Cooling Tower Maintenance Legionella Awareness. 4 th Installment. CTM/Ashland Presentations. Legionella Awareness – 2003 Filtration of Cooling Waters – 2005 Legionella Risk Management – 2006 Legionella Proactive Protocol – 2008 Legionella Refresher -- 2011 Literature References.
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Cooling Tower Maintenance Legionella Awareness
Systems Promoting Growth
Effects of Cooling System Dynamics – cfu/ml Same Day Comparative Samples(Example System Treated with Continuous Oxidant and Slug Feed of Glutaraldehyde Once Per Week)
Continuous Oxidant Feed Protocol
*Alternative choices of non-oxidizing biocide should be based on Relative Population Density (RPD) lab results
*Alternative choices of non-oxidizing biocide should be based on RPD results
Legionella Testing Requirements
Frequency of Cleaning/Disinfection
(i.e. beginning of August).
Planning and Record Keeping
Intensive microbiological treatment program
Sterilization and cleaning
Monitoring and control
Inspection for visible slime or sludge's
Corrosion or biofilm coupons