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Nyc high pressure boiler license Exam Questions with Correct Answers.
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Nyc high pressure boiler license ExamQuestions with Correct Answers
The minimum blowdown for a spring loaded safety valve shall be of what percent of set pressure? -
Correct Answer - 10%
How is the main steam pressure gages tested? - Correct Answer - With an inspectors gage
Who is in charge of the code for any plumbing installations? - Correct Answer - The nyc plumbing code
When will anchorage or guides be inspected? - Correct Answer - Annually
How many brass washout plugs does a miniature boiler have? - Correct Answer - 3 brass washout plugs,
1" in size
How often is HP piping expansion joints inspected? - Correct Answer - Weekly
How long should a hydronic system be pressure tested for? - Correct Answer - 2 hours at no less than
100 psig
How is a gage protected from excessive pressure? - Correct Answer - Shut off cock
Who is authorized to witness a test on a gas piping system? - Correct Answer - Plumbing inspector,
architect, licensed PE, master plumber, agency by the DOB
How should a remote disconnect be labeled? - Correct Answer - Remote control for burner
When is a fusible plug not needed to be installed on a boiler? - Correct Answer - Over 200 psig
When shall a power boiler with a MAWP over 400 be tested? - Correct Answer - Pressure tested
annually
What shall a design plan of a boiler and application contain but not limited to? - Correct Answer - Size,
location, operating pressure + temperature of the pressure vessel and type + specs of PRV
Who is responsible for maintaining the copies of the certified welder qualifications report? - Correct
Answer - The welding agency and shall be available to the DOB
,Who needs to furnish a control diagram and boiler operation instructions? - Correct Answer - The
installer
Who will certify and calibrate all gages utilized for testing? - Correct Answer - A testing operator
What shall be placed in between different joints and piping material? - Correct Answer - An approved
adapter fitting
What items are exempt from the reporting requirements? - Correct Answer - The seal welds of the
tubes and the installation of back rings to man holes and hand holes to boilers
Who will be under control for any welding done to a high pressure tank? - Correct Answer - An engineer
supervising a welding inspection agency acceptable to the DOB
At what pressure is it requires to have extra heavy valves installed? - Correct Answer - 100 psig
The ______ files an application for a boiler alteration? - Correct Answer - Inspector
How many safety valves does a boiler have with over 500 square feet of heating surface? - Correct
Answer - 2
Gas fired boilers not exceeding 100 square feet of heating surface shall be provided with a? - Correct
Answer - Single or double cone type of hood diverter in the stack
A heater for either liquid fuels or other liquids harmful to the boiler shall not be installed? - Correct
Answer - Directly in the steam or water space within the boiler
Who is responsible for any spatial relationship between tanks and gas services? - Correct Answer - The
installer of the last installation to correct a violation
Who is responsible for the setting of operating and safety controls? - Correct Answer - The Installing
Company
With what safety fitting shall you protect high pressure steam and water boilers with? - Correct Answer
- Dual low water cut outs
Spring loaded safety valves have a total combined relieve capacity of? - Correct Answer - 100% of the
max designed capacity of the boiler
What is the total combined relieving capacity of power actuated relieving valves? - Correct Answer - No
less the 10% of the MAWP or no higher then 20% above the MAWP
What is the minimum blowdown for a spring loaded safety valve? - Correct Answer - 2%
When a boiler is derated what changes? - Correct Answer - The MAWP decreases and the BTU output
In hydronic piping systems where shall a shutoff valve be installed? - Correct Answer - Before and after
the Pressure Reducing Valve
, Hydronic piping joints between steel tubing and fittings shall be? - Correct Answer - Mechanical or
Welded
What appears on the plate of a boiler? - Correct Answer - Serial #, name of manufacturer, serial # of
manufacturer, MAWP, heating surface, year built and rated steam capacity
Waste removal of a boiler shall conduct the products of combustion where? - Correct Answer - To the
atmosphere
When a quick closing valve creates water hammer what is installed on the line? - Correct Answer - A
water hammer adapter is installed
Safety valve capacity may be checked in what 3 ways? - Correct Answer - Accumulation test,
evaporative capacity of feed water and amount of fuel burned
Records of inspects are kept where? - Correct Answer - On the premises
No joint anchorages or guides shall be repaired, replaced or relocated without a work permit issued by
the department. This shall not apply to the repacking of a ___ or ___ joint. - Correct Answer - Ball or slip
joint
Internal high pressure inspection requires the boiler to be ____, ___, ___, and ___. - Correct Answer -
Shutdown, drained, removal of hand and man holes
The outlet of the blowoff tank is what size? - Correct Answer - 2 times the diameter of the blowdown
piping, 6 inches internal entering the bottom of the blow off tank
What info is not necessary to send to DOB? - Correct Answer - Use, type, size, location, operating temp
of pressure tanks, and location, type, specs of Pressure Reducing Valve
Miniature boiler specs are ____ ID, ____ft gross volume, ____ft water heating surface, ____MAWP -
Correct Answer - 16 ID, 5 ft gross volume, 20 ft heating surface and 100 mawp
Safety valve popping tolerance + capacity up to 70 psig? 71-300 psig, 301-1000 psig, >1000 - Correct
Answer - 70 = 2 psig, 71-300 = 3%, 301-1000 = 10 psig, >1000 = 1%
What are other ways of testing safety or relief valve for rated capacity? - Correct Answer - Accumulation
test, amount of fuel burned, evaporative capacity of feed water
What if someone is found not following the rules and regulations for gas piping inspections? - Correct
Answer - Revocation of license
What range of the gage shall not excess when using a magnitude of 5 psig? - Correct Answer - 10 psig
(2x operating pressure)
What can be connected to a float chamber or water column? - Correct Answer - A damper regulator, a
feed water regulator, drian, gauge
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