Question $21$

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Which element of the fire triangle does the control strategy of vacuum inerting impact?

Question $21$ options:

A$)$ This control removes fuel

B$)$ This control adds fuel

C$)$ This control removes oxidant

D$)$ This control adds oxidant

E$)$ This control removes sources of ignition

Question $22$

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An example of an engineering control is:

Question $22$ options:

A$)$ A written procedure explaining how to weld safely

B$)$ Replacing a lead$-$based paint with a lead$-$free paint

C$)$ The design and installation of a ventilation hood and system to draw welding fume away from the welder and into an exhaust duct

D$)$ Restricting work on hot days to the coolest part of the day to avoid exposing outside workers to excessive heat

E$)$ None of the above