Survey Report: Control Technology Evaluation for Controlling Worker Exposure to Asphalt Fume From Roofing Kettles: Kettle Operated Using an Afterburner System at Glenwood Elementary School San Rafael, California

摘要

From July 16 through 25, 2002, a field survey was conducted at Glenwood Elementary School in San Rafael, California where a built up asphalt roof was being installed to replace the old roof. The school was undergoing a complete renovation. A separate crew had previously removed the old roof, and a different crew installed the new roof. The survey was conducted to evaluate the effectiveness of using an afterburner system with a safety loading door fitted to an asphalt kettle to reduce worker exposure to asphalt fumes. Personal breathing zone and area air samples were collected and analyzed for total particulate (TP), benzene soluble fraction (BSF) of the TP, and total polycyclic aromatic compounds (PAC). These three analyses were chosen to represent indices of exposure to asphalt fumes. Air samples were collected with the afterburner on and kettle lid closed and afterburner off and kettle lid closed. Air samples were collected on the kettle operator and two roof level workers; area air samples were collected around the four corners of the kettle.