Podcast
Questions and Answers
What is a key reason why regular checks of hot water heating boilers are important?
What is a key reason why regular checks of hot water heating boilers are important?
- Because they may not function safely and efficiently during unsupervised periods (correct)
- Because they require continuous supervision
- Because they are fully automatic and do not need monitoring
- Because they can function safely and efficiently without supervision
What is the purpose of the programmed combustion control sequence in hot water boilers?
What is the purpose of the programmed combustion control sequence in hot water boilers?
- To monitor pump operation and make-up water supply
- To start the boiler when there is a call for heat
- To shut down the boiler when an unsafe firing condition exists
- To maintain safe and efficient burner operation (correct)
What is the ideal color of the burner flame when burning natural gas?
What is the ideal color of the burner flame when burning natural gas?
- Predominantly green
- Predominantly blue (correct)
- Predominantly yellow
- Predominantly red
What is included in routine boiler checks?
What is included in routine boiler checks?
What happens when the heating conditions are satisfied in a hot water boiler?
What happens when the heating conditions are satisfied in a hot water boiler?
Why do hot water boilers need regular attention despite having automatic systems?
Why do hot water boilers need regular attention despite having automatic systems?
What is the ideal color of a light fuel oil flame?
What is the ideal color of a light fuel oil flame?
What is the purpose of checking the flue gas temperature regularly?
What is the purpose of checking the flue gas temperature regularly?
What is the result of a gradual increase in flue gas temperature?
What is the result of a gradual increase in flue gas temperature?
What is the consequence of excessive soot in the furnace?
What is the consequence of excessive soot in the furnace?
What is the cause of high flue gas temperature when excess air is present?
What is the cause of high flue gas temperature when excess air is present?
What is the recommended hot water supply set point for non-condensing boilers?
What is the recommended hot water supply set point for non-condensing boilers?
What is the maximum operating temperature for hot water heating boilers?
What is the maximum operating temperature for hot water heating boilers?
What is the purpose of checking the combustion air intake?
What is the purpose of checking the combustion air intake?
What is the result of a dirty burner nozzle in oil firing?
What is the result of a dirty burner nozzle in oil firing?
Who should be hired to perform combustion analysis and adjust the air-fuel ratio?
Who should be hired to perform combustion analysis and adjust the air-fuel ratio?
What is the minimum differential pressure required between the safety relief valve set pressure and the boiler operating pressure according to ASME VI?
What is the minimum differential pressure required between the safety relief valve set pressure and the boiler operating pressure according to ASME VI?
What happens when the safety relief valve is not able to open at its set pressure?
What happens when the safety relief valve is not able to open at its set pressure?
Why is it important to regularly check that the heating system is completely filled with water?
Why is it important to regularly check that the heating system is completely filled with water?
What is a common cause of water loss from a hot water heating system?
What is a common cause of water loss from a hot water heating system?
What is the purpose of installing a water meter in the make-up line?
What is the purpose of installing a water meter in the make-up line?
What happens when an expansion tank is full and the boiler fires?
What happens when an expansion tank is full and the boiler fires?
What is the purpose of checking the air charge in a bladder-style expansion tank?
What is the purpose of checking the air charge in a bladder-style expansion tank?
What is the consequence of a full expansion tank if left unaddressed?
What is the consequence of a full expansion tank if left unaddressed?
Why is it important to ensure the safety relief valve stays tightly closed unless required to open?
Why is it important to ensure the safety relief valve stays tightly closed unless required to open?
What is the purpose of an automatic feed valve in a hot water heating system?
What is the purpose of an automatic feed valve in a hot water heating system?
What is a sign of a damaged tank bladder?
What is a sign of a damaged tank bladder?
What should be done after replacing a bladder or re-coring a Schrader valve?
What should be done after replacing a bladder or re-coring a Schrader valve?
Why is it important to determine and repair the cause of an air leak in a conventional air cushion expansion tank?
Why is it important to determine and repair the cause of an air leak in a conventional air cushion expansion tank?
What is often used to test the water in closed hot water heating systems?
