NYC-WTC_000233286

NYC 9/11 Public Portal Document

exiting the enclosure or clean personal protective equipment if returning to another regulated abatement work area.

56-8.4 Handling and Removal Procedures.

(a) Glovebag Procedures. Glovebags are allowed to be utilized for abatement of pipe or duct insulation within negative pressurized regulated abatement work area enclosures. Glovebags may only be used on piping and ducts up to 150 degrees Fahrenheit. The following procedures must be followed for glovebag use:

(1) Size. When abating pipe or duct insulation, the pipe or duct insulation diameter worked shall not exceed one half the bag working length. (2) Sealing. Duct tape shall be placed securely around the area of abatement to form a smooth seal. The glovebag shall then be secured to the duct tape and sealed airtight. (3) Seal Testing. After placement, each glovebag shall be subjected to and pass a smoke test as follows: (i) Smoke testing should not be completed using a positive pressure test. The glovebag, once secured in place, should be placed under negative pressure, utilizing the HEPA-vacuum, and a smoke tube should be aspirated to direct smoke at all seals and seams from outside the glovebag. (ii) If there are any leaks, they will be detected by the smoke entering the bag. All leaks shall be duct taped airtight. (4) Surface Irregularities. If material adjacent to the work section is damaged, or if it terminates, is jointed or contains an irregularity adjacent to the work section, the material shall be wrapped in at least six (6) mil fire-retardant plastic sheeting and sealed airtight with duct tape. (5) Post-Stripping Wetting. After the asbestos material has been stripped, the surface from which it has been removed shall be wetted with amended water and scrubbed with a brush or abrasive pad to remove all visible asbestos material. The surfaces from which it has been removed, the interior of the bag, the affected area and the tools shall then be thoroughly wetted with amended water. (6) Sealing of Pipe Ends. When abating pipe insulation, any pipe insulation ends created shall be sealed with wettable cloth or otherwise encapsulated with a non-asbestos product. (7) Collapsing of the Glovebag. A HEPA-vacuum shall be used to collapse the glovebag. (8) Tool Segregation. With the glovebag collapsed and the asbestos material in the bottom of the bag, twist the bag several times and duct tape the twist to seal that section. The tool pouch shall be separated from

12 NYCRR56 Subparts, Page 76

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NYC-WTC_000233362