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1. Which of the following statements is incorrect regarding fires in residential garages?

A. The cables and springs that raise the door can fail, allowing the door to slam shut. This can burst hose and trap firefighters inside.
B. Anytime you pass through a roll-down door, you should prop it up so that it can not come down unexpectedly.
C. This can be accomplished by wedging the tip of a six-foot pike pole into the track.
D. This can be accomplished by clamping a vise grip onto the track under the raised door.
E. All answers are correct.

Answer: E

2. Always notify your gas utility of a water main break. True or false?

Answer: True A water-main leak can wash away the soil underneath the concrete and asphalt . If a cast iron gas pipe runs through the area, it too could be undermined and as a result break and leak.

3. The ignition of natural gas in a confined space can result in a combustion explosion. A combustion explosion results in heated air expanding rapidly. It doubles in volume for every 459 degrees F. This creates pressures inside the building which can be as high as _____psi.

Answer: 60 to 110 psi. Most buildings won't be able to withstand a pressure increase of more than 1 psi without failing.

4. Should water be applied to a burning on pole electrical transformer?

Answer: No. The water applied to a damaged transformer or arcing wires may cause a short, which in turn can cause an explosion.

5. Halogen lamps can reach temperatures in excess of 1,000degrees F and have been the cause of fires when proper precautions are not followed. What do manufactures offer to reduce fire danger?

Answer: Manufactures of these lamps are offering to retrofit them with protective guards intended to reduce the fire danger.

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