powering a portable conditioning unit to condition a majority portion of the exhausted air, the majority portion of the exhausted air being defined by the exhausted air less the discharged air; returning the conditioned air to the working space; and regulating the ratio of the minority portion of the discharged air to the majority portion of the conditioned air in response to the monitored level of negative pressure.