Nyc high pressure boiler license
The minimum blowdown for a spring loaded safety valve shall be of what percent of set pressure? ANS:
10%
How is the main steam pressure gages tested? ANS: With an inspectors gage
Who is in charge of the code for any plumbing installations? ANS: The nyc plumbing code
When will anchorage or guides be inspected? ANS: Annually
How many brass washout plugs does a miniature boiler have? ANS: 3 brass washout plugs, 1" in size
How often is HP piping expansion joints inspected? ANS: Weekly
How long should a hydronic system be pressure tested for? ANS: 2 hours at no less than 100 psig
How is a gage protected from excessive pressure? ANS: Shut off cock
Who is authorized to witness a test on a gas piping system? ANS: Plumbing inspector, architect, licensed
PE, master plumber, agency by the DOB
How should a remote disconnect be labeled? ANS: Remote control for burner
When is a fusible plug not needed to be installed on a boiler? ANS: Over 200 psig
When shall a power boiler with a MAWP over 400 be tested? ANS: Pressure tested annually
,What shall a design plan of a boiler and application contain but not limited to? ANS: 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? ANS: The
welding agency and shall be available to the DOB
Who needs to furnish a control diagram and boiler operation instructions? ANS: The installer
Who will certify and calibrate all gages utilized for testing? ANS: A testing operator
What shall be placed in between different joints and piping material? ANS: An approved adapter fitting
What items are exempt from the reporting requirements? ANS: 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? ANS: An engineer supervising a
welding inspection agency acceptable to the DOB
At what pressure is it requires to have extra heavy valves installed? ANS: 100 psig
The ______ files an application for a boiler alteration? ANS: Inspector
How many safety valves does a boiler have with over 500 square feet of heating surface? ANS: 2
Gas fired boilers not exceeding 100 square feet of heating surface shall be provided with a? ANS: 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? ANS: Directly
in the steam or water space within the boiler
Who is responsible for any spatial relationship between tanks and gas services? ANS: The installer of the
last installation to correct a violation
Who is responsible for the setting of operating and safety controls? ANS: The Installing Company
With what safety fitting shall you protect high pressure steam and water boilers with? ANS: Dual low
water cut outs
Spring loaded safety valves have a total combined relieve capacity of? ANS: 100% of the max designed
capacity of the boiler
What is the total combined relieving capacity of power actuated relieving valves? ANS: 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? ANS: 2%
When a boiler is derated what changes? ANS: The MAWP decreases and the BTU output
In hydronic piping systems where shall a shutoff valve be installed? ANS: Before and after the Pressure
Reducing Valve
Hydronic piping joints between steel tubing and fittings shall be? ANS: Mechanical or Welded
, What appears on the plate of a boiler? ANS: 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? ANS: To the atmosphere
When a quick closing valve creates water hammer what is installed on the line? ANS: A water hammer
adapter is installed
Safety valve capacity may be checked in what 3 ways? ANS: Accumulation test, evaporative capacity of
feed water and amount of fuel burned
Records of inspects are kept where? ANS: 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. ANS: Ball or slip joint
Internal high pressure inspection requires the boiler to be ____, ___, ___, and ___. ANS: Shutdown,
drained, removal of hand and man holes
The outlet of the blowoff tank is what size? ANS: 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? ANS: 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 ANS:
16 ID, 5 ft gross volume, 20 ft heating surface and 100 mawp
The minimum blowdown for a spring loaded safety valve shall be of what percent of set pressure? ANS:
10%
How is the main steam pressure gages tested? ANS: With an inspectors gage
Who is in charge of the code for any plumbing installations? ANS: The nyc plumbing code
When will anchorage or guides be inspected? ANS: Annually
How many brass washout plugs does a miniature boiler have? ANS: 3 brass washout plugs, 1" in size
How often is HP piping expansion joints inspected? ANS: Weekly
How long should a hydronic system be pressure tested for? ANS: 2 hours at no less than 100 psig
How is a gage protected from excessive pressure? ANS: Shut off cock
Who is authorized to witness a test on a gas piping system? ANS: Plumbing inspector, architect, licensed
PE, master plumber, agency by the DOB
How should a remote disconnect be labeled? ANS: Remote control for burner
When is a fusible plug not needed to be installed on a boiler? ANS: Over 200 psig
When shall a power boiler with a MAWP over 400 be tested? ANS: Pressure tested annually
,What shall a design plan of a boiler and application contain but not limited to? ANS: 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? ANS: The
welding agency and shall be available to the DOB
Who needs to furnish a control diagram and boiler operation instructions? ANS: The installer
Who will certify and calibrate all gages utilized for testing? ANS: A testing operator
What shall be placed in between different joints and piping material? ANS: An approved adapter fitting
What items are exempt from the reporting requirements? ANS: 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? ANS: An engineer supervising a
welding inspection agency acceptable to the DOB
At what pressure is it requires to have extra heavy valves installed? ANS: 100 psig
The ______ files an application for a boiler alteration? ANS: Inspector
How many safety valves does a boiler have with over 500 square feet of heating surface? ANS: 2
Gas fired boilers not exceeding 100 square feet of heating surface shall be provided with a? ANS: 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? ANS: Directly
in the steam or water space within the boiler
Who is responsible for any spatial relationship between tanks and gas services? ANS: The installer of the
last installation to correct a violation
Who is responsible for the setting of operating and safety controls? ANS: The Installing Company
With what safety fitting shall you protect high pressure steam and water boilers with? ANS: Dual low
water cut outs
Spring loaded safety valves have a total combined relieve capacity of? ANS: 100% of the max designed
capacity of the boiler
What is the total combined relieving capacity of power actuated relieving valves? ANS: 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? ANS: 2%
When a boiler is derated what changes? ANS: The MAWP decreases and the BTU output
In hydronic piping systems where shall a shutoff valve be installed? ANS: Before and after the Pressure
Reducing Valve
Hydronic piping joints between steel tubing and fittings shall be? ANS: Mechanical or Welded
, What appears on the plate of a boiler? ANS: 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? ANS: To the atmosphere
When a quick closing valve creates water hammer what is installed on the line? ANS: A water hammer
adapter is installed
Safety valve capacity may be checked in what 3 ways? ANS: Accumulation test, evaporative capacity of
feed water and amount of fuel burned
Records of inspects are kept where? ANS: 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. ANS: Ball or slip joint
Internal high pressure inspection requires the boiler to be ____, ___, ___, and ___. ANS: Shutdown,
drained, removal of hand and man holes
The outlet of the blowoff tank is what size? ANS: 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? ANS: 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 ANS:
16 ID, 5 ft gross volume, 20 ft heating surface and 100 mawp
