Abstract: A launderable lead blanket cover system for rehabilitating contaminated lead blankets and which provides a lead blanket launderable cover. Lead blankets which can be removed from a nuclear facility or which are manufactured directly, include an outer cover which is heat sealed around the periphery to the inner lead blanket. The heat sealed periphery can include a plurality of blanket supporting metal grommets having a uniform predetermined spacing. A contaminated lead blanket which cannot be removed from a nuclear facility, has the contaminated cover removed in the nuclear facility and securing strips are secured to the inner cover. The contaminated lead blanket then is rehabilitated by adding a replaceable cover open on one end and having a heat sealed periphery and metal grommets in the other three sides. The open end with the lead blanket inside is then folded over and sealed, such as with an adhesive and then metal grommets can be secured through the sealed periphery to complete the lead blanket.

Abstract: A variable air flow orifice for variable air control structures including an adjustable flap panel formed over one opening in a wall or door of the negative air structure. The adjustable flap is formed in the panel and secured thereto by a zipper including one or a pair of zipper pulls. The opening also can be covered by a screen.

Abstract: A HEPA-type filter including a cannister body with an inlet and outlet coupled through a filter unit having at least one prefilter and a HEPA-type filter therein. The prefilter protects the HEPA-type filter from moisture and clogging. The module can include a fume hood to prevent hazardous material from escaping when a cannister liner or bag is replaced. The module can form part of the vacuum system for a hazardous waste removal system and is coupled to a conventional separate vacuum source for operation thereof.

Abstract: A portable negative air control unit and closure structure which can be utilized therewith to form enumerable different configurations. The basic unit includes a base which can be a shower containment pool, at least one closure structure having a door therein and top and side fabric walls which are removably attached to the closure structure, such as by zippers. The unit also can be attached to additional walls to form one of several interconnected units.

Abstract: A guard for a toilet hinge coupling a toilet seat to a toilet bowl. The guard includes an easily cleanable, impervious shield member that shields the toilet hinge and surrounding area from foreign matter, without interfering with the operation of the toilet hinge or movement of the toilet seat, and a member for releasably securing the shield member at least to the toilet bowl.

Abstract: An improved lightweight, collapsible preferably PVC formed glove bag asbestos brake removal/confinement system. The bag includes removable stiffening ribs and a replaceable flexible dual membrane opening in one end to mount the bag over the brake assembly. The bag is supported from a surface underneath by an adjustable telescoping pole. The bottom of the bag includes an access zipper for removing or placing tools or the brakes in the bag. The bag optionally includes a removable bottom protective panel to prevent penetration of the bag by tools or brakes dropped thereon. The interior of the bag can be accessed from either side or from the front thereof and is tapered or shaped as desired for easy access to the brake assembly work area.

Abstract: An improved glove box hazardous waste removal system especially for confining pipes, including a pair of semi-rigid side walls securable at one edge to one another to form a rigid cylindrical unit. The box includes sealable sleeves on each end thereof, sealable to the pipe being confined. The side walls include a flexible skirt attached to the opposite edge and including a sealable bottom opening on the skirt. The skirt includes an attachment structure for attaching disposable burial bags thereto.

Abstract: A lightweight, collapsible preferably PVC formed glove bag asbestos brake removal/confinement system. The bag includes removable stiffening ribs and a flexible membrane or bunge controlled opening in one end to mount the bag over the brake assembly. The bag can be suspended from the automobile itself, such as by a mechanical clamp or magnetic plate assembly, or from any convenient location. The bottom of the bag includes an access zipper for removing or placing tools or the brakes in the bag. The bag optionally includes a removable bottom protective panel to prevent penetration of the bag by tools or brakes dropped thereon.

Abstract: An improved glove bag hazardous waste removal system especially for confining pipes, including a top endless zipper for closing the bag onto the pipes and shoulder extensions with self retained shoulder straps for securing and removing the bag to and from the pipes. At least one self-sealing access sleeve is included in the bag wall for contamination free access to the interior thereof by water spray and vacuum probes. An internal self-closing tool pouch is formed on an inner bag wall. The bag preferably made of PVC, can include an internally sealable waste catch basin.

Abstract: An internal radiation attenuation system for a substantially enclosed radioactive work environment to protect and shield workers therein from radiation. The system decreases health hazards for workers and increases the safety margin within the environment. The method contemplates utilizing a frame which is formed from a plurality of interlocking segments which are quickly and easily assembled and disassembled. A plurality of radiation attenuation panels are slidably engaged upon the upper portion of the frame and a second plurality of radiation attenuation pads can be engaged to hang from the sides of the frame to substantially enclose a worker therein.

