STUDY GUIDE KEY CONCEPTS AND ANSWERS
A+
◉ The person conducting the fire watch ______ have other duties.
Answer: CANNOT
◉ A portable fire extinguisher with a rating of _________ is required
and should be within ____ feet travel distance hot work area. Answer:
2-A:20-B:C///30
◉ For ROOFING OPERATIONS, a portable fire extinguisher with a
minimum rating of ______ is required. Answer: 3-A:40-B:C
◉ Fire watch on floors below is ______. Answer: required
◉ The fire watch must continue for a minimum of ____ minutes after
the hot work is done. Answer: 30
◉ For any CNG or LPG torch operations, the first inspection shall be
conducted ___ minutes after completion. The second inspection shall
be conducted _______ after completion of torch operations.. Answer:
30 min///1 hour
, ◉ The fire guard or fire watch personnel must complete a signed
inspection report and it must be submitted to and retained by the
person in charge of the torch operations.. Answer: The report must
be made available and maintained on the premises for a minimum of
48 hours after the work is complete.
◉ Most common fuel gasses used in blowtorches are ______. Answer:
LPG (butane, propane) natural gas (methane) (either CNG or piped
natural gasses)
◉ Soldering and brazing temperatures are typically______. Answer:
840 degrees F
◉ Oxy-acetylene generates the highest temperature which can reach
up to _____. Answer: 6000 degrees F
◉ Gas torches can exceed _________ and are used for burning weeds,
melting ice, or applying tar to a roof. Answer: 2000 degrees F
◉ If the torch operation is to stop for a period of _________________, the
torch vale must be closed and the gas supply to the torch must be
completely shut. Answer: 1 hour or more