3.5 High Pressure Boiler Fittings

Question 1 of 10

1

The internal feed pipe:
1. Serves to distribute the incoming feedwater uniformly along the length of the drum
2. Helps prevent scale build up
3. Prevents temperature shock
4. Helps prevent turbulence

Select one of the following:

1,3,4
2,3,4
1,2,3
2,3,
1,2,4

Explanation

Question 2 of 10

1

Which of the following is the correct procedure, when blowing down a boiler with both a quick-opening and a slow-opening blow-off valve?

Select one of the following:

open the slow opening valve, then open the quick opening valve, After blowing down: close the quick opening valve, then close the slow opening valve
open the quick opening valve, then open the slow opening valve, after blowing down: close the quick opening valve then close the slow opening valve
open the quick opening valve, then open the slow opening valve. after blowing down: close the slow opening valve then close the quick opening valve
open the slow opening valve, then open the quick opening valve. After blowing down: close the slow opening valve, then close the quick opening valve
it does not matter which valve is opened first, after blowing down: it does not matter which valve is closed first

Explanation

Question 3 of 10

1

The blow-off connection to a boiler.
1. is made4 to the lowest point of the boiler
2. is used to drain the boiler
3. is used to blow out mud an sediment.
4. is used to lower the concentration of dissolved impurities

Select one of the following:

1,2,3,4
1,2,3
1,3,4
1,2,4
2,3,4

Explanation

Question 4 of 10

1

A boiler explosion due to overheating of the heating surfaces may result from:

Select one of the following:

Improper furnace purge
A faulty low gas pressure switch
A low-water cut-off malfunction
combustion air switch failure
A faulty flame scanner

Explanation

Question 5 of 10

1

The purpose of the continuous blow-down connection is to:

Select one of the following:

Lower the concentration of dissolved solids in the boiler water
keep the water at the correct level in the gauge glass
keep the steam pressure correct
blow the sludge out of the mud drum
lower the boiler feed water flow to the boiler

Explanation

Question 6 of 10

1

The piping between the non-return valve and the stop valve has a drain valve:
1. To help warm up the header
2. To indicate if there is steam flowing from the boiler
3. To indicate the pressure in the line
4. To drain the condensate out of the header

Select one of the following:

1,2,3,4
1,2
1,3
1,4
1,2,4

Explanation

Question 7 of 10

1

When a boiler has a quick-opening and a slow-opening blow-off valve.
1. The slow-opening valve is next to the boiler
2. The quick-opening valve is next to the boiler
3. It does not matter which one is next to the boiler
4. It does matter which one is next to the boiler

Select one of the following:

1,2,4
3
1,4
2,4
1,2,3

Explanation

Question 8 of 10

1

Which of the following do not require steam stop valves?
1. safety valve
2. Main steam header
3. Reheater
4. Superheater

Select one of the following:

1,3,4
1,2,3
2,3,4
1,2,3,4
1,2,4

Explanation

Question 9 of 10

1

A low water fuel cut-off device:
1. Shuts the fuel off to the boiler when the air flow drops
2. Shuts the fuel off when the burner pressure is low
3. Protects the boiler from overheating
4. Shuts the main fuel valve during a low water condition

Select one of the following:

1,2,3
1,2
2,3
3,4
1,2,4

Explanation

Question 10 of 10

1

Every steam boiler having a working pressure exceeding 103 kPa:
1. Shall be equipped with two approved blow-off valves
2. Must have at least one slow-opening blow-off valve
3. Must have two slow-opening blow-off valves
4. Must have two quick-opening blow-off valves

Select one of the following:

1,4
1,2,4
1,2
3,4
1,3

	Created by TRAVIS CANNING over 8 years ago

Quiz on 3.5 High Pressure Boiler Fittings, created by TRAVIS CANNING on 14/01/2016.

3.5 High Pressure Boiler Fittings

Question 1 of 10

The internal feed pipe: 1. Serves to distribute the incoming feedwater uniformly along the length of the drum 2. Helps prevent scale build up 3. Prevents temperature shock 4. Helps prevent turbulence

Select one of the following:

Explanation

Question 2 of 10

Which of the following is the correct procedure, when blowing down a boiler with both a quick-opening and a slow-opening blow-off valve?

Select one of the following:

Explanation

Question 3 of 10

The blow-off connection to a boiler. 1. is made4 to the lowest point of the boiler 2. is used to drain the boiler 3. is used to blow out mud an sediment. 4. is used to lower the concentration of dissolved impurities

Select one of the following:

Explanation

Question 4 of 10

A boiler explosion due to overheating of the heating surfaces may result from:

Select one of the following:

Explanation

Question 5 of 10

The purpose of the continuous blow-down connection is to:

Select one of the following:

Explanation

Question 6 of 10

The piping between the non-return valve and the stop valve has a drain valve: 1. To help warm up the header 2. To indicate if there is steam flowing from the boiler 3. To indicate the pressure in the line 4. To drain the condensate out of the header

Select one of the following:

Explanation

Question 7 of 10

When a boiler has a quick-opening and a slow-opening blow-off valve. 1. The slow-opening valve is next to the boiler 2. The quick-opening valve is next to the boiler 3. It does not matter which one is next to the boiler 4. It does matter which one is next to the boiler

Select one of the following:

Explanation

Question 8 of 10

Which of the following do not require steam stop valves? 1. safety valve 2. Main steam header 3. Reheater 4. Superheater

Select one of the following:

Explanation

Question 9 of 10

A low water fuel cut-off device: 1. Shuts the fuel off to the boiler when the air flow drops 2. Shuts the fuel off when the burner pressure is low 3. Protects the boiler from overheating 4. Shuts the main fuel valve during a low water condition

Select one of the following:

Explanation

Question 10 of 10

Every steam boiler having a working pressure exceeding 103 kPa: 1. Shall be equipped with two approved blow-off valves 2. Must have at least one slow-opening blow-off valve 3. Must have two slow-opening blow-off valves 4. Must have two quick-opening blow-off valves

Select one of the following:

Explanation

The internal feed pipe:
1. Serves to distribute the incoming feedwater uniformly along the length of the drum
2. Helps prevent scale build up
3. Prevents temperature shock
4. Helps prevent turbulence

The blow-off connection to a boiler.
1. is made4 to the lowest point of the boiler
2. is used to drain the boiler
3. is used to blow out mud an sediment.
4. is used to lower the concentration of dissolved impurities

The piping between the non-return valve and the stop valve has a drain valve:
1. To help warm up the header
2. To indicate if there is steam flowing from the boiler
3. To indicate the pressure in the line
4. To drain the condensate out of the header

When a boiler has a quick-opening and a slow-opening blow-off valve.
1. The slow-opening valve is next to the boiler
2. The quick-opening valve is next to the boiler
3. It does not matter which one is next to the boiler
4. It does matter which one is next to the boiler

Which of the following do not require steam stop valves?
1. safety valve
2. Main steam header
3. Reheater
4. Superheater

A low water fuel cut-off device:
1. Shuts the fuel off to the boiler when the air flow drops
2. Shuts the fuel off when the burner pressure is low
3. Protects the boiler from overheating
4. Shuts the main fuel valve during a low water condition

Every steam boiler having a working pressure exceeding 103 kPa:
1. Shall be equipped with two approved blow-off valves
2. Must have at least one slow-opening blow-off valve
3. Must have two slow-opening blow-off valves
4. Must have two quick-opening blow-off valves