Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Low pressure boiler
| Question | Answer |
|---|---|
| How many days in advance can you renew your licence? | 60 |
| What is the maximum fine for any infraction? | $5000.00 |
| The expansion tank in a hot water system allows for the expansion of: | Water |
| As the water in a hot water system expands: | The pressure remains constant |
| The on-off controls of a steam boiler are installed: | In a vertical position |
| Boiler fittings are important for: | Safety only |
| True or false: Thermostatic traps remove air and cool condensate | True |
| What happens when you have a closed oil vent? | Oil spill |
| Where is the jurisdiction (registration) # on a boiler? | On the front of the boiler |
| The low water fuel cut-off should be blown down: | Daily |
| A low water fuel cutoff: | Shuts off the fuel supply |
| What chemical prevents pitting? | Sodium sulfate |
| Safety valves should be tested: | Once a month |
| What is the most important fitting on a boiler? | Safety valve |
| The main purpose of testing a safety valve is to: | Make sure it operates freely |
| When testing a safety valve by hand, you must: | Have at least 75% of popping pressure |
| What is the purpose of an expansion tank? | Allows the expansion of water |
| What type of boiler is a HRT boiler? | Fire tube |
| What is the first thing you check when entering a boiler room? | The water level |
| What # oil needs to be preheated with what piece of equipment? | #6 oil with an oil heater |
| What type of test is a hardness test? | A titration test |
| A steam gauge is calibrated in: | Pounds per square inch |
| What code is a heating boiler built to? | ASME Section IV |
| What letter stamp represents a low-pressure boiler? | H |
| What is the minimum fine for not properly posting a licence? | $500.00 |
| Where would you place a water temperature indicator? | At the boiler supply |
| True or false: A chief engineer is not needed in order a low pressure plant | True |
| What prevents a furnace explosion? | The purge cycle |
| Ignition failure would cause activation of the: | Purge cycle |
| What is the maximum horsepower a low pressure licensed operator can operate to? | No limit |
| The pressuretrol: | Turns the burner on and off |
| What test is performed on re-tubed (repaired) boiler and what is the temp.? | Hydrostatic test at 75°F |
| Under what ASME Section is the care and operation of heating boilers? | Section VI |
| Boiler water should have a a pH of: | 11 |
| What is the maximum size blowdown line? | 2 1/2 inches |
| When do you close a boiler vent? | When steam comes out |
| Combustion air is controlled by: | Inlet dampers, fan intake vanes and fan speed |
| How are the sections of a cast iron boiler put together? | Push nipples and bolts |
| An aquastate is sensitive to changes in: | Water temperature |
| Who can adjust a safety valve? | Manufacturer representative |
| How many pounds of steam per hour in one boiler horsepower? | 34.5 pounds per hour |
| How much horsepower do you need to obtain a black seal (low or high pressure) license? | Over 100 horsepower |
| What does PSIA stand for? | Psif + atmospheric pressure |
| Water column & gauge should be blown down: | Daily |
| What oil has to be heated? | #6 |
| Natural water may contain: | Solids and other pollutants |
| What is the purpose of a check valve? | Prevents reverse flow & allows flow in one direction |
| A solenoid valve: | Is an automatic gas shutoff valve |
| Where does fuel atomize? | At the burner tip |
| Vacuum gauges are are calibrated in inches of: | Mercury below |
| What is the most important rule in operating boilers? | Keep water are proper level |
| What is the capacity of a safety valve measured in? | Pounds of steam per hour (# steam/hr.) |
| What protects sewer lines from high temperatures and pressures from blowdowns? | Blowdown tank |
| Carryover can lead to: | Water hammer |
| If water leaves the boiler at 170°, what temperature does it return at? | 150° |
| If a license is expired, how long can it be expired before it is null and void? | 3 years |
| Where are the combustion gases on a serpentine boiler? | Below the tubes |
| The positioning control cannot function without: | Air |
| What fire tube boiler is most efficient? | 4 pass |
| A rotary cup burner atomizes fuel: | By means of a spinning cup/high velocity air |
| Retubed or new boiler Re cleaned with: | Alkaline detergent |
| True or false: An OS&Y valve offers the least resistance to flow | True |
| True or false: a welded repair is allowed on the pressure retaining area of a boiler or pressure vessel. | True |
| When connecting a bourbon tube steam gauge to a boiler, a pigtail is used to: | Protect bourbon tube from steam |
| What happens if a steam trap continuously blows through? | Steam vents from condensate tank |
| The most common type of pressure control device used is the: | Mercury tube |
| Heavy soot on the fireside of tubes: | Should be removed for better heat transfer |
| Natural draft is produced by: | Difference in temperature outside chimney from inside chimney. |
| If a draft fan is located between the boiler and chimney, what type of draft system is it? | Induced draft |
