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Author Question: If the working pressure of a bulk oxygen system is 45 psig, all pressure-relief valves should be set ... (Read 74 times)

azncindy619

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on: Jul 16, 2018
If the working pressure of a bulk oxygen system is 45 psig, all pressure-relief valves should be set at _____ psig.
 
  a. 45 c. 67
  b. 50 d. 80

Question 2

Approximately how long will a liquid oxygen reservoir last when supplying 3 L/min to your pa-tient? The current reservoir weight is 20 lb, and the weight of an empty reservoir is 10 lb.
 
  a. 19 hours c. 46 hours
  b. 38 hours d. 119 hours


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kswal303

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: C
All pressure-relief valves are set 50 higher than the system working pressure (e.g., set at 75 psi for a 50-psi system pressure).

Answer to Question 2

ANS: A
Subtract 10 lb from 20 lb = 10 lb. Convert 10 lb/2.5 lb/L= 4 L. 4  860 = 3440 L. Then divide by the flow 3440 L/3 L/min = 1146 minutes, or 19 hours.


azncindy619

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Reply 2 on: Jul 16, 2018
Gracias!

Mochi

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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