Firetube Boilers (Heating & Power) Chapter 3 Flashcards
- On portable Locomotive boilers (railroad units) there was often a draft inducer located in the:
A. Uptake B. Firebox C. Water leg D. Firetube E. Furnace
A. Uptake
- In the HRT boiler the hot combustion gases pass:
A. Along the underside of the drum and return through the firetubes to the boiler stack
B. Along the underside of the drum and return through the firetubes to the boiler grate
C. Through the firetubes and return along the underside of the drum to the boiler stack
D. Through the firetubes and return along the underside of the drum to the boiler grate
E. Along the underside of the drum and return through the firetubes to the economizer
A. ‘‘Along the underside of the drum’’ and return through the firetubes to the ‘‘boiler stack’’
3. In general construction the Firetube boiler is not unlike the \_\_\_\_\_ boiler: A. Firetube B. Watertube C. Scotch Marine D. Locomotive E. Horizontal Return Tube
D. Locomotive
- The stampings on a packaged firetube boiler may indicate a Maximum Allowable Working Pressure (MAWP) of 1000 kPa (145psi), but the applicable code or Certificate of Inspection may show a MAWP of:
A. 100 kPa (14.5 psi)
B. 103 kPa (14.7 psi)
C. 160 kPa (23.2 psi)
D. 1000 kPa (145 psi)
B. 103 kPa (14.7 psi)
- In a vertical firetube boiler, the steam space is located:
A. In a separate chamber
B. In a compartment on the side
C. At the lower part of the shell
D. At the top of the shell
E. In the firetubes
D. At the top of the shell
- The cylindrical portion of the “Locomotive boiler” that connected the furnace to the smoke box was termed the:
A. Firetube
B. Barrel
C. Furnace
D. Crown sheet
E. Fire door
B. Barrel
- Steel plate heating boilers have thin steel installed in the:
A. Water tubes to give the water a swirling motion
B. Firetubes to give the gases a swirling motion
C. Firetubes to give the water a swirling motion
D. Water tubes to give the gases a swirling motion
E. Firetubes to give the air a swirling motion
B. ‘‘Firetubes’’ to give the ‘‘gases’’ a swirling motion
- The HRT boiler is classified as a _____ pass boiler:
A. One
B. Two
C. Three
D. Four
E. Multi
B. Two
- The American Boiler Manufacturing Association defines a packaged firetube boiler
as a:
A. modified Locomotive boiler, engineered, built, and fire tested before shipment and guaranteed in material, workmanship, and performance by one firm, with one manufacturer furnishing and assuming responsibility for all components in the assembled unit.
B. modified HRT boiler, engineered, built, and fire tested before shipment and guaranteed in material, workmanship, and performance by one firm, with one manufacturer furnishing and assuming responsibility for all components in the assembled unit.
C. modified Vertical Firetube boiler, engineered, built, and fire tested before shipment and guaranteed in material, workmanship, and performance by one firm, with one manufacturer furnishing and assuming responsibility for all components in the assembled unit.
D. modified Firebox boiler, engineered, built, and fire tested before shipment and guaranteed in material, workmanship, and performance by one firm, with one manufacturer furnishing and assuming responsibility for all components in the assembled unit.
E. modified Scotch-type boiler, engineered, built, and fire tested before shipment and guaranteed in material, workmanship, and performance by one firm, with one manufacturer furnishing and assuming responsibility for all components in the assembled unit.
E. modified Scotch-type boiler, engineered, built, and fire tested before shipment and guaranteed in material, workmanship, and performance by one firm, with one manufacturer furnishing and assuming responsibility for all components in the assembled unit.
