1|Page
NJ Black Seal Exam Preparation Version 3 Newest
Verified Exam With Complete Questions And Correct
Detailed Answers|| Newest Exam!!!!
In your boiler plant you have two 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
What is the primary purpose of a feedwater regulator? -
Answer-to maintain the water level in the boiler at the
proper level
Which of the following valves is used in a steam feedwater
supply line to control the direction of fluid flow to prevent
backflow in a system? - Answer-check valve
What is the prime purpose of the try cocks found on
boilers? - Answer-to ascertain the water level in the boiler
,2|Page
The most important rule in the safe operation of a steam
boiler is to: - Answer-keep the boiler water at the proper
level
An operator must be familiar with how water pressure
works and the basic concepts that determine pressure
head. Therefore, a column of water 1-inch and 1-foot high
weighs how much? - Answer-.433 lbs
When taking over a shift, the operator must first check: -
Answer-water level on all boilers online by blowing down
the water column and gauge glass
The water temperature indicator of a hot water heating
boiler should measure the temperature: - Answer-at the
boiler supply
What should new or re-tubed boilers be cleaned with? -
Answer-an alkaline detergent solution
What will excessive oxygen in the boiler water cause to
take place? - Answer-pitting of boiler metal
, 3|Page
On a pH scale what number would represent the most
acidic of a solution of feedwater? - Answer-The most
acidic would be 0
What chemical would be used to control alkalinity in a
boiler? - Answer-caustic soda
Which of the following would cause scale to form in a low
pressure boiler? - Answer-calcium and magnesium
At what pH should the boiler water in a low pressure boiler
be maintained? - Answer-pH 11
The most positive means of determining the actual water
level in a steam boiler is to: - Answer-operate the try-cocks
Of the following, the best way to determine the water level
in a steam boiler is: - Answer-by the use of the try-cocks
A common type of feedwater regulator found on low
pressure boilers is a: - Answer-pressure sensitive device
NJ Black Seal Exam Preparation Version 3 Newest
Verified Exam With Complete Questions And Correct
Detailed Answers|| Newest Exam!!!!
In your boiler plant you have two 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
What is the primary purpose of a feedwater regulator? -
Answer-to maintain the water level in the boiler at the
proper level
Which of the following valves is used in a steam feedwater
supply line to control the direction of fluid flow to prevent
backflow in a system? - Answer-check valve
What is the prime purpose of the try cocks found on
boilers? - Answer-to ascertain the water level in the boiler
,2|Page
The most important rule in the safe operation of a steam
boiler is to: - Answer-keep the boiler water at the proper
level
An operator must be familiar with how water pressure
works and the basic concepts that determine pressure
head. Therefore, a column of water 1-inch and 1-foot high
weighs how much? - Answer-.433 lbs
When taking over a shift, the operator must first check: -
Answer-water level on all boilers online by blowing down
the water column and gauge glass
The water temperature indicator of a hot water heating
boiler should measure the temperature: - Answer-at the
boiler supply
What should new or re-tubed boilers be cleaned with? -
Answer-an alkaline detergent solution
What will excessive oxygen in the boiler water cause to
take place? - Answer-pitting of boiler metal
, 3|Page
On a pH scale what number would represent the most
acidic of a solution of feedwater? - Answer-The most
acidic would be 0
What chemical would be used to control alkalinity in a
boiler? - Answer-caustic soda
Which of the following would cause scale to form in a low
pressure boiler? - Answer-calcium and magnesium
At what pH should the boiler water in a low pressure boiler
be maintained? - Answer-pH 11
The most positive means of determining the actual water
level in a steam boiler is to: - Answer-operate the try-cocks
Of the following, the best way to determine the water level
in a steam boiler is: - Answer-by the use of the try-cocks
A common type of feedwater regulator found on low
pressure boilers is a: - Answer-pressure sensitive device
