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NYC High Pressure Boiler License – Qs & As
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NYC High Pressure Boiler License – Qs & As
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NYC High Pressure Boiler License – Qs & AsThe 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
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