What is often used to test the water in closed hot water heating systems?
What is the purpose of restricting blowoff and blowdown in hot water heating boilers?
What is the purpose of restricting blowoff and blowdown in hot water heating boilers?
What is a necessary step in restoring an expansion tank to service?
What is a necessary step in restoring an expansion tank to service?
What is a common source of air leaks in conventional air cushion expansion tanks?
What is a common source of air leaks in conventional air cushion expansion tanks?
What is the purpose of a low water fuel cut-off (LWCO) in steam boilers?
What is the purpose of a low water fuel cut-off (LWCO) in steam boilers?
How often are some closed hot water heating systems tested?
How often are some closed hot water heating systems tested?
Why do larger capacity steam boilers require continuous supervision?
Why do larger capacity steam boilers require continuous supervision?
What is the primary purpose of the daily checks performed by boiler operators?
What is the primary purpose of the daily checks performed by boiler operators?
What is the correct procedure when taking over from the automatic control system?
What is the correct procedure when taking over from the automatic control system?
Why should the boiler pressure not be greater than the operating control cut-out set point?
Why should the boiler pressure not be greater than the operating control cut-out set point?
What is the recommended pressure differential between the safety valve set pressure and the boiler operating pressure control?
What is the recommended pressure differential between the safety valve set pressure and the boiler operating pressure control?
What is the primary indicator of boiler water level?
What is the primary indicator of boiler water level?
What is the purpose of the continuous blowdown (CBD) adjustment?
What is the purpose of the continuous blowdown (CBD) adjustment?
What is the recommended maximum boiler operating pressure for a hot water heating boiler with a safety relief valve set to 207 kPa?
What is the recommended maximum boiler operating pressure for a hot water heating boiler with a safety relief valve set to 207 kPa?
Why is it important to not rely entirely on water level controls, emergency water feeders, or automatic alarms?
Why is it important to not rely entirely on water level controls, emergency water feeders, or automatic alarms?
What is the purpose of the log book entry in the operator's duties?
What is the purpose of the log book entry in the operator's duties?
What is the recommended maximum boiler operating pressure for a steam power boiler with a safety valve set point of 1725 kPa?
What is the recommended maximum boiler operating pressure for a steam power boiler with a safety valve set point of 1725 kPa?
Where does precipitated sediment typically accumulate?
Where does precipitated sediment typically accumulate?
Why should the gauge glass and water column be blown through regularly?
Why should the gauge glass and water column be blown through regularly?
What is a common indicator of condensate system corrosiveness?
What is a common indicator of condensate system corrosiveness?
What is a possible cause of foaming or priming in a boiler?
What is a possible cause of foaming or priming in a boiler?
How can mild cases of foaming be controlled?
How can mild cases of foaming be controlled?
What should be done regularly to ensure the most efficient heat transfer?
What should be done regularly to ensure the most efficient heat transfer?
What is the recommended boiler load when operating soot blowers?
What is the recommended boiler load when operating soot blowers?
What is the purpose of monitoring the flue gas temperature?
What is the purpose of monitoring the flue gas temperature?
What is the purpose of regular testing of low water fuel cut-offs?
What is the purpose of regular testing of low water fuel cut-offs?
What can cause poor heat transfer in a boiler?
What can cause poor heat transfer in a boiler?
What is the primary purpose of tracking steam production, fuel flow, and flue gas temperature on a common screen?
What is the primary purpose of tracking steam production, fuel flow, and flue gas temperature on a common screen?
What is the purpose of performing tests on boiler water, deaerated feedwater, and condensate?
What is the purpose of performing tests on boiler water, deaerated feedwater, and condensate?
What is the primary objective of the continuous blowdown (CBD) process?
What is the primary objective of the continuous blowdown (CBD) process?
What is the importance of keeping the boiler room and equipment clean?
What is the importance of keeping the boiler room and equipment clean?
What should be done to minimize oxygen in the boiler water?
What should be done to minimize oxygen in the boiler water?
What is the recommended practice for feeding make-up water into a steam heating system?
