#ramping — Public Fediverse posts

Answers for ramping

1. When load is at 10% and flashtank steam is 500 psi, the ramp is begun.

2. The 205 valve controls flow from the flashtank to the turbine.

3. False.
You must get 700 F and wait until the temperature has stabilized before proceeding with the ramp.

4. The operator sets the megawatt demand station for final load and load rate of change.

5. Early in the ramp, firing rate is based on gas temperature. After the thermoprobes retract, firing rate is based on main steam temperature.

6. The ramp begins at Point C.

7. The turbine is in automatic and megawatt demand is increased to 33% of full load flow.

8. The 202 and 207 valves close to maintain 33% boiler flow as the 201 opens to increase turbine flow. Closing of the the 202 and 207 valves reduce flow to the flashtank to compensate.

9. Since steam flow changes faster than firing rate, the firing must be kept above desired steam flow.

10. The steam temperature at the primary superheater and convection pass outlets are firing rate indicators.

------------------------------------------------- 25 ------------------------------------------------------

#ramping #boilermanual #page25 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 19:16 UTC

Answers for ramping

1. When load is at 10% and flashtank steam is 500 psi, the ramp is begun.

2. The 205 valve controls flow from the flashtank to the turbine.

3. False.
You must get 700 F and wait until the temperature has stabilized before proceeding with the ramp.

4. The operator sets the megawatt demand station for final load and load rate of change.

5. Early in the ramp, firing rate is based on gas temperature. After the thermoprobes retract, firing rate is based on main steam temperature.

6. The ramp begins at Point C.

7. The turbine is in automatic and megawatt demand is increased to 33% of full load flow.

8. The 202 and 207 valves close to maintain 33% boiler flow as the 201 opens to increase turbine flow. Closing of the the 202 and 207 valves reduce flow to the flashtank to compensate.

9. Since steam flow changes faster than firing rate, the firing must be kept above desired steam flow.

10. The steam temperature at the primary superheater and convection pass outlets are firing rate indicators.

------------------------------------------------- 25 ------------------------------------------------------

#ramping #boilermanual #page25 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 19:16 UTC

Answers for ramping

1. When load is at 10% and flashtank steam is 500 psi, the ramp is begun.

2. The 205 valve controls flow from the flashtank to the turbine.

3. False.
You must get 700 F and wait until the temperature has stabilized before proceeding with the ramp.

4. The operator sets the megawatt demand station for final load and load rate of change.

5. Early in the ramp, firing rate is based on gas temperature. After the thermoprobes retract, firing rate is based on main steam temperature.

6. The ramp begins at Point C.

7. The turbine is in automatic and megawatt demand is increased to 33% of full load flow.

8. The 202 and 207 valves close to maintain 33% boiler flow as the 201 opens to increase turbine flow. Closing of the the 202 and 207 valves reduce flow to the flashtank to compensate.

9. Since steam flow changes faster than firing rate, the firing must be kept above desired steam flow.

10. The steam temperature at the primary superheater and convection pass outlets are firing rate indicators.

------------------------------------------------- 25 ------------------------------------------------------

#ramping #boilermanual #page25 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 19:16 UTC

Answers for ramping

1. When load is at 10% and flashtank steam is 500 psi, the ramp is begun.

2. The 205 valve controls flow from the flashtank to the turbine.

3. False.
You must get 700 F and wait until the temperature has stabilized before proceeding with the ramp.

4. The operator sets the megawatt demand station for final load and load rate of change.

5. Early in the ramp, firing rate is based on gas temperature. After the thermoprobes retract, firing rate is based on main steam temperature.

6. The ramp begins at Point C.

7. The turbine is in automatic and megawatt demand is increased to 33% of full load flow.

8. The 202 and 207 valves close to maintain 33% boiler flow as the 201 opens to increase turbine flow. Closing of the the 202 and 207 valves reduce flow to the flashtank to compensate.

9. Since steam flow changes faster than firing rate, the firing must be kept above desired steam flow.

10. The steam temperature at the primary superheater and convection pass outlets are firing rate indicators.

------------------------------------------------- 25 ------------------------------------------------------

#section8 #page25 #boilermanual #ramping

Radio Free Trumpistan @[email protected] · 2026-06-16 · 19:16 UTC

Answers for ramping

1. When load is at 10% and flashtank steam is 500 psi, the ramp is begun.

2. The 205 valve controls flow from the flashtank to the turbine.

3. False.
You must get 700 F and wait until the temperature has stabilized before proceeding with the ramp.

4. The operator sets the megawatt demand station for final load and load rate of change.

5. Early in the ramp, firing rate is based on gas temperature. After the thermoprobes retract, firing rate is based on main steam temperature.

6. The ramp begins at Point C.

7. The turbine is in automatic and megawatt demand is increased to 33% of full load flow.

8. The 202 and 207 valves close to maintain 33% boiler flow as the 201 opens to increase turbine flow. Closing of the the 202 and 207 valves reduce flow to the flashtank to compensate.

9. Since steam flow changes faster than firing rate, the firing must be kept above desired steam flow.

10. The steam temperature at the primary superheater and convection pass outlets are firing rate indicators.

------------------------------------------------- 25 ------------------------------------------------------

#ramping #boilermanual #page25 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 19:11 UTC

9. Why is actual firing rate kept above steady state?

10. In this graph, which two temperatures are an indication of firing rate?

------------------------------------------------- 24 ------------------------------------------------------
Alt = This chart for question 10 is identical to Fig. 8 on page 18.