Abstract: An inspection and repair system for a substantially enclosed radioactive work environment to protect and shield workers therein from radiation. The system decreases health hazards for workers and increases the safety margin within the environment. The method contemplates utilizing a tank coupled to the environment for entrance thereto. The environment and the tank are filled with a radiation attenuating fluid which protects workers entering the environment through the tank. The workers are supplied with air from an external source for respiratory protection and relieving the worker of cumbersome self contained breathing apparatus. The system can also utilize pumps for circulating the water therein and a filter for filtering out contaminants.

Abstract: A portable self-supporting collapsible modular radiation attenuation system formed from a plurality of modules secured to one another in any desired alignment to protect workers from radiation exposure. The modules are skins assembled and shaped to mate with one another when secured thereto, such as by clip means. The skins are attached together and include a bladder which is filled with a radiation attenuating fluid. The modules mate with one another to eliminate radiation paths between the assembled modules. The modules are drained, disassembled and collapsed for storage. Also, an integral bladder can be included as a radaition plug.

Abstract: A self-supporting modular radiation attenuation system formed from a plurality of modules stacked on one another in any desired alignment to protect workers from radiation exposure. The modules include a skin assembled with a radiation attenuation medium therein and shaped to mate with one another when assembled. The medium can be lead particles or compressed lead wool. The outer module skin is sufficiently dimensionally stable to support stacking; however, flexible enough to allow the modules to conform to irregular surfaces. The modules can include a particle binder and the system can include framing to support the modules.

Abstract: An improved modular reactor head shielding system is provided that includes a frame which is removably assembled on a reactor head such that no structural or mechanical alteration of the head is required.The shielding system also includes hanging assemblies to mount flexible shielding pads on trolleys which can be moved along the frame. The assemblies allow individual pivoting movement of the pads. The pivoting movement along with the movement allowed by the trolleys provides ease of access to any point on the reactor head. The assemblies also facilitate safe and efficient mounting of the pads directly to and from storage containers such that workers have additional shielding throughout virtually the entire installation and removal process.The flexible shielding pads are designed to interleave with one another when assembled around the reactor head for substantially improved containment of radiation leakage.

Abstract: A modular reactor head shielding system formed from a plurality of flexible pads shaped to interleave with the edges of each adjacent pad around the reactor head. The shielding system is assembled to protect workers from radiation exposure in working in the area around the reactor head or when working on the reactor head during refueling of the reactor. The pads are formed by inserting a pair of blankets secured to one another inside a pair of outer covers which are secured to one another in offset relation to form an interleave or tongue and groove configuration to eliminate radiation paths between pads. The blankets are formed by quilting lead wool within the blanket covers. Each pad has a hanging plate secured to one end which can be hung from a frame around a reactor head or from the reactor head itself. The pads are secured to one another such as with straps to insure elimination of radiation paths therebetween.

Abstract: A supplied air respirator having a detachable air flow baffle therein, the baffle having increased air flow efficiency with a low noise operating level. The baffle is formed from a flexible plastic tubing having openings spaced laterally and circumferentially therein and having a foam layer sealingly secured there around and preferably having a cover thereover. The baffle can be formed in a partial or substantially complete loop within the respirator and is detachably secured therein with clips or loops.

Abstract: A portable self-supporting modular radiation attenuation system formed from a plurality of modules secured to one another in any desired alignment to protect workers from radiation exposure. The modules are hollow containers shaped to mate with one another when secured thereto such as by strapping. The modules can be a single height or stacked and include ports for filling the modules with attenuation fluid when assembled and emptying them when they are to be removed. The modules mate with one another to eliminate radiation paths between the assembled modules. The modules can be formed from fiberglass and can include internal reinforcing to maintain the mating shapes.

Abstract: A bag-like contaminant control work module formed from a flexible impervious membrane which is inflated inside of an enclosed workspace to protect workers in the module from contaminants. The workspace, such as in a nuclear power steam generator, has a portal or manway opening into the workspace into which the module is secured by a module passageway. The module includes one or more glove boxes, in which the workers perform their assigned tasks after passing through the passageway and portal. The module includes one or more absolute filters allowing passage of air flow through the module passageway and into the workspace only through the filters. The module may include an auxiliary passageway secured to the outside of the module passageway and also secured in the portal opening and through which items can be passed back and forth to the worker in the glove box from outside the portal.