P98 Exam Questions With 100% Correct Answers, Latest Updated 2024/2025 (GRADED A+)

P98 Exam Questions With 100% Correct Answers, Latest Updated 2024/2025 (GRADED A+) Fuel-oil is generally used in buildings in stationary equipment for two purposes - Correct Answer-fuel emergency generators or to fuel equipment used to heat the building. the person supervising the Fuel-Oil Transfer in the Building from one floor to another must hold - Correct Answer-P-98 Certificate of Fitness. Certificate of Fitness holders must maintain all qualifications and comply with all requirements applicable to such certificate holders throughout the term of their certificate. The P-98 Certificate of Fitness is premise-related. The use of the word "should" throughout these study materials generally refers to - Correct Answer-policies, procedures and/or best practices recommended by the FDNY, and may not be a codified requirement. The use of the word "shall" throughout these study materials generally refers - Correct Answer-to a requirement of the Fire Code or the FDNY. 3.1 SUPERVISION OF FUEL-OIL PIPING AND STORAGE OPERATIO - Correct AnswerA stationary fuel-oil storage tank, and related piping, that is installed on the lowest floor of a building and that transfers fuel-oil through piping to another stationary fuel-oil storage tank, or to fuel-oil burning equipment, installed above such floor, shall be under the - Correct Answer-the GENERAL SUPERVISION of a P-98 Certificate of Fitness holder The periodic inspection and testing of such tanks and piping shall be conducted under the - Correct Answer-PERSONAL SUPERVISION of such P-98 Certificate of Fitness holder. Fuel-oil storage tanks and piping systems shall be inspected at least once ----for any evidence of leaks - Correct Answer-Weekly Fuel-oil storage tanks subject to this section shall have their float switches tested at least once ---- to ensure that they are in good working order. - Correct Answer-Weekly Who is required for all existing and new buildings where fuel is being transported from the lowest levels to tanks or equipment on upper floors pursuant to the new NYC Fire Code and Mechanical Codes? - Correct Answer-The COF holder P98 Exam Questions With 100% Correct Answers, Latest Updated 2024/2025 (GRADED) The oil storage tank - Correct Answer-provides the supply of oil for combustion in the oil burner The oil storage tank is inside a ---- - Correct Answer-dike In case of a leak the ---- area will contain the oil - Correct Answer-diked In its normal condition, #2 oil fuel is - Correct Answer-thin and light and is easily pumped through the circulation system. A suction pump does what? - Correct Answer-circulates the oil throughout the system. What are present in the fuel-oil coming from the oil storage tank? - Correct Answer-Dirt and sediment The ---- removes most of these contaminants from the oil before the oil reaches the burner's strainer. - Correct Answer-oil filter The suction line has to be ---- inches from the bottom of the tank for sediments not to be absorbed - Correct Answer-6 The vacuum gauge - Correct Answer-a device that measures pressure below atmospheric pressure. Excessive vacuum readings (in the vacuum gauge) indicate that - Correct Answer-there is an obstruction in the suction line (such as dirty oil strainer). When the vacuum gauge shows obstruction in the suction line it can be stopped by closing the - Correct Answer-shut off valve Closing the shut off valve - Correct Answer-permits the operator to clean the filter/strainer or to perform other maintenance. The main fuel valve is - Correct Answer-electrically operated and will open or close the line leading to the atomizer only for oil burners. It will shut down the burner system if there is a failure of ignition or combustion. The oil return line - Correct Answer-Oil circulates through the piping system back to the storage tank through it (the oil return line) A ---- is provided for safety if the pressure becomes too great. - Correct Answer-back pressure relief valve Day tanks may be located - Correct Answer-throughout the building above the lowest floor. A ---- required for each day tank to supply each floor. - Correct Answer-separate pump In case of a leak in the piping, a ---- is provided - Correct Answer-leak collector Leak collector is stored by - Correct Answer-the storage tank The leak collector has an ---- which shows the amount of oil collected - Correct Answeroil level gauge A gauge will show - Correct Answer-ow much fuel oil is inside a main storage tank/day tank Combustion is the - Correct Answer-chemical union of the oxygen in the air with combustible elements in fuel-oil (hydrogen and carbon). The end result of combustion is - Correct Answer-heat energy Oil firing equipment - Correct Answer-is used to liberate heat energy from fuel-oil. Oil burners - Correct Answer-the principal components of the oil firing equipment and provide the means of supporting the process of combustion. Two principal elements of fuel oil - Correct Answer-Carbon and hydrogen During the combustion process the carbon content of fuel oil unites w/ oxygen in the air and forms - Correct Answer-carbon dioxide and carbon monoxide The hydrogen content of the oil unites with the oxygen and produces ---- during combustion - Correct Answer-water The objective of complete combustion is met when - Correct Answer-fuel oil combines with the greatest possible amount of oxygen. Carbon % of fuel oil - Correct Answer-85 Hydrogen content of oil - Correct Answer-about 14 Fuel oil must be changed to -------- in order to support combustion. - Correct Answer-a gas or vapor and mixed with air An