BLACK SEAL ACTUAL TEST QUESTIONS
WITH COMPLETE SOLUTION VERIFIED
RESOURCE
●● While making a round of your boiler room, the boiler feedwater
pump is making a strange noise. The pump casing and the temperature
of the water has risen above normal. What would most likely cause this
problem?
Answer: pump cavitation issue
●● What is the function of a dry pipe in a boiler?
Answer: to remove moisture from the steam drum
●● What is the heating surface of water-tube, with a diameter of 3 1/2
inches and a length of 20 feet?
Answer: 18.32 sq. ft
●● One mechanical horsepower is equal to:
Answer: 33,000 ft-lb/min
●● What is the regulation corresponding to boiler, pressure vessels and
refrigeration systems in New Jersey?
Answer: New Jersey Administrative Code (NJAC) 12:90
, ●● According to the codes and standards adopted and incorporated by
reference of the boiler pressure vessels and refrigeration regulations,
welded repairs and any alternations made to the boilers must comply
with what?
Answer: The original Code of construction when it was built
●● T/F The examining board of the mechanical inspection bureau of
boiler and pressure vessel compliance may consider an applicant
experience of an equivalent amount for grade or classification from
some other jurisdictional authority (state or federal).
Answer: True
●● In your boiler plant you have pumps that are used for numerous
applications. One of the pumps has a small amount of liquid coming
from the packing gland. Is this normal or is it a problem?
Answer: this is normal and is necessary to lubricate and cool the
packing.
●● The purpose of backseating a manual valve in an operating system is
to:
Answer: isolate system pressure from the packing stuffing box to
minimize packing leakage.
WITH COMPLETE SOLUTION VERIFIED
RESOURCE
●● While making a round of your boiler room, the boiler feedwater
pump is making a strange noise. The pump casing and the temperature
of the water has risen above normal. What would most likely cause this
problem?
Answer: pump cavitation issue
●● What is the function of a dry pipe in a boiler?
Answer: to remove moisture from the steam drum
●● What is the heating surface of water-tube, with a diameter of 3 1/2
inches and a length of 20 feet?
Answer: 18.32 sq. ft
●● One mechanical horsepower is equal to:
Answer: 33,000 ft-lb/min
●● What is the regulation corresponding to boiler, pressure vessels and
refrigeration systems in New Jersey?
Answer: New Jersey Administrative Code (NJAC) 12:90
, ●● According to the codes and standards adopted and incorporated by
reference of the boiler pressure vessels and refrigeration regulations,
welded repairs and any alternations made to the boilers must comply
with what?
Answer: The original Code of construction when it was built
●● T/F The examining board of the mechanical inspection bureau of
boiler and pressure vessel compliance may consider an applicant
experience of an equivalent amount for grade or classification from
some other jurisdictional authority (state or federal).
Answer: True
●● In your boiler plant you have pumps that are used for numerous
applications. One of the pumps has a small amount of liquid coming
from the packing gland. Is this normal or is it a problem?
Answer: this is normal and is necessary to lubricate and cool the
packing.
●● The purpose of backseating a manual valve in an operating system is
to:
Answer: isolate system pressure from the packing stuffing box to
minimize packing leakage.