#ramping #boilermanual #page24 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 19:11 UTC

9. Why is actual firing rate kept above steady state?

10. In this graph, which two temperatures are an indication of firing rate?

------------------------------------------------- 24 ------------------------------------------------------
Alt = This chart for question 10 is identical to Fig. 8 on page 18.

#ramping #boilermanual #page24 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 19:11 UTC

9. Why is actual firing rate kept above steady state?

10. In this graph, which two temperatures are an indication of firing rate?

------------------------------------------------- 24 ------------------------------------------------------
Alt = This chart for question 10 is identical to Fig. 8 on page 18.

#ramping #boilermanual #page24 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 19:11 UTC

9. Why is actual firing rate kept above steady state?

10. In this graph, which two temperatures are an indication of firing rate?

------------------------------------------------- 24 ------------------------------------------------------
Alt = This chart for question 10 is identical to Fig. 8 on page 18.

#section8 #page24 #boilermanual #ramping

Radio Free Trumpistan @[email protected] · 2026-06-16 · 19:11 UTC

9. Why is actual firing rate kept above steady state?

10. In this graph, which two temperatures are an indication of firing rate?

------------------------------------------------- 24 ------------------------------------------------------
Alt = This chart for question 10 is identical to Fig. 8 on page 18.

#ramping #boilermanual #page24 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 19:03 UTC

8. In this graph the 207 and 202 valves are closing. Why?

------------------------------------------------- 23 ------------------------------------------------------
Alt = The top chart on this page is addressed by question 7 on the previous page and the lines is identical to chart 6A of Fig. 6 on page 13 but with all but the line identification markings removed.
The lower chart associated with question 8 on this page is identical to chart 6C of Fig. 6 on page 13, complete with labels.

#ramping #boilermanual #page23 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 19:03 UTC

8. In this graph the 207 and 202 valves are closing. Why?

------------------------------------------------- 23 ------------------------------------------------------
Alt = The top chart on this page is addressed by question 7 on the previous page and the lines is identical to chart 6A of Fig. 6 on page 13 but with all but the line identification markings removed.
The lower chart associated with question 8 on this page is identical to chart 6C of Fig. 6 on page 13, complete with labels.

#ramping #boilermanual #page23 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 19:03 UTC

8. In this graph the 207 and 202 valves are closing. Why?

------------------------------------------------- 23 ------------------------------------------------------
Alt = The top chart on this page is addressed by question 7 on the previous page and the lines is identical to chart 6A of Fig. 6 on page 13 but with all but the line identification markings removed.
The lower chart associated with question 8 on this page is identical to chart 6C of Fig. 6 on page 13, complete with labels.

#ramping #boilermanual #page23 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 19:03 UTC

8. In this graph the 207 and 202 valves are closing. Why?

------------------------------------------------- 23 ------------------------------------------------------
Alt = The top chart on this page is addressed by question 7 on the previous page and the lines is identical to chart 6A of Fig. 6 on page 13 but with all but the line identification markings removed.
The lower chart associated with question 8 on this page is identical to chart 6C of Fig. 6 on page 13, complete with labels.

#section8 #page23 #boilermanual #ramping

Radio Free Trumpistan @[email protected] · 2026-06-16 · 19:03 UTC

8. In this graph the 207 and 202 valves are closing. Why?

------------------------------------------------- 23 ------------------------------------------------------
Alt = The top chart on this page is addressed by question 7 on the previous page and the lines is identical to chart 6A of Fig. 6 on page 13 but with all but the line identification markings removed.
The lower chart associated with question 8 on this page is identical to chart 6C of Fig. 6 on page 13, complete with labels.

#ramping #boilermanual #page23 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 18:48 UTC

Questions for ramping

1. The ramp can be initiated when the unit load is ____% and there is ____ psi steam.

2. What valve controls flow from the flashtank to the turbine?

3. True or False.
With all other conditions met, the secondary superheater ramp may be started immediately after you get 700 F at the primary superheater outlet.

4. Many ramp conditions are automatic. What does the operator set?

5. On what do you base firing rate?

6. The ramp begins after the system has stabilized, the turbine is on _____________ and megawatt demand station is increased to _____________.

7. On this graph, at what point does the pressure ramp begin?

------------------------------------------------- 22 ------------------------------------------------------

#ramping #boilermanual #page22 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 18:48 UTC

Questions for ramping

1. The ramp can be initiated when the unit load is ____% and there is ____ psi steam.

2. What valve controls flow from the flashtank to the turbine?

3. True or False.
With all other conditions met, the secondary superheater ramp may be started immediately after you get 700 F at the primary superheater outlet.

4. Many ramp conditions are automatic. What does the operator set?

5. On what do you base firing rate?

6. The ramp begins after the system has stabilized, the turbine is on _____________ and megawatt demand station is increased to _____________.

7. On this graph, at what point does the pressure ramp begin?

------------------------------------------------- 22 ------------------------------------------------------

#ramping #boilermanual #page22 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 18:48 UTC

Questions for ramping

1. The ramp can be initiated when the unit load is ____% and there is ____ psi steam.

2. What valve controls flow from the flashtank to the turbine?

3. True or False.
With all other conditions met, the secondary superheater ramp may be started immediately after you get 700 F at the primary superheater outlet.

