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CETA Calculations Exam Questions and Answers |100% Pass

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CETA Calculations Exam Questions and Answers |100% Pass Explain how to calculate air changes per hour. - Answer-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 fro...

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CETA Calculations Exam Questions and
Answers |100% Pass

Explain how to calculate air changes per hour. - Answer✔✔-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 - Answer✔✔-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. - Answer✔✔-

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. - Answer✔✔-Take room dimensions of

300" length x 413" width to achieve 123,900 in2 and divide by 144 = 860.417 ft2.




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