| Smoke indicators are important because: | Operator cannot view smoking conditions |
| What is the most positive way of checking the water level in a boiler? | Try cocks |
| What is the most common cause of cast iron boiler failure? | Cracking |
| What is the most common cause of problems in a hot water system? | Air |
| If a baffle breaks, what happens? | Increase of furnace gases and stack temperature |
| When would a high suctii j line be used in a fuel tank? | When there is sludge or water in the tank |
| A vapors tattoo is sensitive to: | Gas pressure |
| When the vaporstat starts operating, it activates the: | Fuel line solenoid valve |
| What is the minimum temperature of a how water boiler operation to prevent condensation? | 170°F |
| True or false: The amount of draft is not affected by the height of the stack. | False |
| A modulating pressuretrol controls: | The boiler's high and low fire |
| A modulating pressure control is sensitive to: | Pressure |
| The basic function of snow automatic feedwater regulator on a boiler is to: | Maintain proper water level |
| A boiler with water surrounding the outside of the tubes is called a ________ boiler. | Fire tube |
| Who is authorized to re-adjust the setting of a safety valve on a pressure vessel? | Authorized manufacturer's rep. |
| Cracking of the boiler metal along the seams can be caused by: | Caustic embrittlement |
| On a gas fired boiler, how would you test the operation of the fire eye? | By shutting off the gas supply |
| Where are the combustible gases located in a water tube boiler? | Flowing around the tubes |
| What is considered the most important fitting on a boiler? | The safety valve |
| When performing a hydrostatic test, the pressure on the boiler should not exceed: | 2.5 times the safety valve setting |
| A boiler operator log must be maintained in a boiler room containing over: | 100 horsepower |
| If the fire-eye or flame scanner shuts off because the main flame fails, what device does it secure? | Fuel solenoid valve |
| The air to gas ratio is maintained by a? | Modulating motor and linkage, air damper, & butterfly valve. |
| A draft fan located between the boiler and chimney is what type of draft? | Induced |
| Boiler water having high alkalinity will develop: | Caustic embrittlement |
| The most accurate means of deciding the frequency of blowdown of a boiler is determined by a _______? | Boiler operator |
| What device is used to obtain sufficient static head for the returning condensate in a two pipe gravity return system? | Return trap |
| In a hot water heating boiler, the maximum water temperature the boiler can be, in order to qualify in NJ as low pressure, is: | 250°F |
| A vaporstat proves: | Gas pressure |
| The purge cycle on a boiler is designed to perform what function? | Remove combustible gases |
| The type of valve located between the boiler and the safety valve must be a: | No valve |
| A common type of feedwater regulator is a: | Pressure sensitive device |
| When open, an OS&Y valve offers _______ to the flow of steam. | No resistance |
| What section of the ASME code do hot water heating boilers fall under? | Section IV |
| Which describes the combustion chamber of a serpentine tube heating boiler? | Located below the tubes |
| What should you do if you walked into a boiler room and the safety valves were popped and the boiler pressure is above its MAWP (maximum allowable working pressure)? | Secure the fire at the burner |
| What letter stamp do hot water heating boilers fall under? | H |
| In NJ, how often should boilers over 100 horsepower be inspected internally and externally? | Annually |
| A manometer is calibrated in what units of measurement? | Inches of water |
| Bottom blowdown is the best performed when a boiler is ______. | Under light load |
| What is the main purpose of a check valve on the boiler feedwater line? | Allow flow in one direction only |
| The main function of a water column on a steam pressure boiler is to: | Slow down movement of water to get accurate reading of water levels |
| A steam pressure gauge is designed to show steam calibrated in: | Pounds per square inch |
| The primary function of the MBCS (micro burner combustion system) is: | Combustion safety |
| What is the purpose of an aquastat? | Controls water temperature |
| What is the name of the device used to keep live steam from getting into a pressure gauge? | Siphon loop |
| What is the minimum temperature at which a hot water heating boiler should be operated at to prevent flue gas condensation? | 170°F |
| The vaporstat should be electrically interlocked with the: | Fuel solenoid valve |
| What is the name of the science that is used for heating while used water as a conveying medium? | Hydronics |
| Automatic feedwater regulators are blown down how often? | Daily |
| A safety valve on a low pressure hot water boiler will have a maximum setting of: | 160 psig |
| Hard water contains ________. | Scale-forming salts |
| According to NJ Mechanical Inspection Bureau rules, the boiler jurisdiction (registration) number must be placed on the ______ of each boiler? | Front |
| On a low pressure boiler, after start-up, when do you close the vent valve? | When steam comes out |
| How are cast iron sectional boilers put together? | With push nipples and bolts |
