Section 855.510  Enclosure Procedures for Schools

The contractor shall enclose ACBM in accordance with the following procedures:

a)         The work area shall be cleaned and isolated in accordance with Sections 855.400, 855.410, 855.420, 855.425, 855.430, 855.440 and 855.450.

b)         Areas that may be disturbed during the installation of hangers or other support/framing materials for the enclosure shall be sprayed with amended water.  These areas shall be kept damp to reduce airborne fiber concentrations.

c)         Loose and hanging ACBM shall be removed in accordance with the requirements of Section 855.460.

d)         After installation of hangers, brackets or other enclosure supports and before installation of enclosure, damaged areas of fireproofing/thermal insulation materials shall be repaired using a nonasbestos-containing replacement material.  Surfaces shall be prepared and replacement material applied in accordance with manufacturer's recommendations.

e)         Hand tools used to drill, cut into, or otherwise disturb ACBM during the installation of support systems for the enclosures shall be equipped with HEPA filtered local exhaust ventilation.

f)         Enclosure materials shall be impact resistant and provide an airtight barrier once construction is complete (see Section 855.390(i)).

g)         Utilities shall be lowered as necessary and reinstalled in a manner which permits proper utilization and does not disturb the integrity of the enclosures.  Utility maintenance shall not require the enclosures to be opened or disturbed.

h)         Cleanup shall be in accordance with Section 855.465.

i)          Enclosed ACBM shall be designated (e.g., sign, label or color code) in order to warn building maintenance personnel in the event that the enclosure must be disturbed.