초록 ▼

A decontamination chamber entranceway to an asbestos removal work area includes rigid swinging doors for a rapid escape from the contaminated work area due to an emergency such as a fire or smoke. Also during a power failure it is easy for the workers to leave the work area through the rigid swingin

A decontamination chamber entranceway to an asbestos removal work area includes rigid swinging doors for a rapid escape from the contaminated work area due to an emergency such as a fire or smoke. Also during a power failure it is easy for the workers to leave the work area through the rigid swinging doors of the invention. Each of the doors may include an air inlet opening having at least one plastic flap covering the inlet opening which allows suitable amounts of air to flow through the inlet to maintain a negative air pressure in the work area while having air flow in the work area sufficient to change the air at least every 10 to 15 minutes. The plastic flaps of the doors are preferably pivotally-mounted rigid clear plastic which seal automatically upon loss of negative air pressure in the work area. The rigid flaps can be electro-mechanically operated to positively control the size and functioning of air inlet openings and close off the openings upon emergency conditions.

대표청구항 ▼

A system for controlling access to and allowing air to flow into a sealed work area which is under negative air pressure and from which asbestos-containing material is removed, said system comprising: wall means for isolating the sealed work area and having at least one access opening therein; a dec

A system for controlling access to and allowing air to flow into a sealed work area which is under negative air pressure and from which asbestos-containing material is removed, said system comprising: wall means for isolating the sealed work area and having at least one access opening therein; a decontamination chamber in communication with said sealed work area through said one access opening and having at least two additional access openings therein; a rigid door assembly pivotally mounted in at least two of said access openings along a side edge for swinging movement during entry and exit of personnel to and from the sealed work area; and said door assembly including means for providing an air flow path for substantial volumes of air to enter into the work area under negative pressure and for sealing said air flow path automatically upon loss of negative air pressure in said work area.