4. Many ramp conditions are automatic. What does the operator set?

5. On what do you base firing rate?

6. The ramp begins after the system has stabilized, the turbine is on _____________ and megawatt demand station is increased to _____________.

7. On this graph, at what point does the pressure ramp begin?

------------------------------------------------- 22 ------------------------------------------------------

#ramping #boilermanual #page22 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 18:48 UTC

Questions for ramping

1. The ramp can be initiated when the unit load is ____% and there is ____ psi steam.

2. What valve controls flow from the flashtank to the turbine?

3. True or False.
With all other conditions met, the secondary superheater ramp may be started immediately after you get 700 F at the primary superheater outlet.

4. Many ramp conditions are automatic. What does the operator set?

5. On what do you base firing rate?

6. The ramp begins after the system has stabilized, the turbine is on _____________ and megawatt demand station is increased to _____________.

7. On this graph, at what point does the pressure ramp begin?

------------------------------------------------- 22 ------------------------------------------------------

#section8 #page22 #boilermanual #ramping

Radio Free Trumpistan @[email protected] · 2026-06-16 · 18:48 UTC

Questions for ramping

1. The ramp can be initiated when the unit load is ____% and there is ____ psi steam.

2. What valve controls flow from the flashtank to the turbine?

3. True or False.
With all other conditions met, the secondary superheater ramp may be started immediately after you get 700 F at the primary superheater outlet.

4. Many ramp conditions are automatic. What does the operator set?

5. On what do you base firing rate?

6. The ramp begins after the system has stabilized, the turbine is on _____________ and megawatt demand station is increased to _____________.

7. On this graph, at what point does the pressure ramp begin?

------------------------------------------------- 22 ------------------------------------------------------

#ramping #boilermanual #page22 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 18:44 UTC

Again, the major problem with this ramp was the failure to establish proper pre-ramp conditions at the CP and PSH outlets. Had the proper temperatures been established and the boiler stable, the 207 valve would have been far enough open to compensate for the initial opening of the 201 valves and PSH outlet temperature would not have dropped. The resultant overfiring early in the ramp to raise that temperature could have been avoided.

The overfiring at the end of the ramp could also have been avoided if the firing rte had been reduced rather than increased, as the increasing CP and PSH temperatures indicated it should have been. Graphs in the control room of the proper firing rate, MW, and throttle pressure for each boiler master position certainly would have helped in avoiding this problem. {Such graphs were found in the control room at Baldwin for each unit, plotted out in real time via chart recorders. These gizmos consisted of an overhead ink pen tip touching a rather long scroll of graph paper loaded into them.}

You should now be able to understand the importance of maintaining proper pre-ramp conditions. The ramping process depends on the operation of many valves to maintain proper pressures and temperatures throughout the system for safe and efficient startups. A timely and orderly startup from bypass to ramping requires complete understanding of the operation of each valve and its function with the boiler cycle.

------------------------------------------------- 21 ------------------------------------------------------

#ramping #boilermanual #page21 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 18:44 UTC

Again, the major problem with this ramp was the failure to establish proper pre-ramp conditions at the CP and PSH outlets. Had the proper temperatures been established and the boiler stable, the 207 valve would have been far enough open to compensate for the initial opening of the 201 valves and PSH outlet temperature would not have dropped. The resultant overfiring early in the ramp to raise that temperature could have been avoided.

The overfiring at the end of the ramp could also have been avoided if the firing rte had been reduced rather than increased, as the increasing CP and PSH temperatures indicated it should have been. Graphs in the control room of the proper firing rate, MW, and throttle pressure for each boiler master position certainly would have helped in avoiding this problem. {Such graphs were found in the control room at Baldwin for each unit, plotted out in real time via chart recorders. These gizmos consisted of an overhead ink pen tip touching a rather long scroll of graph paper loaded into them.}

You should now be able to understand the importance of maintaining proper pre-ramp conditions. The ramping process depends on the operation of many valves to maintain proper pressures and temperatures throughout the system for safe and efficient startups. A timely and orderly startup from bypass to ramping requires complete understanding of the operation of each valve and its function with the boiler cycle.

------------------------------------------------- 21 ------------------------------------------------------

#ramping #boilermanual #page21 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 18:44 UTC

Again, the major problem with this ramp was the failure to establish proper pre-ramp conditions at the CP and PSH outlets. Had the proper temperatures been established and the boiler stable, the 207 valve would have been far enough open to compensate for the initial opening of the 201 valves and PSH outlet temperature would not have dropped. The resultant overfiring early in the ramp to raise that temperature could have been avoided.

The overfiring at the end of the ramp could also have been avoided if the firing rte had been reduced rather than increased, as the increasing CP and PSH temperatures indicated it should have been. Graphs in the control room of the proper firing rate, MW, and throttle pressure for each boiler master position certainly would have helped in avoiding this problem. {Such graphs were found in the control room at Baldwin for each unit, plotted out in real time via chart recorders. These gizmos consisted of an overhead ink pen tip touching a rather long scroll of graph paper loaded into them.}

You should now be able to understand the importance of maintaining proper pre-ramp conditions. The ramping process depends on the operation of many valves to maintain proper pressures and temperatures throughout the system for safe and efficient startups. A timely and orderly startup from bypass to ramping requires complete understanding of the operation of each valve and its function with the boiler cycle.