oil burner is primarily a - Correct Answer-device for processing the liquid fuel for combustion by accelerating the change from liquid to a vapor that can be mixed with air and burned. This process of breaking down or atomizing the oil is necessary to ensure ------- and ---- --- - Correct Answer-prompt ignition and rapid combustion Although there are various types of oil burners, i.e. generator or boiler, they all - Correct Answer-vaporize or atomize the oil before it enters the combustion chamber where it is mixed with air in predetermined proportions. An oil burner uses an oil pump and mixes air and oil within - Correct Answer-the nozzle itself In oil burners, the oil and air mixture is delivered to the nozzle at a pressure dependent upon the - Correct Answer-make of the burner The air that contacts the oil prior to its leaving the nozzle is referred to as - Correct Answer-primary air The introduction of air from the blower or fan into the combustion chamber after the oil has left the nozzle is referred to as - Correct Answer-secondary air Every brand of oil burner is essentially - Correct Answer-different from that of other manufacturers ----generators use injection nozzles without primary air, thus it is important that an operator of a system understand the functions of his/her particular system completely. - Correct Answer-Diesel Oil burners require approximately ---- cubic feet of air per gallon of oil consumed. - Correct Answer-2000 The mixture of oil and air is sprayed in vapor form into a ------ where combustion takes place - Correct Answer-Firebox aka combustion chamber The mixture of air and fuel in the burner must be strictly controlled; otherwise it could become an - Correct Answer-explosive mixture During the process of combustion, --- part of ----unites with --- parts of ---- to produce carbon dioxide (CO2). - Correct Answer-1/carbon 2/oxygen Each time 1 pound of carbon is burned --- BTU of heat are liberate - Correct Answer14,544 ----is recognized as the end product of complete combustion - Correct Answer-Carbon dioxide Should fuel be supplied without the proper amount of ----, carbon dioxide and soot will be produced. - Correct Answer-oxygen Incomplete combustion is produced at ---- BTU at hear heat liberate - Correct Answer4,480 ---- is considered as the end product of incomplete combustion. - Correct AnswerCarbon monoxide In addition to being inefficient in the production of heat, the presence of carbon monoxide is - Correct Answer-highly dangerous If the proper amount of air has been thoroughly mixed with the oil, and the temperature of the flame is correct, the - Correct Answer-free carbon burns completely A correctly adjusted oil burner flame will have an: ---- flame w/ small ---- tips. The tips will be ----- - Correct Answer-Orange/Red/Slightly Cloudy An insufficient air supply is one cause of - Correct Answer-black smoke and soot An excessive air supply can - Correct Answer-put out the flame A red, smoky flame is an indication of - Correct Answer-a lack of air. An insufficient air supply is one cause of - Correct Answer-dense, black smoke and soot an excessive air supply can - Correct Answer-put out the flame The oil spray entering a combustion chamber burns in - Correct Answer-suspension f any part of the spray mixture contacts the walls of a combustion chamber, it will cause - Correct Answer-a smokey fire Over a period of time----- in the combustion chamber and cause a burner failure. - Correct Answer-carbon deposits may build up ----makes up the walls of a combustion chamber - Correct Answer-Insulated fire brick Insulated firebrick is lightweight firebrick that becomes ------after the burner starts - Correct Answer-cherry red 15 seconds The -----in a combustion chamber should be closed to the flame and the oil should be burned by the ----- - Correct Answer-refractory material/reflected heat Reflected heat, which increases combustion efficiency, is - Correct Answer-heat that is reflected back into the combustion chamber and maintains the fire after the ignition is turned off. Diesel generators operate differently. They have an -------engine - Correct Answerinternal combustion (W/ diesel)Air is compressed by a ---- and diesel fuel is injected into the ---- The mixture ignites and turns the engine. - Correct Answer-piston/cylinder Insufficient compression air or a clogged ignition nozzle will result in these 3 things - Correct Answer-incomplete combustion/black smoke and excessive vibration of the engine. Diesel generators should be tested - Correct Answer-at minimum monthly Generators are used as - Correct Answer-emergency power supply if the grid fails Small portable diesel generators range from (kVA) - Correct Answer-1k VA - 10k VA Large Diesel generators range from (kVa) - Correct Answer-8kVA - 2000k VA Large diesel generators are for - Correct Answer-large office complexes, factories and power stations Diesel generators also provide - Correct Answer-back up power to utility grids. Power failures are particularly critical for - Correct Answer-hospitals and large offices. Computer service centers have emergency power generators are typically powered by - --- and configured to start ---- - Correct Answer-diesel fuel/start automatically, as soon as a power failure occurs Power generators are selected based on the - Correct Answer-load they are intended to supply. Ideally diesel engines should run at least around ---- of their maximum rated load, and at around ---- of their maximum speed - Correct Answer-60-75%/75% Diesel engines must test run every----avoid damage under certain conditions that occur when an engine is left idling as a 