What is the recommended practice for feeding make-up water into a steam heating system?
What is the primary purpose of maintaining the Boiler Room Log?
What is the primary purpose of maintaining the Boiler Room Log?
What is the indication of possible water leakage in low-pressure steam boilers?
What is the indication of possible water leakage in low-pressure steam boilers?
Why is it essential to monitor the make-up water flow?
Why is it essential to monitor the make-up water flow?
What is the purpose of backwashing filters and regenerating ion exchange softeners in external water treatment equipment?
What is the purpose of backwashing filters and regenerating ion exchange softeners in external water treatment equipment?
What is the primary cause of a rapidly falling water level in a boiler?
What is the primary cause of a rapidly falling water level in a boiler?
What should the operator do first if the boiler is in operation but the water level is not visible in the gauge glass?
What should the operator do first if the boiler is in operation but the water level is not visible in the gauge glass?
What is the recommended procedure if a boiler sustains a low water condition?
What is the recommended procedure if a boiler sustains a low water condition?
What is the consequence of a high water level in a boiler?
What is the consequence of a high water level in a boiler?
What should the operator do if the water level in the gauge glass is higher than normal?
What should the operator do if the water level in the gauge glass is higher than normal?
What is the recommended procedure if carryover or priming is suspected in a boiler?
What is the recommended procedure if carryover or priming is suspected in a boiler?
What is the purpose of manually controlling the drum level when the automatic control is not functioning?
What is the purpose of manually controlling the drum level when the automatic control is not functioning?
What is the recommended procedure when manually controlling the drum level with a bypass valve?
What is the recommended procedure when manually controlling the drum level with a bypass valve?
What should the operator do if the boiler is found to have a low water level below the lowest visible point of the gauge glass?
What should the operator do if the boiler is found to have a low water level below the lowest visible point of the gauge glass?
What is the purpose of determining the underlying cause of a high water condition in a boiler?
What is the purpose of determining the underlying cause of a high water condition in a boiler?
What is the primary function of the programmed combustion control sequence in hot water boilers?
What is the primary function of the programmed combustion control sequence in hot water boilers?
What is a key aspect of routine boiler checks that operators must perform daily?
What is a key aspect of routine boiler checks that operators must perform daily?
Why is it crucial to ensure regular checks of hot water heating boilers, despite not requiring continuous supervision?
Why is it crucial to ensure regular checks of hot water heating boilers, despite not requiring continuous supervision?
What is the primary purpose of monitoring the flame condition during daily routine checks?
What is the primary purpose of monitoring the flame condition during daily routine checks?
Why do hot water boilers require regular attention, despite having fully automatic systems?
Why do hot water boilers require regular attention, despite having fully automatic systems?
What is the primary benefit of the programmed combustion control sequence in hot water boilers?
What is the primary benefit of the programmed combustion control sequence in hot water boilers?
What is the colour of a light fuel oil flame?
What is the colour of a light fuel oil flame?
What is the primary indication of fouled heating surfaces?
What is the primary indication of fouled heating surfaces?
What is the recommended action if the burner nozzle is dirty?
What is the recommended action if the burner nozzle is dirty?
What is the primary cause of excessive soot in the furnace?
What is the primary cause of excessive soot in the furnace?
What is the recommended maximum operating temperature for hot water heating boilers?
What is the recommended maximum operating temperature for hot water heating boilers?
What is the primary consequence of over-firing a boiler?
What is the primary consequence of over-firing a boiler?
What is the primary purpose of tracking the flue gas temperature?
What is the primary purpose of tracking the flue gas temperature?
What is the recommended action if the flue gas temperature is too high?
What is the recommended action if the flue gas temperature is too high?
What is the primary indication of water vapour in the combustion process?
What is the primary indication of water vapour in the combustion process?
What is the primary purpose of checking the boiler discharge water temperature?
What is the primary purpose of checking the boiler discharge water temperature?
What is the primary reason for restricting blowoff and blowdown in hot water heating boilers?
What is the primary reason for restricting blowoff and blowdown in hot water heating boilers?