------------------------------------------------- 21 ------------------------------------------------------

#ramping #boilermanual #page21 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 18:44 UTC

Again, the major problem with this ramp was the failure to establish proper pre-ramp conditions at the CP and PSH outlets. Had the proper temperatures been established and the boiler stable, the 207 valve would have been far enough open to compensate for the initial opening of the 201 valves and PSH outlet temperature would not have dropped. The resultant overfiring early in the ramp to raise that temperature could have been avoided.

The overfiring at the end of the ramp could also have been avoided if the firing rte had been reduced rather than increased, as the increasing CP and PSH temperatures indicated it should have been. Graphs in the control room of the proper firing rate, MW, and throttle pressure for each boiler master position certainly would have helped in avoiding this problem. {Such graphs were found in the control room at Baldwin for each unit, plotted out in real time via chart recorders. These gizmos consisted of an overhead ink pen tip touching a rather long scroll of graph paper loaded into them.}

You should now be able to understand the importance of maintaining proper pre-ramp conditions. The ramping process depends on the operation of many valves to maintain proper pressures and temperatures throughout the system for safe and efficient startups. A timely and orderly startup from bypass to ramping requires complete understanding of the operation of each valve and its function with the boiler cycle.

------------------------------------------------- 21 ------------------------------------------------------

#section8 #page21 #boilermanual #ramping

Radio Free Trumpistan @[email protected] · 2026-06-16 · 18:44 UTC

Again, the major problem with this ramp was the failure to establish proper pre-ramp conditions at the CP and PSH outlets. Had the proper temperatures been established and the boiler stable, the 207 valve would have been far enough open to compensate for the initial opening of the 201 valves and PSH outlet temperature would not have dropped. The resultant overfiring early in the ramp to raise that temperature could have been avoided.

The overfiring at the end of the ramp could also have been avoided if the firing rte had been reduced rather than increased, as the increasing CP and PSH temperatures indicated it should have been. Graphs in the control room of the proper firing rate, MW, and throttle pressure for each boiler master position certainly would have helped in avoiding this problem. {Such graphs were found in the control room at Baldwin for each unit, plotted out in real time via chart recorders. These gizmos consisted of an overhead ink pen tip touching a rather long scroll of graph paper loaded into them.}

You should now be able to understand the importance of maintaining proper pre-ramp conditions. The ramping process depends on the operation of many valves to maintain proper pressures and temperatures throughout the system for safe and efficient startups. A timely and orderly startup from bypass to ramping requires complete understanding of the operation of each valve and its function with the boiler cycle.

------------------------------------------------- 21 ------------------------------------------------------

#ramping #boilermanual #page21 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 18:39 UTC

------------------------------------------------- 20 ------------------------------------------------------
Alt = Simply labeled Fig. 9, but the title at the top reads EXAMPLE: INCORRECT PRE-RAMP CONDITIONS. Like Fig. 6, this is a set of 3 charts with the x axis markings in common.

The y axis on the top chart is marked Valve position --%; it's set in increments of 20, and plot lines for, top down order, 202 valve, 201 valve, then to the left bottom the 207 valve and to the right bottom, the 2000 valve.

The middle chart's y axis is marked thrice over, first in terms of Boiler and firing rate master % next to the axis, incremented by 5s up to 20 and then an unmarked line across; to the left is marked corresponding Megawatts, in increments of 20s; further to the left of that is marked Throttle pressure, in corresponding terms from 500 to 2500 in increments. The lines appear intertwined but are distinguished from each other by type of line drawn.

Firing rate is drawn with alternating dashes and dots; Boiler master is short dashes; MW line is solid but appears intertwined with Boiler master. The lowest line is by itself, in a solid line, marked Throttle pressure.

The bottom chart's y axis is marked twice over, first as Convection pass and PSH outlet temperature, from 620 to 800 incremented in 20s; correspondingly marked to the left of that as SSH outlet temperature, from 800 to 1050 in increments of 50. The lines, in top down order, are PSH (drawn as an alternating dash dot line), SSH (drawn as a solid line), and Convection pass (drawn as a line of short dashes). What's going on is explained in detail by the main text.

#ramping #boilermanual #page20 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 18:39 UTC

------------------------------------------------- 20 ------------------------------------------------------
Alt = Simply labeled Fig. 9, but the title at the top reads EXAMPLE: INCORRECT PRE-RAMP CONDITIONS. Like Fig. 6, this is a set of 3 charts with the x axis markings in common.

The y axis on the top chart is marked Valve position --%; it's set in increments of 20, and plot lines for, top down order, 202 valve, 201 valve, then to the left bottom the 207 valve and to the right bottom, the 2000 valve.

The middle chart's y axis is marked thrice over, first in terms of Boiler and firing rate master % next to the axis, incremented by 5s up to 20 and then an unmarked line across; to the left is marked corresponding Megawatts, in increments of 20s; further to the left of that is marked Throttle pressure, in corresponding terms from 500 to 2500 in increments. The lines appear intertwined but are distinguished from each other by type of line drawn.

Firing rate is drawn with alternating dashes and dots; Boiler master is short dashes; MW line is solid but appears intertwined with Boiler master. The lowest line is by itself, in a solid line, marked Throttle pressure.

