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State of California Department of Pesticide Regulation - page 71 / 104

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REVIEW QUESTIONS

1.

Corrosion of the metal components of an open recirculating water cooling system are the result of water contact with air and

. Scale deposits Algae Bacteria A B. C.

D. Minerals

2.

The buildup of organic and inorganic materials on surfaces of the water cooling tower interferes with

. Efficient pump operation The ability to maintain a stable water level Proper heat exchange A B. C.

D. Microbial growth

  • 3.

    A slime consists of

    • A.

      A combination of certain minerals and algae

    • B.

      Algae combined with certain fungi

    • C.

      A combination of fungi, bacteria, and algae

    • D.

      Bacteria combined with certain algae

4.

To determine the proper dosage of antimicrobial pesticides in a water cooling tower system, consult

. The facility manager Cooling tower manufacturer literature The antimicrobial pesticide label A B. C.

D. The service technician handbook

  • 5.

    To prevent environmental contamination or injury to people

    • A.

      Use properly calibrated testing equipment to monitor antimicrobial levels in cooling tower water

    • B.

      Apply antimicrobial pesticides to cooling tower water at frequent intervals

    • C.

      Apply the maximum dose to cooling tower water as prescribed by the pesticide label

    • D.

      Dose the cooling tower water immediately after blowdown and again within 24 hours

Turn to Page 71 for Review Question Answers

MICROORGANISM CONTROL IN WATER COOLING SYSTEMS

63

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