What is the purpose of checking the residual of corrosion inhibitor in closed hot water heating systems?
What is the purpose of checking the residual of corrosion inhibitor in closed hot water heating systems?
Why is it necessary to renew gauge glass gaskets in conventional air cushion expansion tanks?
Why is it necessary to renew gauge glass gaskets in conventional air cushion expansion tanks?
What is the minimum pressure differential required between the safety relief valve set pressure and the boiler operating pressure according to ASME VI, when the safety relief valve is set to open at 400 kPa?
What is the minimum pressure differential required between the safety relief valve set pressure and the boiler operating pressure according to ASME VI, when the safety relief valve is set to open at 400 kPa?
What is the consequence of not replacing a damaged tank bladder in a conventional air cushion expansion tank?
What is the consequence of not replacing a damaged tank bladder in a conventional air cushion expansion tank?
What is the consequence of a small pressure differential between the safety relief valve set pressure and the boiler operating pressure?
What is the consequence of a small pressure differential between the safety relief valve set pressure and the boiler operating pressure?
What is the purpose of shot feeding water treatment chemicals into a hot water heating system?
What is the purpose of shot feeding water treatment chemicals into a hot water heating system?
What is the primary reason for checking the expansion tank regularly in a hot water heating system?
What is the primary reason for checking the expansion tank regularly in a hot water heating system?
What is the primary reason for performing regular steam boiler operating duties?
What is the primary reason for performing regular steam boiler operating duties?
What is the effect of a full expansion tank on the boiler operation in a hot water heating system?
What is the effect of a full expansion tank on the boiler operation in a hot water heating system?
What is the consequence of not repairing air leaks in conventional air cushion expansion tanks?
What is the consequence of not repairing air leaks in conventional air cushion expansion tanks?
What is the purpose of an automatic feed valve in a hot water heating system?
What is the purpose of an automatic feed valve in a hot water heating system?
What is the consequence of not addressing water losses in a hot water heating system?
What is the consequence of not addressing water losses in a hot water heating system?
What is the purpose of using pipe plugs or caps on the vent and drain lines in conventional air cushion expansion tanks?
What is the purpose of using pipe plugs or caps on the vent and drain lines in conventional air cushion expansion tanks?
What is the recommended procedure to check the air charge in a bladder-style expansion tank?
What is the recommended procedure to check the air charge in a bladder-style expansion tank?
Why is it necessary to depress the Schrader valve stem in a conventional air cushion expansion tank?
Why is it necessary to depress the Schrader valve stem in a conventional air cushion expansion tank?
What is the primary purpose of re-coring a Schrader valve in a conventional air cushion expansion tank?
What is the primary purpose of re-coring a Schrader valve in a conventional air cushion expansion tank?
What is the effect of a leaking circulating pump packing or seals in a hot water heating system?
What is the effect of a leaking circulating pump packing or seals in a hot water heating system?
What is the purpose of regularly checking the heating system to ensure it is completely filled with water?
What is the purpose of regularly checking the heating system to ensure it is completely filled with water?
What is the consequence of a full expansion tank in a hot water heating system if left unaddressed?
What is the consequence of a full expansion tank in a hot water heating system if left unaddressed?
What is the main purpose of the operator's familiarity with the method of changing over from automatic to hand control of fuel admission to the furnace?
What is the main purpose of the operator's familiarity with the method of changing over from automatic to hand control of fuel admission to the furnace?
What is the recommended procedure to prevent safety valves from weeping or simmering due to high pressure?
What is the recommended procedure to prevent safety valves from weeping or simmering due to high pressure?
What is the primary reason for not relying entirely on water level controls, emergency water feeders, or automatic alarms?
What is the primary reason for not relying entirely on water level controls, emergency water feeders, or automatic alarms?
What is the primary purpose of blowing down the gauge glass and water column?
What is the primary purpose of blowing down the gauge glass and water column?
What is the correct procedure when the boiler load increases?
What is the correct procedure when the boiler load increases?