The bottom chart's y axis is marked twice over, first as Convection pass and PSH outlet temperature, from 620 to 800 incremented in 20s; correspondingly marked to the left of that as SSH outlet temperature, from 800 to 1050 in increments of 50. The lines, in top down order, are PSH (drawn as an alternating dash dot line), SSH (drawn as a solid line), and Convection pass (drawn as a line of short dashes). What's going on is explained in detail by the main text.

#ramping #boilermanual #page20 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 18:39 UTC

------------------------------------------------- 20 ------------------------------------------------------
Alt = Simply labeled Fig. 9, but the title at the top reads EXAMPLE: INCORRECT PRE-RAMP CONDITIONS. Like Fig. 6, this is a set of 3 charts with the x axis markings in common.

The y axis on the top chart is marked Valve position --%; it's set in increments of 20, and plot lines for, top down order, 202 valve, 201 valve, then to the left bottom the 207 valve and to the right bottom, the 2000 valve.

The middle chart's y axis is marked thrice over, first in terms of Boiler and firing rate master % next to the axis, incremented by 5s up to 20 and then an unmarked line across; to the left is marked corresponding Megawatts, in increments of 20s; further to the left of that is marked Throttle pressure, in corresponding terms from 500 to 2500 in increments. The lines appear intertwined but are distinguished from each other by type of line drawn.

Firing rate is drawn with alternating dashes and dots; Boiler master is short dashes; MW line is solid but appears intertwined with Boiler master. The lowest line is by itself, in a solid line, marked Throttle pressure.

The bottom chart's y axis is marked twice over, first as Convection pass and PSH outlet temperature, from 620 to 800 incremented in 20s; correspondingly marked to the left of that as SSH outlet temperature, from 800 to 1050 in increments of 50. The lines, in top down order, are PSH (drawn as an alternating dash dot line), SSH (drawn as a solid line), and Convection pass (drawn as a line of short dashes). What's going on is explained in detail by the main text.

#ramping #boilermanual #page20 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 18:39 UTC

------------------------------------------------- 20 ------------------------------------------------------
Alt = Simply labeled Fig. 9, but the title at the top reads EXAMPLE: INCORRECT PRE-RAMP CONDITIONS. Like Fig. 6, this is a set of 3 charts with the x axis markings in common.

The y axis on the top chart is marked Valve position --%; it's set in increments of 20, and plot lines for, top down order, 202 valve, 201 valve, then to the left bottom the 207 valve and to the right bottom, the 2000 valve.

The middle chart's y axis is marked thrice over, first in terms of Boiler and firing rate master % next to the axis, incremented by 5s up to 20 and then an unmarked line across; to the left is marked corresponding Megawatts, in increments of 20s; further to the left of that is marked Throttle pressure, in corresponding terms from 500 to 2500 in increments. The lines appear intertwined but are distinguished from each other by type of line drawn.

Firing rate is drawn with alternating dashes and dots; Boiler master is short dashes; MW line is solid but appears intertwined with Boiler master. The lowest line is by itself, in a solid line, marked Throttle pressure.

The bottom chart's y axis is marked twice over, first as Convection pass and PSH outlet temperature, from 620 to 800 incremented in 20s; correspondingly marked to the left of that as SSH outlet temperature, from 800 to 1050 in increments of 50. The lines, in top down order, are PSH (drawn as an alternating dash dot line), SSH (drawn as a solid line), and Convection pass (drawn as a line of short dashes). What's going on is explained in detail by the main text.

#section8 #page20 #boilermanual #ramping

Radio Free Trumpistan @[email protected] · 2026-06-16 · 18:39 UTC

------------------------------------------------- 20 ------------------------------------------------------
Alt = Simply labeled Fig. 9, but the title at the top reads EXAMPLE: INCORRECT PRE-RAMP CONDITIONS. Like Fig. 6, this is a set of 3 charts with the x axis markings in common.

The y axis on the top chart is marked Valve position --%; it's set in increments of 20, and plot lines for, top down order, 202 valve, 201 valve, then to the left bottom the 207 valve and to the right bottom, the 2000 valve.

The middle chart's y axis is marked thrice over, first in terms of Boiler and firing rate master % next to the axis, incremented by 5s up to 20 and then an unmarked line across; to the left is marked corresponding Megawatts, in increments of 20s; further to the left of that is marked Throttle pressure, in corresponding terms from 500 to 2500 in increments. The lines appear intertwined but are distinguished from each other by type of line drawn.

Firing rate is drawn with alternating dashes and dots; Boiler master is short dashes; MW line is solid but appears intertwined with Boiler master. The lowest line is by itself, in a solid line, marked Throttle pressure.

The bottom chart's y axis is marked twice over, first as Convection pass and PSH outlet temperature, from 620 to 800 incremented in 20s; correspondingly marked to the left of that as SSH outlet temperature, from 800 to 1050 in increments of 50. The lines, in top down order, are PSH (drawn as an alternating dash dot line), SSH (drawn as a solid line), and Convection pass (drawn as a line of short dashes). What's going on is explained in detail by the main text.

#ramping #boilermanual #page20 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 17:03 UTC

data shown in Figure 9. There was no stabilization period, which in this case was badly needed.

Convection pass outlet and PSH outlet temperatures were too low to begin the ramp. Since both temperatures were low, the 207 valve was further closed than it normally would be had proper pre-ramp conditions been established.

