English Instructor Manual (PDF) - National Swimming Pool Foundation

Gas feeders Points to consider when inspecting the feeder system of a facilityKey Points: Provide an overview of gas chlorination systems. Include a discussion of: Health considerations when handling gas chlorine Special requirements associated with gas chlorine utilization Storage of cylindersKey Points: Provide a brief discussion of other disinfectant chemicals that an inspector mightencounter during an inspection.Key Points: Defi ne pH and the range of pH values commonly associated with swimming pool andspas. Include a discussion of: Ideal pH values, acceptable pH values The effect of pH values outside the generally accepted range Chemicals generally used to adjust pH in pools or spaKey Points: Discuss proper chemical handling and storage. Include a discussion of: NFPA guidelines on how to properly store chemicals considered oxidizers Hazard communication and personal protection equipment recommendations Instructor can use chemical storage video to enhance this lessonKey Points: Provide a brief overview of test kits and testing procedures. Show water testing videocontained on the instructor DVD and then discuss the following: The four basic methods of testing pool/spa water The two measurements that have the greatest infl uence on public health illnessprevention The use of DPD test procedures that allow for differentiation between free chlorine andtotal chlorine values in a pool/spa The requirements for automated testing procedures and ORP valuesKey Points: Discuss how to determine pool/spa water balance. Include a discussion of: What a SI value indicates to a pool/spa operator or inspector The chemical test needed to determine a SI value for a facility How to handle a tested value that does not have a specifi c factor on the SI factor chartKey Points: Have student practice calculating an SI for a given facility. Include: How to properly use and interpret the table on page 19 as it applies to local codes A teacher lead example of the calculation procedure Student practice of calculation procedure The order and sequence of steps to adjust for a value that should be adjusted tobalance a pool/spaFinal Questions: Ask the participants if they have any questions pertaining to the lesson theyhave just completed. If there are participants who are still having trouble with the concepts of thislesson, offer additional help during a break or after class.Page 180© 2014 National Swimming Pool Foundation®