boiler license EXAM TEST WITH LATEST
UPDATED (QUESTIONS AND ANSWERS)
already passed!!
The minimum blowdown for a spring loaded safety valve shall be of what percent of set pressure?
10%
How are the main steam pressure gauges tested?
With an inspectors gage
Who is in charge of the code for any plumbing installations?
The nyc plumbing code
When will anchorage or guides be inspected?
Annually
How many brass washout plugs does a miniature boiler have?
3 brass washout plugs, 1" in size
How often are HP piping expansion joints inspected?
Weekly
How long should a hydronic system be pressure tested for?
2 hours at no less than 100 psig
How is a gauge protected from excessive pressure?
Shut off cock
Who is authorized to witness a test on a gas piping system?
Plumbing inspector, architect, licensed PE, master plumber, agency by the DOB
How should a remote disconnect be labeled?
Remote control for burner
,When is a fusible plug not needed to be installed on a boiler?
Over 200 psig
When shall a power boiler with a MAWP over 400 be tested?
Pressure tested annually
What shall a design plan of a boiler and application contain but not limited to?
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?
The welding agency and shall be available to the DOB
Who needs to furnish a control diagram and boiler operation instructions?
The installer
Who will certify and calibrate all gauges utilized for testing?
A testing operator
What shall be placed in between different joints and piping material?
An approved adapter fitting
What items are exempt from the reporting requirements?
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?
An engineer supervising a welding inspection agency acceptable to the DOB
At what pressure is it required to have extra heavy valves installed?
100 psig
The ______ files an application for a boiler alteration?
Inspector
How many safety valves does a boiler have with over 500 square feet of heating surface?
2
, Gas fired boilers not exceeding 100 square feet of heating surface shall be provided with a?
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?
Directly in the steam or water space within the boiler
Who is responsible for any spatial relationship between tanks and gas services?
The installer of the last installation to correct a violation
Who is responsible for the setting of operating and safety controls?
The Installing Company
With what safety fitting shall you protect high pressure steam and water boilers with?
Dual low water cut outs
Spring loaded safety valves have a total combined relief capacity of?
100% of the max designed capacity of the boiler
What is the total combined relieving capacity of power actuated relieving valves?
No less the 10% of the MAWP or no higher than 20% above the MAWP
What is the minimum blowdown for a spring loaded safety valve?
2%
When a boiler is derated what changes?
The MAWP decreases and the BTU output
In hydronic piping systems where shall a shutoff valve be installed?
Before and after the Pressure Reducing Valve
Hydronic piping joints between steel tubing and fittings shall be?
Mechanical or Welded
What appears on the plate of a boiler?
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?
To the atmosphere
When a quick closing valve creates a water hammer what is installed on the line?