What authority establishes design
rules for boilers?
Society of American Military
American Welding Society (AWS)
American Society of Mechanical
Department of Occupational
Safety and Health (OSHA)
The headers in a sectional-header
cross drum boiler are made of what
type of material?
1. Forged steel
2. Polished brass
4. Cast iron
Gases are directed across the tubes of
the sectional-header cross drum boiler
a total of how many times before
being discharged from the boiler?
1-10. What number of plates go into the
makeup of the box-header cross drum
1-11. What types of drums are used in the
box-header longitudinal drum boiler?
1. Horizontal or inclined
2. Vertical or inclined
3. Vertical or horizontal
4. Longitudinal or vertical
1-12. What types of drums are used in the
1. Steam, water, and tube
2. Tube, crosshead, and water
3. Crosshead, tube, and steam
4. Mud, steam, and water
1-13. Which of the following factors is a
disadvantage of water-tube boilers?
1. Little flexibility in starting-up
2. Low productive capacity
3. Considerable danger of disastrous
4. High construction costs
1-14. The Scotch marine boiler is classified
as what type of boiler?
1. Water tube
3. Fire tube
4. Bent tube
1-15. What advantage does the Scotch
marine boiler have over other boilers
for Seabee use?
1. Its shell does not require
2. Its furnace is fired from the
3. It is portable
4. It is easy to clean the surfaces of
the section below the combustion