NJ Black Seal Low Pressure, 1 of 3 Exam Questions
and Answers
The basic function of an automatic feedwater regulator on a boiler is to: - -maintain proper
water level
-If a one square inch column of water is one foot tall, how much does it weigh? - -.433 lbs
-Where is the flame sensing device located on a boiler? - -front
-Cracking of the boiler metal can be caused by: - -caustic embrittlement
-How would you test the operation of the flame failure device? - -by shutting off the fuel
supply valve
-Where are the combustible gases located in a water tube boiler? - -flowing around the
tubes
-What are you preventing by increasing the pressure within a cold boiler gradually? - -
thermal shock
-When performing a hydrostatic test, the pressure on the boiler should not exceed: - -10
psi above 1.5 times the MAWP
-A boiler operator log must be maintained in a boiler room containing over: - -100
horsepower
-If a flame sensing device notices that there is a flame failure, what device does it secure? -
-fuel solenoid valve
-What type of draft has a fan between the boiler and the chimney? - -induced
-What is used to control alkalinity? - -caustic soda
-What is the best way to decide the blowdown frequency for a boiler? - -boiler water
analysis
-What device is used to obtain sufficient static head for the returning condensate in a two-
pipe gravity return system? - -return trap
-What is the maximum temperature a hot water boiler can be to qualify in New Jersey as
low pressure? - -250 degrees
-What type of boiler is an HRT (horizontal return tube)? - -fire-tube
and Answers
The basic function of an automatic feedwater regulator on a boiler is to: - -maintain proper
water level
-If a one square inch column of water is one foot tall, how much does it weigh? - -.433 lbs
-Where is the flame sensing device located on a boiler? - -front
-Cracking of the boiler metal can be caused by: - -caustic embrittlement
-How would you test the operation of the flame failure device? - -by shutting off the fuel
supply valve
-Where are the combustible gases located in a water tube boiler? - -flowing around the
tubes
-What are you preventing by increasing the pressure within a cold boiler gradually? - -
thermal shock
-When performing a hydrostatic test, the pressure on the boiler should not exceed: - -10
psi above 1.5 times the MAWP
-A boiler operator log must be maintained in a boiler room containing over: - -100
horsepower
-If a flame sensing device notices that there is a flame failure, what device does it secure? -
-fuel solenoid valve
-What type of draft has a fan between the boiler and the chimney? - -induced
-What is used to control alkalinity? - -caustic soda
-What is the best way to decide the blowdown frequency for a boiler? - -boiler water
analysis
-What device is used to obtain sufficient static head for the returning condensate in a two-
pipe gravity return system? - -return trap
-What is the maximum temperature a hot water boiler can be to qualify in New Jersey as
low pressure? - -250 degrees
-What type of boiler is an HRT (horizontal return tube)? - -fire-tube
