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CPO Durham Course HOMEWORK |
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CPO Durham Course HOMEWORK |
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1. |
Definitions |
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a) |
Free Available Chlorine (FAC) |
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b) |
Chloramine |
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c) |
Breakpoint |
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d) |
Turnover |
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e) |
Part per million (ppm) or Milliogram per Liter (mg/L) |
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2. |
Pool Regulations |
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a) |
How soon (minutes or hours) before a pool is open to the public must it be checked and have readings recorded? |
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b) |
Once the pool is open to the public how often must it be checked and have readings recorded with and without an Automated Sensing Device? |
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c) |
What is the minimal allowable level of disinfectant/sanitizer (chlorine) in order for your pool to be open to the public? |
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d) |
What is the acceptable range for pH according to the pool regulations? |
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e) |
What is the acceptable chlorine level for spas according to the pool regulations? |
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f) |
What should be visible at the deepest point of any pool and from how far away? |
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g) |
A pool that is constructed after April 30, 1974 MUST turnover the water how many times in a day at a minimum? |
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h) |
Give me one other regulation that you remember. |
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3) |
Surface Area |
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a) |
What is the surface area of a pool that is 12 metres wide and 25 metres long and has a constant depth of 2 metres? |
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b) |
What is the surface area of a spa that has a 6 metre diameter? |
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4. |
Pool Volume |
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You are operating a pool that is 75 metres long and 20 metres wide. The pool is divided into two areas: a swimming area and a diving well. The swimming area is 50 metres in length and has a depth range of 1 metre to 3 metres (constant slope). The diving well is the remaining 25 metres and has a constant depth of 8 meters. What is the volume of this pool? |
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5. |
True or False |
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a) |
It is ok to get pool water in our mouths (worth 2 marks!!) |
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b) |
Bathers must shower with soap and water before entering the pool. |
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c) |
As my pH increases, so does the effectiveness of my chlorine. |
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d) |
The killing agent of chlorine is OCl. |
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e) |
Giardia parasite is our biggest concern in a loose fecal accident in our pool as it takes the longest to kill with chlorine. |
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f) |
Only the lifeguards are responsible for closing the pool should an unsafe condition be present. |
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g) |
You should always add water to chemical to ensure operator safety. |
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h) |
You must replace 5 L of water for every bather who enters your pool. |
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i) |
If you can smell chlorine, there is too much of it in the pool. |
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6. |
A 460,000 L pool has the following readings: Total Alkalinity of 50mg/L, a pH of 7.1, a temperature of 28.8 degrees Celcius, a calcium hardness reading of 100 mg/L and a TDS of 750 mg/L. |
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a) |
The saturation index is: |
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b) |
The saturation index indicates the water is: |
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c) |
The calcium hardness is within the ideal range? |
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d) |
The total alkalinity is within the ideal range? |
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7. |
Using the pool in question 6, use calcium chloride (77%). How many kilos would be needed to increase the calcium hardness to 200 mg/L? |
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8. |
In this pool, use sodium bicarbonate. How many kilos would be required to raise the total alkalinity 30 mg/L? |
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9. |
What is the turnover rate in hours for a 246,000 L pool with a flow rate of 745 L/min? |
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10. |
What is the flow rate in litres per minute for a pool with 200,000 L that has a turnover rate of 4 hours? |
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11. |
The kilojoules needed to raise the temperature of a 9,000L spa from 15 degrees Celcius to 37 degrees Celcius? |
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12. |
What type of pump is used for the circulation of water? |