What is the recommended maximum boiler operating pressure for a hot water heating boiler with a safety relief valve set to 207 kPa?
What is the recommended maximum boiler operating pressure for a hot water heating boiler with a safety relief valve set to 207 kPa?
What is the recommended procedure when dealing with persistent foaming in the boiler?
What is the recommended procedure when dealing with persistent foaming in the boiler?
What is the primary function of the gauge glass?
What is the primary function of the gauge glass?
Why is it necessary to keep the heating surfaces free from soot and ash?
Why is it necessary to keep the heating surfaces free from soot and ash?
What is the purpose of testing the low water fuel cut-off?
What is the purpose of testing the low water fuel cut-off?
What is the consequence of not maintaining the recommended pressure differential between the safety valve set pressure and the boiler operating pressure control?
What is the consequence of not maintaining the recommended pressure differential between the safety valve set pressure and the boiler operating pressure control?
What is the purpose of the daily checks performed by boiler operators?
What is the purpose of the daily checks performed by boiler operators?
What is the consequence of a wide fluctuation of the water level in the boiler?
What is the consequence of a wide fluctuation of the water level in the boiler?
Why is it necessary to regularly test the water conditions in the boiler?
Why is it necessary to regularly test the water conditions in the boiler?
What is the recommended maximum boiler operating pressure for a steam power boiler with a safety valve set point of 1725 kPa?
What is the recommended maximum boiler operating pressure for a steam power boiler with a safety valve set point of 1725 kPa?
What is the purpose of regularly monitoring the steam production in the boiler?
What is the purpose of regularly monitoring the steam production in the boiler?
What is the primary objective of the operator's daily checks?
What is the primary objective of the operator's daily checks?
What is the recommended boiler load when operating soot blowers?
What is the recommended boiler load when operating soot blowers?
What is the consequence of not regularly blowing down the gauge glass and water column?
What is the consequence of not regularly blowing down the gauge glass and water column?
What is the purpose of checking the return line and other parts of the system for evidence of corrosion?
What is the purpose of checking the return line and other parts of the system for evidence of corrosion?
What is the primary purpose of tracking steam production, fuel flow, and flue gas temperature on a common screen in larger plants?
What is the primary purpose of tracking steam production, fuel flow, and flue gas temperature on a common screen in larger plants?
Why is it important to perform tests on boiler water, deaerated feedwater, and condensate at regular intervals?
Why is it important to perform tests on boiler water, deaerated feedwater, and condensate at regular intervals?
What is the primary purpose of the continuous blowdown (CBD) process?
What is the primary purpose of the continuous blowdown (CBD) process?
Why is it important to inspect the boiler and its components regularly?
Why is it important to inspect the boiler and its components regularly?
What is the purpose of monitoring the make-up water flow?
What is the purpose of monitoring the make-up water flow?
Why is it important to maintain a clean boiler room and equipment?
Why is it important to maintain a clean boiler room and equipment?
What is the purpose of the Boiler Room Log?
What is the purpose of the Boiler Room Log?
Why is it important to check for signs of leakage from safety valves, manholes, and other components during inspections?
Why is it important to check for signs of leakage from safety valves, manholes, and other components during inspections?
What is the primary purpose of monitoring the boiler water conductivity?
What is the primary purpose of monitoring the boiler water conductivity?
Why is it important to feed make-up water into the condensate return tank instead of directly into the boiler?
Why is it important to feed make-up water into the condensate return tank instead of directly into the boiler?
What is the primary reason for not feeding water into the boiler immediately after a low water condition is detected?
What is the primary reason for not feeding water into the boiler immediately after a low water condition is detected?
What is the recommended procedure when the water level in the gauge glass is higher than normal?
What is the recommended procedure when the water level in the gauge glass is higher than normal?
What is the consequence of a high water level in a boiler if water enters the steam lines?
What is the consequence of a high water level in a boiler if water enters the steam lines?
What should the operator do if the boiler is in operation but the water level is not visible in the gauge glass?
What should the operator do if the boiler is in operation but the water level is not visible in the gauge glass?
