1072. 3(d) 1072. 3(g) the release of spent abrasive , dust, and debris. If spent abrasive , dust, or debris is observed falling through gaps in the decking, seal the decking so that emissions are controlled or install tarpaulins over the decking. Verify that the platform and its components are designed and constructed to support at least 4 times its maximum intended load without failure with wire cables capable of supporting at least 6 times their intended load without failure, if a suspended or el evated platform is constructed to serve as the base of the containment. Follow applicable OSHA regulations regarding scaffolding. Design each SSPC Guide 6 Class 1A or 2A containment system to meet minimum air flow velocities of 60 feet per minute down -draft or 100 feet per minute cross -draft. Remove debris from the containment materials and equipment before relocation to another point along the structure. Clean to the extent that debris or dust are not dislodged by winds or physical contact during handling and transportation.
and equipment on site to contain inadvertent spills or releases of dust and debris, when working over or near water. Materials and equipment that are typically acceptable include water booms and boats with skimmers. Remove project -related dust and debris from the surface of the water or from sediment immediately .
that the containment will extend below the bottom of the bridge (i.e. below the bottom chord) when operating in the navigation channel. Maintain this distance to the absolute minimum required. Obtain advance approval from the Coast Guard any time that the work necessitates partial or total restrictions to the movement of vessels beneath the bridge. Provide the Coast Guard with the request at least 30 days before the need to commence such activities. Design the containment to allow it to be moved out of the navigation channel within 24 hours of notification that ships needing additional clearance require passage, unless otherwise directed by the Coast Guard. Provide the Representative and the Coast Guard with a 24 -hour telephone number and contacts for discussions regarding the containment system. Notify the Army Corps of Engineers and PA Fish and Boat Commission, where applicable, of the intended work, and comply with any restrictions or conditions.
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