The initial opening of the 201 valves drove the 207 valve completely closed. The 207 valve could not compensate for the increased flow through the 201 due to the low initial temperatures. This resulted in a flow increase when there should have been merely and exchange. Due to the increased flow, PSH temperature dropped sharply approximately 15 minutes into the ramp. This was aggravated by the fact that the increased flow was from low temperature convection pass steam. Firing rate was increased drastically to offset the low PSH temperature. Convection pass temperature rose sharply 20-25 minutes into the ramp. Furnace circuit temperatures were not taken, but it is possible they were in alarm at this point.

Firing rate was lowered to near normal at 25 minutes and the system began to stabilize. From about 30 minutes on, the pressure ramp was fairly smooth, as convection pass temperature was sufficiently high. 202 and 201 valve actions stabilized, while MW and throttle pressure increased smoothly.

Temperature control was still not good, however. Firing rate was erroneously increased from 50 to 70 minutes at a time when it should have been leveled off as shown by the dotted line. The rising CP outlet and PSH temperatures should have indicated that firing needed to be held steady rather than increased. Main steam, PSH and CP outlet temperatures all went dangerously high, and in all probability, so did furnace circuit temperatures.

------------------------------------------------- 19 ------------------------------------------------------

#ramping #boilermanual #page19 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 17:03 UTC

data shown in Figure 9. There was no stabilization period, which in this case was badly needed.

Convection pass outlet and PSH outlet temperatures were too low to begin the ramp. Since both temperatures were low, the 207 valve was further closed than it normally would be had proper pre-ramp conditions been established.

The initial opening of the 201 valves drove the 207 valve completely closed. The 207 valve could not compensate for the increased flow through the 201 due to the low initial temperatures. This resulted in a flow increase when there should have been merely and exchange. Due to the increased flow, PSH temperature dropped sharply approximately 15 minutes into the ramp. This was aggravated by the fact that the increased flow was from low temperature convection pass steam. Firing rate was increased drastically to offset the low PSH temperature. Convection pass temperature rose sharply 20-25 minutes into the ramp. Furnace circuit temperatures were not taken, but it is possible they were in alarm at this point.

Firing rate was lowered to near normal at 25 minutes and the system began to stabilize. From about 30 minutes on, the pressure ramp was fairly smooth, as convection pass temperature was sufficiently high. 202 and 201 valve actions stabilized, while MW and throttle pressure increased smoothly.

Temperature control was still not good, however. Firing rate was erroneously increased from 50 to 70 minutes at a time when it should have been leveled off as shown by the dotted line. The rising CP outlet and PSH temperatures should have indicated that firing needed to be held steady rather than increased. Main steam, PSH and CP outlet temperatures all went dangerously high, and in all probability, so did furnace circuit temperatures.

------------------------------------------------- 19 ------------------------------------------------------

#ramping #boilermanual #page19 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 17:03 UTC

data shown in Figure 9. There was no stabilization period, which in this case was badly needed.

Convection pass outlet and PSH outlet temperatures were too low to begin the ramp. Since both temperatures were low, the 207 valve was further closed than it normally would be had proper pre-ramp conditions been established.

The initial opening of the 201 valves drove the 207 valve completely closed. The 207 valve could not compensate for the increased flow through the 201 due to the low initial temperatures. This resulted in a flow increase when there should have been merely and exchange. Due to the increased flow, PSH temperature dropped sharply approximately 15 minutes into the ramp. This was aggravated by the fact that the increased flow was from low temperature convection pass steam. Firing rate was increased drastically to offset the low PSH temperature. Convection pass temperature rose sharply 20-25 minutes into the ramp. Furnace circuit temperatures were not taken, but it is possible they were in alarm at this point.

Firing rate was lowered to near normal at 25 minutes and the system began to stabilize. From about 30 minutes on, the pressure ramp was fairly smooth, as convection pass temperature was sufficiently high. 202 and 201 valve actions stabilized, while MW and throttle pressure increased smoothly.

Temperature control was still not good, however. Firing rate was erroneously increased from 50 to 70 minutes at a time when it should have been leveled off as shown by the dotted line. The rising CP outlet and PSH temperatures should have indicated that firing needed to be held steady rather than increased. Main steam, PSH and CP outlet temperatures all went dangerously high, and in all probability, so did furnace circuit temperatures.

------------------------------------------------- 19 ------------------------------------------------------

#ramping #boilermanual #page19 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 17:03 UTC

data shown in Figure 9. There was no stabilization period, which in this case was badly needed.

Convection pass outlet and PSH outlet temperatures were too low to begin the ramp. Since both temperatures were low, the 207 valve was further closed than it normally would be had proper pre-ramp conditions been established.

The initial opening of the 201 valves drove the 207 valve completely closed. The 207 valve could not compensate for the increased flow through the 201 due to the low initial temperatures. This resulted in a flow increase when there should have been merely and exchange. Due to the increased flow, PSH temperature dropped sharply approximately 15 minutes into the ramp. This was aggravated by the fact that the increased flow was from low temperature convection pass steam. Firing rate was increased drastically to offset the low PSH temperature. Convection pass temperature rose sharply 20-25 minutes into the ramp. Furnace circuit temperatures were not taken, but it is possible they were in alarm at this point.

Firing rate was lowered to near normal at 25 minutes and the system began to stabilize. From about 30 minutes on, the pressure ramp was fairly smooth, as convection pass temperature was sufficiently high. 202 and 201 valve actions stabilized, while MW and throttle pressure increased smoothly.