| What is the maximum horsepower a NJ low pressure licensed operator can operate up to? | No limit |
| New or re-tubed boilers should be cleaned with: | An alkaline solution |
| In the state of NJ, safety valves on low and high pressure boilers should be tested how often? | Monthly |
| One boiler horsepower, according to NJ Mechanical Inspection Bureau, equals: | 34.5 lbs. steam per hour @ 212°F |
| When starting a shift, the first thing a boiler operator should check is: | The water level of all boilers |
| In the event of a flame failure, the programmer will _______. | Secure the fuel, purge the firebox, and then shut down |
| How often would you blow down a boiler with no chemical water analysis? | Once every 24 hours |
| Absolute pressure is equal to ______. | Gauge pressure + atmospheric pressure |
| Heavy accumulations of soot on heating surface can lead to: | Decrease in boiler capacity |
| Where should the boiler registration number be located? | On the front of the boiler |
| The ______ regulates the high and low fire of the burner? | Modulating pressure control |
| The water column and gauge glass should usually be blown down ________. | Daily |
| Pressure gauges are calibrated in pounds per ______. | Square inch |
| The primary function of a low water fuel cutoff is to _______. | Shuts down burner if the water level drops |
| A low water fuel cutoff should be tested _______. | Daily |
| Which of these similar size valves requires the most manual valve stem rotation to move from fully opened to fully closed? (Each has non-rising stem) | Gate |
| Combination forced and induced draft is also known as _______ draft. | Balanced |
| Draft in a boiler is measured in _______. | Inches of water |
| What is an acceptable pH level in boiler water? | 11 |
| _______ can lead to water hammer. | Carryover |
| Oxygen in boiler water causes ______. | Pitting |
| A boiler that is priming has ______. | Water carried over with the steam |
| The first thing a boiler operator should do when taking over a shift is _______. | Check the boiler water level |
| Preparation for a boiler inspection requires having the boiler _______. | Cooled, opened and thoroughly cleaned |
| Cast iron sectional boilers are built for what type of draft firing? | Mechanical forced and/or induced |
| A furnace explosion can be prevented by _______. | Purging after ignition failure |
| If in good standing, an expired license can be renewed (with a fine) within: | 3 years |
| As solids and alkalinity in boiler water increase: | Waterside scaling is increased |
| What is the most readily discernible indication of firing with insufficient secondary air? | Black smoke coming from the stack |
| How do you clean new or re-tubed boilers? | With an alkaline detergent solution |
| What is the maximum size of the bottom blowdown line and surface blowdown line? | 2.5" |
| To avoid the danger of a furnace explosion during start-up, the firing sequence allows for: | A pre-purge period |
| Which of the following would cause scale in a boiler? | Caustic soda and soot build-up |
| What is the pressure called in an idle boiler? | Static pressure |
| What is the basic function of an automatic feedwater regulator? | Maintain boiler water at proper level |
| What happens if a steam trap continuously blows through? | Steam will vent from condensate tank |
| A boiler operator's log must be maintained in all plants with over: | 100 horsepower |
| True or false: In a plant which has 100 HP total capacity, a licensed operator is not needed. | True |
| What is the heat content of one therm of natural gas? | 100,000 Btu's |
| Carryover could be dangerous and cause: | Water hammer |
| What is the most common cause of problems in hot water systems? | Air |
| If your boiler had a fire inside the furnace after the unit has shut down, what would you check? | Fuel system |
| If a boiler has been dry fired, what device did not work properly? | Low water cut-off |
| Natural water may contain: | Solids, gases & other pollutants |
| What is the difference between a safety relief and a safety valve? | The closing spring on a relief valve resides in a compressed state; the spring on the actuator in the safety valve acts in tension |
| What valve acts similar to a check valve in a hot water system? | Flow control |
| Boiler water having a high alkalinity could develop: | Caustic embrittlement |
| Draft is a difference in pressure that causes: | Air or gases to flow |
| Where would scale form on a boiler? | Below the water line |
| How many days prior to the expiration date of your license can you send in your renewal? | 60 days |
| On cast iron hot water heating boilers, where should make-up water be added? | In return line |
| How often would you blowdown a boiler with no water analysis? | Once every 24 hours |
| The maximum temperature and pressure allowed on low pressure heating boilers is: | 250°F at 160 psi |
| What is the applied science for hot water boiler systems? | Hydronics |
| What is the main purpose of establishing plant safety rules? | To protect employees and equipment |
| The water temperature setting on a hot water boiler should be no less than ________ to prevent flue gas condensation. | 170°F |
