Abstract: A repository definition computer program may (1) retrieve repository data from data repositories; (2) identify a data repository structure for each data repository; (3) generating data repository definitions for the data repositories; (4) provide the data repository definitions in a data serialization language to a repository management system; and (5) generate a hash of each file in the data repositories and save a copy of each file named its hash. A UAT management system computer program may (6) execute a repository extract process to repave one the data repositories with the hash-named files. The repository extract computer program may (7) retrieve the data repository definitions for the data repository being repaved from a repository management system server; (8) retrieve the hash-named files from object storage for the data repository being repaved; and (9) recreate the data repository from the data repository definitions using hard links to the hash-named files.

Abstract: A pouch is provided for the blower unit of a powered air-purifying respirator system, to isolate the blower unit from hazardous material such as potentially-explosive dust or gas. The pouch has an opening at one end through which the blower unit can be inserted into the pouch, and is shaped at the other end to receive the blower unit. It also has air inlet openings positioned to register with air inlets of the blower and permit the connection of the filter cartridges thereto, and an air outlet opening positioned to register with the air outlet of the blower unit and permit the connection thereto of a breathing tube of the respirator system. When the blower unit is inside the pouch, seals at the pouch openings inhibit or prevent particulate or gaseous material from entering the pouch through the openings.

Abstract: A pouch is provided for the blower unit of a powered air-purifying respirator system, to isolate the blower unit from hazardous material such as potentially-explosive dust or gas. The pouch has an opening at one end through which the blower unit can be inserted into the pouch, and is shaped at the other end to receive the blower unit. It also has air inlet openings positioned to register with air inlets of the blower and permit the connection of the filter cartridges thereto, and an air outlet opening positioned to register with the air outlet of the blower unit and permit the connection thereto of a breathing tube of the respirator system. When the blower unit is inside the pouch, sealing means at the pouch openings inhibit or prevent particulate or gaseous material from entering the pouch through the openings.

Abstract: A respiratory mask 1 has a molded, cup-shaped, shape-retaining shell 10 on the concave side of which is a layer of filter material 11 and, on the concave side of the filter material, without any intermediate shape-retaining layer, a layer of nonwoven material 12. The layer of filter material 11 and the inside layer 12 are conformed into the cup-shaped configuration of the shape-retaining shell 10. The inside layer 12 is preferably a smooth BMF material offering improved comfort to the wearer.