Temperature control was still not good, however. Firing rate was erroneously increased from 50 to 70 minutes at a time when it should have been leveled off as shown by the dotted line. The rising CP outlet and PSH temperatures should have indicated that firing needed to be held steady rather than increased. Main steam, PSH and CP outlet temperatures all went dangerously high, and in all probability, so did furnace circuit temperatures.

------------------------------------------------- 19 ------------------------------------------------------

#section8 #page19 #boilermanual #ramping

Radio Free Trumpistan @[email protected] · 2026-06-16 · 17:03 UTC

data shown in Figure 9. There was no stabilization period, which in this case was badly needed.

Convection pass outlet and PSH outlet temperatures were too low to begin the ramp. Since both temperatures were low, the 207 valve was further closed than it normally would be had proper pre-ramp conditions been established.

The initial opening of the 201 valves drove the 207 valve completely closed. The 207 valve could not compensate for the increased flow through the 201 due to the low initial temperatures. This resulted in a flow increase when there should have been merely and exchange. Due to the increased flow, PSH temperature dropped sharply approximately 15 minutes into the ramp. This was aggravated by the fact that the increased flow was from low temperature convection pass steam. Firing rate was increased drastically to offset the low PSH temperature. Convection pass temperature rose sharply 20-25 minutes into the ramp. Furnace circuit temperatures were not taken, but it is possible they were in alarm at this point.

Firing rate was lowered to near normal at 25 minutes and the system began to stabilize. From about 30 minutes on, the pressure ramp was fairly smooth, as convection pass temperature was sufficiently high. 202 and 201 valve actions stabilized, while MW and throttle pressure increased smoothly.

Temperature control was still not good, however. Firing rate was erroneously increased from 50 to 70 minutes at a time when it should have been leveled off as shown by the dotted line. The rising CP outlet and PSH temperatures should have indicated that firing needed to be held steady rather than increased. Main steam, PSH and CP outlet temperatures all went dangerously high, and in all probability, so did furnace circuit temperatures.

------------------------------------------------- 19 ------------------------------------------------------

#ramping #boilermanual #page19 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 16:55 UTC

As the ramp progresses, flow through the SSH is increased and flow to the flashtank is decreased. With the decreased flow to the flashtank, flow is also reduced to the FW heaters and the DA so feedwater temperature will decrease. When flashtank pressure has decayed sufficiently, the heaters and DA will go on extraction steam and the FW temperature will begin to increase by the end of the ramp. The flashtank is kept warm by an interconnection with the deaerator via the 236 valve. Flashtank pressure will float with DA pressure.

EXAMPLE OF A RAMP WITH INCORRECT PRE-RAMP CONDITIONS

The following discussion will indicate the importance of stabilizing the system prior to the initiation of the ramp. The ramp in our example was initiated immediately after the initial opening of the 201 valve for the

------------------------------------------------- 18 ------------------------------------------------------
Alt = Labeled Fig. 8 Temperatures during the ramp. It's a chart where only the x axis and the lines for the 201 and 200 are identical to the previous charts. The y axis is marked Degrees F and is arbitrarily incremented in different but ascending spots as 380, 655, 710, 925, 950 and 1000. The corresponding lines drawn from those are, in ascending order, Feedwater temp., Convection pass outlet temperature, PSH outlet temperature, SSH outlet temperature and Gas temperature. Where each of those lines cross the x axis points of B, C, D and E are drawn with vertical dashed lines.

#ramping #boilermanual #page18 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 16:55 UTC

As the ramp progresses, flow through the SSH is increased and flow to the flashtank is decreased. With the decreased flow to the flashtank, flow is also reduced to the FW heaters and the DA so feedwater temperature will decrease. When flashtank pressure has decayed sufficiently, the heaters and DA will go on extraction steam and the FW temperature will begin to increase by the end of the ramp. The flashtank is kept warm by an interconnection with the deaerator via the 236 valve. Flashtank pressure will float with DA pressure.

EXAMPLE OF A RAMP WITH INCORRECT PRE-RAMP CONDITIONS

The following discussion will indicate the importance of stabilizing the system prior to the initiation of the ramp. The ramp in our example was initiated immediately after the initial opening of the 201 valve for the

------------------------------------------------- 18 ------------------------------------------------------
Alt = Labeled Fig. 8 Temperatures during the ramp. It's a chart where only the x axis and the lines for the 201 and 200 are identical to the previous charts. The y axis is marked Degrees F and is arbitrarily incremented in different but ascending spots as 380, 655, 710, 925, 950 and 1000. The corresponding lines drawn from those are, in ascending order, Feedwater temp., Convection pass outlet temperature, PSH outlet temperature, SSH outlet temperature and Gas temperature. Where each of those lines cross the x axis points of B, C, D and E are drawn with vertical dashed lines.

#ramping #boilermanual #page18 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 16:55 UTC

As the ramp progresses, flow through the SSH is increased and flow to the flashtank is decreased. With the decreased flow to the flashtank, flow is also reduced to the FW heaters and the DA so feedwater temperature will decrease. When flashtank pressure has decayed sufficiently, the heaters and DA will go on extraction steam and the FW temperature will begin to increase by the end of the ramp. The flashtank is kept warm by an interconnection with the deaerator via the 236 valve. Flashtank pressure will float with DA pressure.

