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