| On a valve that had minor packing leak, an adjustment was made to the packing gland, but the operator finds the valve stuck. What may have caused this? | |
| The operator overtightened the packing, causing the stem to bind | |
| True or false: The amount of natural draft generated is not affected by the height of the stack. | False |
| Vacuum gauges are calibrated in inches of ________ atmospheric pressure. | Mercury below |
| True or false: The main function of thermostatic steam trap with a bellows is to remove air and cool condensate. | True |
| The rotary cup burner uses ________ to atomize the fuel oil. | A spinning cup and high velocity air |
| In order to verify the position of a fully open manual valve, the operator should operate the handwheel: | In the closed direction, then open the valve to the previously open position |
| Name the 4 systems to operate a steam boiler. | Steam, feedwater, fuel, draft |
| The most accurate means of deciding the frequency of blowdown of a boiler is determined by: | Boiler water analysis |
| What protects the sewer line from the high temperature pressure coming from the boiler blowdown lines? | Blowdown tanks |
| What is required for complete combustion? | Mixture, atomization, temperature, time |
| What is the maximum penalty for operating with about an expired license? | $5000.00 |
| The ASME code section for care and operation of a hot water heating boiler falls under: | Section VI |
| True or false: The stem valve is a valve with the least resistance to flow. | True |
| Fire tube and water tube boiler fittings: | Serve the same purpose |
| What protects the hot water heating system from exceeding the maximum allowable working pressure (MAWP)? | Safety relief valve |
| Saturated steam is steam at: | It's corresponding temperature and pressure |
| What is the minimum size safety valve allowed on a low pressure boiler? | 3/4 inch |
| An indication of a dirty fuel oil strainer would be: | Slight change in pressure drop |
| When the heat energy in steam is lost, what happens to it? | Turns to condensate |
| Blowing down a boiler excessively will cause a loss of: | Blowdown heat |
| What would cause scale to form in a system? | Calcium and magnesium |
| If a fuel oil tank that is being filled with fuel oil has a clogged vent line, it would result in: | Pressure buildup, causing an oil spill |
| What type of test is to measure hardness? | Titration test |
| What is the most positive way to check the water level in a boiler? | Use try cocks |
| What is the observed pressure of a non-operating boiler called? | Static pressure |
| What is the purpose of backseating a manual valve in an operating system? | To isolate pressure from packing and stuffing box to minimize leakage in packing |
| Boilers are equipped with combination gas/fuel oil burners for: | More flexible operation |
| When you have carry-over, what is occurring? | Water is carrying over to steam |
| If your license expired and you paid the penalty, how long can it be expired without applying for and retaking the exam? | Three years |
| A safety device that monitors the water level in the boiler and is electronically connected to a fuel solenoid valve is called a: | Low water cut-off |
| What device is used to obtain sufficient static head for returning condensate in a two pipe gravity return system? | A return trap |
| What is the maximum pressure allowed in low pressure steam boilers? | 15 psi |
| The safety limit control device used on fuel lines is sensitive to: | Fuel pressure |
| Mercury tube pressure control devices will be accurate when installed: | In vertical position |
| How many pounds of steam per hour at 212°F equal one horsepower? | 34.5 lbs./hr |
| What does an aquastat control? | Water temperature |
| The fire-eye (flame sensing device) or scanner is located: | On the front of the furnace |
| New or re-tubed boilers should be cleaned with: | An alkaline solution |
| When a baffle breaks in a fire tube boiler, what condition occurs? | Increase in stack temperature |
| A steam pressure gauge is designed to show steam calibrated in: | Pounds per square inch |
| If you add fuel to a fuel tank with a clogged vent, it will result in: | Pressure buildup, oil spill |
| The relieving capacity of a safety valve is measured in: | Lbs./hr. that it is discharging |
| Why have duplex strainers between the oil tank and fuel oil pump? | So strainers can be cleaned without having to secure the boiler |
| How is natural draft produced? | By the difference in temperature of the gas in the chimney to that of air ouside |
| To produce one pound for steam, it is necessary to evaporate: | One pound of water |
| What would cause the pilot gas limit on a rotary cup oil burner to come into operation? | A lack of pilot gas pressure |
| What type of boiler is an HRT (horizontal return tube) boiler? | Fire tube |
| Which describes the combustion chamber of a serpentine tube heating boiler? | Located below the tubes |
| In hot water boilers, variations in the volume of water is taken care of by the: | Expansion tank |
| The two scales on the boiler pressure control: | Set the operating steam pressure range |
| Where is the boiler vent located? | |
| On the front of the furnace |
Created by:
Brian Z. MILLER