What is the purpose of isolating the boiler from the main steam header when carryover or priming is suspected?
What is the purpose of isolating the boiler from the main steam header when carryover or priming is suspected?
What is the recommended procedure when the underlying cause of a high water condition is being determined and repaired?
What is the recommended procedure when the underlying cause of a high water condition is being determined and repaired?
What is the consequence of a faulty feedwater level controller in a boiler?
What is the consequence of a faulty feedwater level controller in a boiler?
What is the purpose of having at least two operators present when manually controlling the drum level with a bypass valve?
What is the purpose of having at least two operators present when manually controlling the drum level with a bypass valve?
What is the recommended procedure when the cause of a low water level is being determined and repaired?
What is the recommended procedure when the cause of a low water level is being determined and repaired?
What is the consequence of not determining and correcting the cause of a low water level in a boiler?
What is the consequence of not determining and correcting the cause of a low water level in a boiler?
What is the consequence of a draft fan failure in a furnace?
What is the consequence of a draft fan failure in a furnace?
What is the purpose of a low-air cut-off switch in a boiler?
What is the purpose of a low-air cut-off switch in a boiler?
Why must the fuel flow stop immediately if a flame failure occurs?
Why must the fuel flow stop immediately if a flame failure occurs?
What is the purpose of flame detection devices in a boiler?
What is the purpose of flame detection devices in a boiler?
What is the primary cause of most boiler accidents?
What is the primary cause of most boiler accidents?
What may cause a draft fan to fail?
What may cause a draft fan to fail?
What is required to be reported by the person in charge of a boiler or pressure vessel in the event of an explosion?
What is required to be reported by the person in charge of a boiler or pressure vessel in the event of an explosion?
What is the purpose of a systematic check of the actual operation against the normal sequence during boiler operation?
What is the purpose of a systematic check of the actual operation against the normal sequence during boiler operation?
Why is it important to have a good knowledge of the control system during boiler operation?
Why is it important to have a good knowledge of the control system during boiler operation?
What should not be moved or interfered with at the scene of an explosion until an inspector has investigated the accident?
What should not be moved or interfered with at the scene of an explosion until an inspector has investigated the accident?
What is the purpose of following a routine during boiler troubleshooting?
What is the purpose of following a routine during boiler troubleshooting?
What is fundamental to any boiler operation?
What is fundamental to any boiler operation?
Why are regular checks of operating and protective devices necessary in automatically fired packaged boilers?
Why are regular checks of operating and protective devices necessary in automatically fired packaged boilers?
What is a common cause of furnace explosions in boilers?
What is a common cause of furnace explosions in boilers?
Why is it important for boiler operators to know the basic causes of explosions?
Why is it important for boiler operators to know the basic causes of explosions?
What can occur when a pressure part of the boiler bursts due to excessive steam pressure or structural weakness?
What can occur when a pressure part of the boiler bursts due to excessive steam pressure or structural weakness?
Why is it important to perform regular maintenance and checks on boilers and controls?
Why is it important to perform regular maintenance and checks on boilers and controls?
What can cause overheating of the heating surfaces in a boiler?
What can cause overheating of the heating surfaces in a boiler?
What is a common cause of pressure explosions in boilers?
What is a common cause of pressure explosions in boilers?
Why is it important for boiler operators to refrain from unsafe practices that may lead to explosions?
Why is it important for boiler operators to refrain from unsafe practices that may lead to explosions?
What can occur when a boiler's furnace or gas passes contain an explosive air/fuel mixture?
What can occur when a boiler's furnace or gas passes contain an explosive air/fuel mixture?
Why is it important for boiler operators to conscientiously follow the instructions regarding testing and maintenance of fittings and controls?
Why is it important for boiler operators to conscientiously follow the instructions regarding testing and maintenance of fittings and controls?
What is the purpose of a low-air cut-off switch in a modern automatically-fired packaged boiler?
What is the purpose of a low-air cut-off switch in a modern automatically-fired packaged boiler?
What is the primary reason for shutting off the fuel supply immediately when a draft fan fails?