10. Vertical firetube boilers have an advantage when\_\_\_\_is limited: A. Height B. Weight C. Floor space D. Pressure E. Temperature
C. Floor space
11. As per applicable code the maximum pressure for a low-pressure steam heating boiler is: A. 100 kPa (14.5 psi) B. 103 kPa (14.7 psi) C. 160 kPa (23.2 psi) D. 250 kPa (36.2 psi) E. 1100 kPa (1100 psi)
B. 103 kPa (14.7 psi)
- . A major advantage of the Locomotive boiler was the:
A. Use of longitudinal stays
B. Absence of brickwork, refractory or setting
C. Size of the smoke box
D. Use of a draft inducer
E. Internal furnace
B. Absence of brickwork, refractory or setting
13. Early HRT boilers were fired using: A. Coal on grates B. Natural gas C. Fuel oil D. Pulverized coal E. Wood stokers
A. Coal on grates
- The HRT boiler is inefficient to operate due to:
A. The labour required to construct the brickwork
B. The gas passes were to long
C. The gas passes were too few
D. Heat loss through the brick setting was too high
E. The coal fired grates
D. Heat loss through the brick setting was too high
15. On portable Locomotive boilers (railroad units) there was often a draft inducer located in the: A. Uptake B. Firebox C. Water leg D. Firetube E. Furnace
A. Uptake
16. The vertical firetube boiler should be warmed up slowly in order to prevent overheating of the: A. Tubes and upper tube sheet B. Tubes and lower tube sheet C. Crown sheet and barrel D. Crown sheet and water legs E. Steam drum and mud drum
A. Tubes and upper tube sheet
17. In the firetube boiler \_\_\_\_\_ pass through the tubes. A. Feedwater B. Fuel gas C. Fuel oil D. Hot air E. Hot gases
E. Hot gases
18. The Steel plate heating boiler is classified as a \_\_\_\_\_ pass boiler. A. One B. Two C. Three D. Four E. Multi
A. One
19. The Locomotive boiler has a furnace that is: A. External B. Almost completely surrounded by water C. Partially surrounded by brickwood D. Called a firetube E. Not part of a pressure shell
B. Almost completely surrounded by water
20. The uptake area of a Locomotive boiler was often equipped with a: A. Damper for combustion air control B. Smoke box for smoke control C. Fire door D. Water leg E. Damper for combustion control
A. Damper for combustion air control
21. The "top of the furnace in a Locomotive boiler" was termed the: A. Uptake B. Firebox C. Barrel D. Crown sheet E. Smoke box
D. Crown sheet
22. The vertical firetube boiler has a cylindrical shell with tubes connected between the: A. Steam drum and the mud drum B. Front and rear tube sheets C. Crown sheet and the shell D. Crown sheet and the barrel E. Upper and lower tube sheets
E. Upper and lower tube sheets
- As per applicable code the pressure and temperature limiting factors for
steam and hot water heating boilers are:
A. 121 kPa or 103˚C (17.5 or 217˚F) for steam and 1103 kPa (160 psi) for
hot water
B. 1103 kPa (160 psi) for steam and 103 kPa or 121˚C (14.7 or 250˚F) for
hot water
C. 103 kPa (15 psi) for steam and 121˚C or 1100 kPa (250˚F or 160 psi) for
hot water
D. 1103 kPa or 121˚C (160 psi or 250˚F) for steam and 1103 kPa (160 psi) for
hot water
E. 100 kPa (15 psi) for steam and 120˚C or 1100 kPa (250˚F or 160 psi) for
hot water
C. 103 kPa (15 psi) for steam and 121˚C or 1100 kPa (250˚F or 160 psi) for
hot water
- In order to reduce extensive heat losses from the externally fires furnace
walls:
A. The furnace was made longer
B. The furnace was enlarged
C. More firetubes were added
D. The furnace grate was placed inside the enlarged return flue
E. The furnace walls were lined with refractory
D. The furnace grate was placed inside the enlarged return flue
25. At atmospheric conditions with the heat available 1 litre of water will produce \_\_\_\_\_ litres of steam. A. 500 B. 1000 C. 1500 D. 1700 E. 2000
D. 1700
26. The crown sheet of a Locomotive boiler was held in place by: A. Longitudinal stays B. Stay bolts C. Grates D. Fusible plugs E. Radial stays
E. Radial stays
- The HRT boiler is inefficient to operate due to:
A. The labour required to construct the brickwork
B. The gas passes were to long
C. The gas passes were too few
D. Heat loss through the brick setting was too high
E. The coal fired grates
D. Heat loss through the brick setting was too high
Answer Chapter 3 Firetube Boilers (Heating & Power) 1. A 2. A 3. D 4. B 5. D 6. B 7. B 8. B 9. E 10. C 11. B 12. B 13. A 14. D 15. A 16. A 17. E 18. A 19. B 20. A 21. D 22. E 23. C 24. D 25. D 26. E 27. D
