Antifreeze should be used on the cooling tower even if the plan is to drain the tower for cold spells, because:
A) Antifreeze descales the pipes. B) A sudden cold spell can freeze the system.
C) Antifreeze aids in draining the tower. D) Most municipalities require it.
B
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Indirect causes of incidents are also known as _____.
a. near misses b. Level III hazards c. unsafe acts and conditions d. root causes
Modular bridge-deck panels that have increased ability to resist the corrosive effects of weather and deicing salts are made from _____.
a. fiber-reinforced plastic b. air-entrained concrete c. recycled rubber d. polycarbonate-sheathed steel gratings
What type of thread lubricant should be used when connecting the oxygen regulator to the oxygen cylinder?
A) Teflon tape B) Only nonflammable packing C) Light-weight machine oil D) No lubricant or sealant of any kind should be used.