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CETA Calculations With Verified Solutions

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CETA Calculations With Verified Solutions Explain how to calculate air changes per hour. - AnswersRoom dimension: length x width x height = cubic feet. Total CFM from all HEPA filters in room. Total CFM / Room volume x 60 = ACPH. Explain how to calculate air changes per hour from P...

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  • November 19, 2024
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  • 2024/2025
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©Themoon EXAM SOLUTIONS
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CETA Calculations With Verified Solutions



Explain how to calculate air changes per hour. - Answers✓✓Room dimension: length x width x
height = cubic feet.


Total CFM from all HEPA filters in room.


Total CFM / Room volume x 60 = ACPH.


Explain how to calculate air changes per hour from PEC - Answers✓✓Length x width x fpm =
CFM.


Total CFM divided by room volume x 60 = ACPH per that particle PEC.


Explain how to determine minimum CFM required from ceiling HEPA filters in HD room. -
Answers✓✓Take minimum 30 ACPH (or whatever ACPH for that ISO Class) / 60 = 0.5 and
multiply by the room volume (500 cu. ft.) =250 CFM total HEPA filtered air supply.


Explain how to calculate the quality of particle counts in a room. - Answers✓✓Take room
dimensions of 300" length x 413" width to achieve 123,900 in2 and divide by 144 = 860.417
ft2.


Convert feet to meters.
Take 860.417 ft2 x 0.093 = 80.02
Take the square root of 80.02. The number of sample locations for this room is 9.

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