Exam (elaborations)
FDNY-P99 LOW PRESSURE BOILERS Q&A 2024/2025
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FDNY-P99 LOW PRESSURE BOILERS Q&A 2024/2025
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FDNY-P99 LOW PRESSURE BOILERSWhat is a general requirement of the location of the installation of a boiler? - Answers-
Adequate clearance from combustile construction
What temperature must the materials remain under during combustion? - Answers- 170
degrees
What is a requirement for the access of the boiler? - Answers- Access for operation and
maintenance must not be hazardous
What is required upon installation to operate a boiler? - Answers- Inspection and test
resulting in equipment use permit from commissioner
How often should a boiler be inspected? - Answers- Once a year
What documentation is required from a certificate holder? - Answers- Owners annual
statement
What is required to hydrostatically test upon installation and who should perform these
tests? - Answers- Liquid fuel piping and fuel oil storage tanks by the installing
contractor
At what pressure should piping be tested? - Answers- 1/2 max working pressure but
less than pressure required for storage tank
At what pressure should oil storage tanks be tested? - Answers- At 1 1/2x max working
pressure but never < 25 psi
How long should hydrostatic pressure be maintained? - Answers- Until all joints and
connections are inspected for leaks and at 30 minutes have passed
Who is responsible for testing gas distribution piping? - Answers- Installing contractor
before closing and operation
What is described on instruction cards and where are they located? - Answers- Care
and operation of oil burner located near the equipment.
What type of burners require a C of F holder to operate them? - Answers- Any boiler
that is not automatic or requires preheating.
What is the license holder responsible for after repair? - Answers- Inspecting the
repairs, and functioning of all control devices and positioning of valves.
, What type of heat and combustion equipment are required with the air pollution control
code? - Answers- All burners fire with solid, liquid, or gas. Including rubbish
burners/incinerators.
What temperature are the products of combustion upon exit in low temperature
equipment? - Answers- Less than 600 degrees
What temperature are the products of combustion upon exit in medium temperature
equipment? - Answers- 6001000
What temperature are the products of combustion upon exit in high temperature
equipment? - Answers- 1000+
How much cfm of air be capable of per gallon of oil per hour? - Answers- 36 cfm
If ventilation is supplied mechanically, what is required of the pressure? - Answers- It
must be greater than the atmospheric pressure outdoors
How are flue dampers designed? - Answers- So that they cannot completely cut off
passage of flue gasses at any time
When can tight closing dampers be installed? - Answers- When accompanied by
approved automatical draft and combustion controls.
What is the minimum flashpoint for fuel oils to mean hydrocarbon oils? - Answers- 100
degrees
What type of oils should be used in low pressure burners? - Answers- No. 1(range oil),
no. 2(diesel oil), no. 4, no. 5, no. 6
What oil is prohibited? - Answers- Crank case refuse oil
Where is the remote control located? - Answers- As close to the entrance of the boiler
room as practical or immediately inside as long as it's accessible at all times. On tank if
60 gal or less
What are the 4 safety controls implemented? - Answers- Oil temperature control,
ignition, stack/combustion control, and high pressure and temperature control.
Is a chimney required to install a burner? - Answers- Yes
What temperature is no. 6 oil heated to in the tank? - Answers- 100-130 degrees
What does excessive readings in the vacuum gauge indicate? - Answers- Obstruction
in the the suction line, strainer must be cleaned
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