'standby' generating unit ready to run up when needed. - Correct Answer-month Fuel oil grades - Correct Answer-1 fuel-oil, to diesel oil or no. 2 fueloil; to the heavier no. 4, no. 5, and no. 6 fuel-oils. Strainers and or filter are required in the oil line to separate - Correct Answer-dirt and sediment The grade of fuel-oil used in a burner shall be that for which the burner is approved and as stipulated by the - Correct Answer-burner manufacturer Oil containing --- shall not be used - Correct Answer-gasoline Waste crankcase oil shall not be used, except when such waste oil is mixed with number------fuel oil or---- - Correct Answer-6/waste recovery plants The resultant mixture meets the minimum specifications for number six fuel-oil set forth in the ----, and the use of such waste oil complies with all laws, rules and regulations relating to smoke and other emissions and is approved by the---- - Correct Answer-NYC Building Code---the NYC Department of Environmental Protection. Approval from the --- and ----is required before changing any grade of fuel-oil. - Correct Answer-NYC Department of Buildings/FDNY The following information describes the various controls and devices of an oil burner system. - Correct Answer1. As described earlier, the fuel-oil is stored in the oil ---- - Correct Answer-storage tank 2. The tank shut-off valve permits the operator to stop - Correct Answer-the flow of oil to clean the strainer and to perform other maintenance 3. An oil filter/strainer - Correct Answer-separates dirt and sediment from the fuel-oil coming from the storage tank. 4. A vacuum gauge is used to indicate to the operator whether - Correct Answer-there is an obstruction in the suction line (e.g., the oil filter/strainer is dirty and requires cleaning). 5. The main fuel valve is an electrically operated valve that will open or close the line leading to - Correct Answer-the atomizer of the oil burner. An oil burner is activated by the primary control. The burner shut-off valve is located as close as possible to the burner to reduce the amount of oil remaining in the burner line after an emergency shutdown. 6. The mixture of fuel-oil and air is ignited at first by -----. After ignition, combustion is maintained by retained heat in the --- - Correct Answer-electric ignition/combustion chamber 7. A photoelectric cell is - Correct Answer-is a device that will shut down an oil burner if a flame is not visible to the scanner or photoelectric cell. A dangerous condition will arise if oil is pumped into the combustion chamber, but not burned. Atomized, unburned fuel could cause an explosion if a spark or other source of ignition occurs. 8. An aquastat operates the - Correct Answer-oil burner in the summer for domestic hot water needs. 9. The low water cut-off is an - Correct Answer-automatic electric control that will shut the burner off when the water level is below a safe operating point. A shortage of water in the steam boiler could lead to a dangerous condition. 10. Gauge glass is a device used to indicate - Correct Answer-the water level of a steam boiler. It is the most important control on the steam boiler Gauge glass should have water visible when the boiler is in operation. 11. A primary relay control is the main - Correct Answer-combustion controller primary relay control will----when no flame is detected. A spark could cause an explosion in the combustion chamber. - Correct Answer-shut down 12. A smoke alarm is a device mounted on the----only if the maximum fire rate is---- - Correct Answer-stack or chimney/20 gallons per hour or over A smoke alarm will -----nd put on an alarm if there is excessive smoke or if the fire is improper. - Correct Answer-shut down the burner A dangerous condition would exist if all the oil was not being----.If the condition is not corrected, an explosion may occur. - Correct Answer-burned or properly atomized, or too much oil was admitted to the combustion chamber The smoke alarm is also a required - Correct Answer-combustion and air pollution control. 13. A steam pressure gauge shows the - Correct Answer-steam pressure inside the steam boiler. The pressure gauge reads in - Correct Answer-psi (pounds per square inch). The pressure gauge is located - Correct Answer-on or near the top of the steam boiler. Normal steam pressure for low pressure boilers does not exceed - Correct Answer-15 psi If the indicated stream pressure is significantly greater than the normal pressure, the best action is to - Correct Answer-shut down the system and call 911 since this is a serious problem.) 14. The safety or pop-off valve is a device used to - Correct Answer-relieve excessive steam pressure. It is located on or near the top of a steam boiler 15. Glazing occurs because of - Correct Answer-low combustion temperatures and pressures in the engine cylinder. Effects of Improper Burner System - Correct AnswerEffects of Improper Burner System - Correct AnswerA defective oil cut-off valve can lead to - Correct Answer-after-drip After drip - Correct Answer-The oil drips into the combustion chamber when the burner is off. The excessive oil is absorbed by the combustion chamber floor and walls. This causes the burner to be unusually noisy when it starts up or shuts down. It will eventually lead to a carbon deposit build-up and to a less efficient operation of the burner. After drip danger - Correct Answer-may lead to fire on the floor in front of the heating unit. A leaking seal on an oil pump shaft bearing may also cause - Correct Answer-oil to leak on the floor in front of the heating unit. The leaked oil may lead to fire on the floor in front of the heating unit.