Author Question: How can the risk of fire because of static electrical discharge in the presence of O2 be minimized? ... (Read 39 times)

Tazate · **on:** Jul 16, 2018

How can the risk of fire because of static electrical discharge in the presence of O2 be minimized?

a. Use only wool or polyester fabrics in the area of use.
b. Keep O2 concentrations well below 21.
c. Maintain high relative humidity in the area of use.
d. Keep O2 in high-pressure storage cylin-ders.

Question 2

Which of the following statements are true regarding the use of O2? 1. O2 is flammable. 2. O2 accelerates the rate of combustion. 3. Increased O2 concentration accelerates the rate of combustion.

a. 1 and 2 only
b. 2 and 3 only
c. 1 and 3 only
d. 1, 2, and 3

Li Jun · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: C
The minimal risk that may be present can be further reduced by maintaining high relative humid-ity (>60).

Answer to Question 2

ANS: B
Although O2 is nonflammable, it greatly accelerates the rate of combustion. Burning speed in-creases with an increase in either the concentration or partial pressure of O2.