BLACK SEAL FULL QUESTIONS AND CORRECT ANSWERS ALREADY PASSED PREP MATERIAL

BLACK SEAL FULL QUESTIONS AND
CORRECT ANSWERS ALREADY PASSED
PREP MATERIAL

●● When would a high suction line be used in a fuel tank?
Answer: when there is sludge or water in the tank


●● If not performed annually, what can cause a catastrophic event
Answer: Full boiler inspection


●● The science of heating and cooling with water is called
Answer: hydronics


●● What is the most common cause of cast iron boiler failure?
Answer: Cracking


●● What is the most common cause of problems in a hot water system?
Answer: air


●● A steam gauge is calibrated in
Answer: pounds per square inch

, ●● What code is a heating boiler built to
Answer: ASME Section IV


●● The expansion tank is a hot water system allows for the expansion of
Answer: water


●● As the water in a hot water system expands
Answer: pressure remains constant


●● The most common type of pressure control device used is the
Answer: Mercury tube


●● Heavy soot on the fireside of tubes:
Answer: Should be removed for better heat transfer


●● When connecting a Bourdon tube steam gauge to a boiler, a pigtail is
used to
Answer: protect bourdon tube from steam


●● What is the min. temp. of a hot water boiler operation to prevent
condensation?
Answer: 170 F