What is the primary reason for shutting off the fuel supply immediately when a draft fan fails?
What is the purpose of flame detection devices in fluid-fired boilers?
What is the purpose of flame detection devices in fluid-fired boilers?
What is the main reason why boiler accidents can be prevented?
What is the main reason why boiler accidents can be prevented?
What is a common cause of flame failure during boiler operation?
What is a common cause of flame failure during boiler operation?
What is the consequence of a draft fan failure if the fuel supply is not shut off immediately?
What is the consequence of a draft fan failure if the fuel supply is not shut off immediately?
What must the person in charge of the boiler or pressure vessel do in the event of an explosion?
What must the person in charge of the boiler or pressure vessel do in the event of an explosion?
What is essential to have before operating a steam or hot water boiler?
What is essential to have before operating a steam or hot water boiler?
What is the purpose of a systematic check of the actual operation against the normal sequence?
What is the purpose of a systematic check of the actual operation against the normal sequence?
What should not be done at the scene of an explosion until an inspector has investigated the accident?
What should not be done at the scene of an explosion until an inspector has investigated the accident?
What is necessary for systematic troubleshooting?
What is necessary for systematic troubleshooting?
What is the purpose of following a routine when troubleshooting?
What is the purpose of following a routine when troubleshooting?
What is a common cause of furnace explosions in boilers?
What is a common cause of furnace explosions in boilers?
What can occur if the operator neglects the mandatory, regular checking of operating and protective devices in automatically fired packaged boilers?
What can occur if the operator neglects the mandatory, regular checking of operating and protective devices in automatically fired packaged boilers?
What is a common consequence of boiler explosions?
What is a common consequence of boiler explosions?
What is a reason why automatically fired packaged boilers require little attention during operation?
What is a reason why automatically fired packaged boilers require little attention during operation?
What is a cause of pressure explosions in boilers?
What is a cause of pressure explosions in boilers?
What should the operator do to prevent an explosion in a boiler?
What should the operator do to prevent an explosion in a boiler?
What can cause the accumulation of an explosive mixture of fuel and air in a boiler's furnace?
What can cause the accumulation of an explosive mixture of fuel and air in a boiler's furnace?
What is a necessary step to prevent boiler accidents?
What is a necessary step to prevent boiler accidents?
What is a consequence of inadequate maintenance of boilers and controls?
What is a consequence of inadequate maintenance of boilers and controls?
What is a common misconception about automatically fired boilers?
What is a common misconception about automatically fired boilers?
What is a possible cause of a lack of spark in a boiler ignition system?
What is a possible cause of a lack of spark in a boiler ignition system?
What should be done if the pilot or low-fire flame is insufficient?
What should be done if the pilot or low-fire flame is insufficient?
What is a possible cause of the burner staying on low-fire?
What is a possible cause of the burner staying on low-fire?
What should be done if the programmed combustion control “test/run” switch is in the test position?
What should be done if the programmed combustion control “test/run” switch is in the test position?
What is a possible cause of no main flame when the pilot or low-fire flame is present?
What is a possible cause of no main flame when the pilot or low-fire flame is present?
What should be done if the damper motor is not operative?
What should be done if the damper motor is not operative?
What is the possible cause of a shutdown during firing due to a faulty flame detector?
What is the possible cause of a shutdown during firing due to a faulty flame detector?
What is the possible cause of shutdown during firing due to a faulty fuel valve?
What is the possible cause of shutdown during firing due to a faulty fuel valve?
What is the possible cause of air dampers not functioning due to a faulty damper motor?
What is the possible cause of air dampers not functioning due to a faulty damper motor?
What is the possible cause of shutdown during firing due to an improper air-fuel ratio?
What is the possible cause of shutdown during firing due to an improper air-fuel ratio?
What is the possible cause of shutdown during firing due to a faulty limit switch?
What is the possible cause of shutdown during firing due to a faulty limit switch?
What is the possible cause of air dampers not functioning due to a faulty damper positioning switch?
What is the possible cause of air dampers not functioning due to a faulty damper positioning switch?
