P98 Questions and Answers (2023/2024) (Complete and Accurate)

P98 Questions and Answers (2023/2024) (Complete and Accurate) Suction pump circulates the oil throughout the system Suction line has to be 6 inches from the bottom of the tank for sediment not to be absorbed Vacuum gauge a device that measures pressure below atmospheric pressure/is used to indicate to the operator whether there is an obstruction in the suction line Excessive vacuum readings indicate that there is an obstruction in the suction line Main fuel valve is electrically operated and will open or close the line leading to the atomizer only for oil burners Carbon and hydrogen are the two principal elements of fuel oil During the combustion process, the carbon content of fuel oil is 85% The hydrogen content of the oil is 14% The air that contacts the oil prior to its leaving the nozzle is referred to as 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 secondary air Oil burners require approximately 2000 cubic feet of air per gallon of oil consumed During the process of combustion, one part of carbon unites with two parts of oxygen to produce carbon dioxide (CO2) Each time 1 pound of carbon is burned 14,544 BTU of heat are liberated A correctly adjusted oil burner flame will have an orange colored flame body with small red tips A red, smoky flame is an indication of a lack of air A white, almost dazzling flame is an indication of a great amount of excess air An insufficient air supply is one cause of dense, black smoke and soot Insulated firebrick is lightweight firebrick that becomes cherry red 15 seconds after the burner starts Diesel generators should be tested at minimum monthly Small portable diesel generators rang from 1K VA - 10K VA Large office complexes, factories, and power stations generators rang from 8K VA - 2000K VA Approval from the NYC department of buildings and FDNY is required before changing any grade of fuel oil The tank shut off valve permits the operator to stop the flow of oil to clean the strainer and to perform maintenance 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. A photoelectric cell is a flame detection control Gauge glass is a device used to indicate the water level of a steam boiler. A primary relay control is the main combustion controller A primary relay control will shut down when no flame is detected A smoke alarm is a device mounted on the smoke stack or chimney only if the maximum fire rate is 20 gallons per hour or over The pressure gauge reads in psi (pounds per square inch) Normal steam pressure for low pressure boilers does not exceed 15 psi Glazing occurs because of low combustion temperatures and pressures in the engine cylinder A defective oil cut-off valve can lead to after-drip Dirty or damaged nozzles or rotary cups can cause improper atomization Blockage in the chimney or flue passage will cause the cellar or boiler room to become filled with smoke The protective relay is supposed to shut down the oil burner if a flame is not established quickly One of the most dangerous conditions that may occur is when the oil burner becomes operational but the source of ignition fails The Mechanical Code requires that all fuel-oil piping and storage tanks be hydrostatically tested for tightness by the installing contractor before the work is closed-in and before the system is operated The piping shall be tested at 150% percent of the maximum working pressure applicable to that part of the piping system Piping from a transfer pump to a day tank is required to be enclosed in a shaft of 4-inch thick concrete or masonry with a 4-inch clearance to the fuel pipe. Such appliances must not be converted from the fuel specified on the rating plate for use with a different fuel without securing written approval from the FDNY. The tank, piping and valves for appliances burning oil must be installed in accordance with the requirements of the NYC Construction Codes Stationary tank float switches shall be tested to ensure that they are in good working order, on not less than a weekly basis Minor repairs such as replacement of the fill box or replacement of pipe cover may be repaired by COF holder after consulting with the equipment manufacturer For oil burning systems, cards giving complete instructions for the care and operation of the system shall be furnished and shall be permanently located in an easily visible and accessible location by the P-98 Certificate of Fitness holder All oil burning equipment and piping must be inspected AT LEAST ONCE A WEEK by the P-98 Certificate of Fitness holder float switch tested weekly by the P-98 Certificate of Fitness holder The fill opening must be equipped with a tight metal cover to discourage tampering, and must be routinely inspected by the P-98 Certificate of Fitness holder Fuel-oil above the lowest floor inside of a building shall be limited to 330 gallons per story A total of not more than 100,000 gallons shall be stored inside any building Fuel-oil tanks and fuel-oil burning equipment must be located in a dedicated room or enclosure having a fire resistance rating of at lease 2 hours LOW TEMPERATURE EQUIPMENT temperature of 600 deg Fahrenheit or less under normal conditions MEDIUM TEMPERATURE EQUIPMENT temperature between 600 and 1000 deg Fahrenheit under normal operating conditions HIGH TEMPERATURE EQUIPMENT temperature of 1000 deg Fahrenheit or greater under normal operating conditions When two pumps are used to form a duplex pump set, each pump is selected to provide 100% capacity so that there is complete redundancy