AOHCT Heat Exchangers – Cooling Towers
| Performance
Objectives: |
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| Topic
1: Introduction |
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| 1.1
Identify a cooling water system and its
components, including a cooling tower,
a circulating pump, a heat exchanger,
and circulating water lines. |
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| 1.2
Identify cooling towers at your site as
natural draft, forced draft, or induced
draft towers. |
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| 1.3
Locate and identify the following parts
of a cooling tower: cells, cooling water
return lines, troughs, fans, distribution
nozzles, packing, draft eliminator, basin,
makeup water inlet, blowdown valve,
air inlet louvers. |
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| 1.4
Explain how the water level in the basin
of a cooling tower at your site is controlled. |
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| 1.5
Locate and identify the level control equipment on the tower. |
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| Topic
2: Operation |
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| 2.1
Perform the pre-startup checks for a cooling
tower at your site and start up the tower. |
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| 2.2
Explain how the amount of cooling provided
by a cooling tower at your site is controlled
to match unit cooling requirements. |
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| Topic
3: Chemistry |
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| 3.1
Name the chemicals added to the water in a
cooling system at your site to control suspended solids and dissolved solids. |
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| 3.2
Locate the material safety data sheet (MSDS)
for each of the chemicals. Describe the
handling instructions and personal protective
equipment for each chemical as given on the
MSDS. |
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| 3.3
Take a sample of cooling water. Conduct
standard tests for dissolved and suspended
solids and interpret the results. |
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| 3.4
Locate the chemical addition equipment for
dissolved and suspended solids and identify
each piece of equipment. |
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| 3.5
Name the chemicals added to the water in a
cooling system at your site to control dissolved
gases and micro-organisms. |
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| 3.6
Explain what each chemical does and how it is
added to the system. |
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| 3.7
Locate the material safety data sheet (MSDS)
for each of the chemicals. Describe the handling
instructions and personal protective equipment
for each chemical as given on the MSDS. |
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| 3.8
Take a sample of cooling water. Conduct
standard tests for dissolved gases and microorganisms and interpret the
results. |
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| 3.9
Describe how the addition of chlorine to
cooling water is controlled. |
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