1. 5.74 When working in an environment suspected of containing H2S, personal monitors must show a level below (or provide an alarm at) what limit?1) a. 5 ppm (10 ppm in USA)
2) b. 1 ppm (2 ppm in USA)
3) c. 15 ppm (20 ppm in USA)
4) d. 0.1 ppm (0.2 ppm in USA)
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2. 5.26 A portable electronic thermometer should always be grounded after the probe has been lowered into the liquid.1) a. True
2) b. False
3)
4)
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3. 5.54 What is the normal oxygen content of the air?1) a. 15.1%
2) b. 19.1%
3) c. 20.9%
4) d. 25.9%
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4. 5.24 As you enter a bunded/fire wall area to sample a fuel oil tank, you begin to feel dizzy. What action should you take?1) a. Get out of the tank area immediately
2) b. Take a deep breath and run for the tank ladder
3) c. Lie down because there is more oxygen closer to the ground
4) d. Immediately put on your respirator with organic cartridges
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5. 5.47 Someone must always stand watch at the entrance to the confined space while you are in it.1) a. True
2) b. False
3)
4)
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