ATLANTA - The American Society of Heating, Refrigerating and Air-Conditioning Engineers will host a satellite broadcast on homeland security issues.

The society has been awarded a grant from the Alfred P. Sloan Foundation in New York to host the broadcast, scheduled for 12 p.m. April 14.

Topics are to include risk assessment and protecting buildings from chemical, biological and radiological dangers, ventilation systems, particle filtration and gas absorption, pressure relationships and building-interior partitioning. There will also be an update on building codes and standards.

"By using a satellite broadcast to reach our 162 chapters and other associations and industry representatives, ASHRAE can bring vital information to thousands of design engineers, architects, builders, building owners and operators, code officials, medical personnel, first responders and others to educate and inform them on protection of buildings," said Ron Vallort, P.E., who will chair the broadcast.

Participants can e-mail questions and comments during the live question-and-answer session, ASHRAE said.