When: Tuesday, September 13th from 11:30-1:00pm

Where: Jack Wood Hall in the Adventure Science Center (800 Fort Negley Blvd., Nashville, TN  37203)
 

Topic: ASHRAE 188 – Legionellosis – Risk Management Strategies

About the Speaker:
 

Dan Weimar is the Manager of Business Development Engineering for Chem-Aqua, a global water treatment company headquartered in Irving, Texas. Over the course of his 36 year career, his primary focus has been steam plant operations and cooling systems with a heavy emphasis in the last 20 years on water and energy conservation.  Dan is a past voting member of ASHRAE’s Technical Committees, TC 3.6 for Water Treatment and TC 8.6 for Cooling Towers/Evaporative Cooling as well as past Chair of the TC 3.6 Handbook Committee for Water Treatment.

Mr. Weimar’s presentation will be “ASHRAE 188 Legionellosis – Risk Management Strategies”.  Legionnaires’ disease is a form of pneumonia, which principally affects the elderly (especially males), smokers, dialysis patients and people whose defense systems are impaired.  The Centers for Disease Control (CDC) estimates that in the U.S. there are about 8,000 to 18,000 cases of Legionnaires’ disease every year, with about 3,000 reported. It is caused by the inhalation of aerosolized water droplets of breathable size (1 – 5 µm) contaminated by the infectious strains of Legionella bacteria.  Legionella bacteria can be found in natural water sources (rivers, lakes, or streams), mud, and soil samples. It has been isolated from environmental water sources such as evaporative condensers, cooling towers, air handling equipment and humidifiers.  Legionella can also be found in potable water sources such as shower heads, water fixtures and ice machines.