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English Instructor Manual (PDF) - Metric Version - National ...

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Chapter 8 – Methods for Routine Control of RWIs<br />

Chapter: Chapter 8 (pages 65-84)<br />

Suggested Time:<br />

PowerPoint Slides:<br />

Materials:<br />

60 minutes<br />

Chapter 8 PowerPoint Slides<br />

Recreational Water Illnesses Handbook<br />

Objectives: At the end of this chapter the student will be able to:<br />

List the sources of pathogenic microorganisms that cause RWIs<br />

Explain the recommended methods for control of infectious RWIs<br />

Reason for monitoring disinfection systems<br />

How to control chemically induced RWIs<br />

The need for bather education in the control of RWIs<br />

Leading Questions:<br />

What steps would you take to prevent and control RWIs in your facility?<br />

What do you believe is the most important step in the prevention of RWIs in your<br />

facility?<br />

Who should be trained at the aquatic facility and why?<br />

Key Points: List the sources of pathogenic microorganisms. Be sure to include the following (pp<br />

66-68).<br />

Discuss fi ll/replacement water as a source<br />

Discuss person-to-person spread<br />

Discuss outbreaks that arise from biofi lms<br />

Key Points: List the various methods of controlling infectious RWIs (pp. 68-74). Be sure to<br />

include the following:<br />

The need for maintaining a constant residual in the water<br />

What is meant by a minimum disinfectant concentration<br />

A defi nition of CT values<br />

Mathematical equation for calculating a CT value<br />

How CT values can assist an operator<br />

Perform a sample CT value calculation<br />

CDC minimum CT values for selected pathogens<br />

Which infectious RWIs are most diffi cult to control?<br />

Key Points: Explain effective methods of monitoring disinfectant (p. 75). Be sure to include the<br />

following:<br />

How often to monitor<br />

Methods available to monitor<br />

Effectiveness of the various monitoring methods<br />

© 2014 <strong>National</strong> Swimming Pool Foundation® Page 163

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