EXAMPLE OF A RAMP WITH INCORRECT PRE-RAMP CONDITIONS

The following discussion will indicate the importance of stabilizing the system prior to the initiation of the ramp. The ramp in our example was initiated immediately after the initial opening of the 201 valve for the

------------------------------------------------- 18 ------------------------------------------------------
Alt = Labeled Fig. 8 Temperatures during the ramp. It's a chart where only the x axis and the lines for the 201 and 200 are identical to the previous charts. The y axis is marked Degrees F and is arbitrarily incremented in different but ascending spots as 380, 655, 710, 925, 950 and 1000. The corresponding lines drawn from those are, in ascending order, Feedwater temp., Convection pass outlet temperature, PSH outlet temperature, SSH outlet temperature and Gas temperature. Where each of those lines cross the x axis points of B, C, D and E are drawn with vertical dashed lines.

#ramping #boilermanual #page18 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 16:55 UTC

As the ramp progresses, flow through the SSH is increased and flow to the flashtank is decreased. With the decreased flow to the flashtank, flow is also reduced to the FW heaters and the DA so feedwater temperature will decrease. When flashtank pressure has decayed sufficiently, the heaters and DA will go on extraction steam and the FW temperature will begin to increase by the end of the ramp. The flashtank is kept warm by an interconnection with the deaerator via the 236 valve. Flashtank pressure will float with DA pressure.

EXAMPLE OF A RAMP WITH INCORRECT PRE-RAMP CONDITIONS

The following discussion will indicate the importance of stabilizing the system prior to the initiation of the ramp. The ramp in our example was initiated immediately after the initial opening of the 201 valve for the

------------------------------------------------- 18 ------------------------------------------------------
Alt = Labeled Fig. 8 Temperatures during the ramp. It's a chart where only the x axis and the lines for the 201 and 200 are identical to the previous charts. The y axis is marked Degrees F and is arbitrarily incremented in different but ascending spots as 380, 655, 710, 925, 950 and 1000. The corresponding lines drawn from those are, in ascending order, Feedwater temp., Convection pass outlet temperature, PSH outlet temperature, SSH outlet temperature and Gas temperature. Where each of those lines cross the x axis points of B, C, D and E are drawn with vertical dashed lines.

#section8 #page18 #boilermanual #ramping

Radio Free Trumpistan @[email protected] · 2026-06-16 · 16:55 UTC

As the ramp progresses, flow through the SSH is increased and flow to the flashtank is decreased. With the decreased flow to the flashtank, flow is also reduced to the FW heaters and the DA so feedwater temperature will decrease. When flashtank pressure has decayed sufficiently, the heaters and DA will go on extraction steam and the FW temperature will begin to increase by the end of the ramp. The flashtank is kept warm by an interconnection with the deaerator via the 236 valve. Flashtank pressure will float with DA pressure.

EXAMPLE OF A RAMP WITH INCORRECT PRE-RAMP CONDITIONS

The following discussion will indicate the importance of stabilizing the system prior to the initiation of the ramp. The ramp in our example was initiated immediately after the initial opening of the 201 valve for the

------------------------------------------------- 18 ------------------------------------------------------
Alt = Labeled Fig. 8 Temperatures during the ramp. It's a chart where only the x axis and the lines for the 201 and 200 are identical to the previous charts. The y axis is marked Degrees F and is arbitrarily incremented in different but ascending spots as 380, 655, 710, 925, 950 and 1000. The corresponding lines drawn from those are, in ascending order, Feedwater temp., Convection pass outlet temperature, PSH outlet temperature, SSH outlet temperature and Gas temperature. Where each of those lines cross the x axis points of B, C, D and E are drawn with vertical dashed lines.

#ramping #boilermanual #page18 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 16:42 UTC

If for some reason the ramp must be interrupted, the MW demand station can be lowered to match the MW demand thus, stopping the gradual ramped increase in load demand. When the ramp must be stopped, firing rate may have to be manually lowered to near its steady state value, as shown at point X on Figure 7. (Note that for any given steam flow there is only one firing rate which will maintain the correct steam temperature and flow). When the ramp is resumed by raising the MW demand station to 33% of full load firing rate should again be increased.

The curve for the de-ramp is also shown in Figure 7. When de-ramping the unit, firing rate must be below its normal steady state value. Heat stored in the boiler tube metals would tend to make steam temperatures high if the normal steady state firing program was followed.

Plots of several of the more important temperatures are shown in Figure 8. All should be allowed to stabilize at the correct values prior to the initial opening of the 201 at point B. There should be very little change between point B and the initiation of the ramp at point
C.

Gas temperature should increase steadily from point C as firing rate is increased. The thermoprobes will retract when gas temperature reaches approximately 1200 F. At this point firing rate control is based on actual steam temperature. SSH outlet temperature should steadily increase from its initial value to final steam temperature at the end of the ramp.

Both PSH outlet and convection pass outlet temperatures should be relatively constant throughout the ramp and should be used as guides for alteration of the firing rate. Sharp changes in either temperature indicate the need for manual adjustment. Of course, PSH outlet temperature can only be used as an indication of firing rate after the 207 valve is completely closed.

------------------------------------------------- 17 ------------------------------------------------------

#ramping #boilermanual #page17 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 16:42 UTC

If for some reason the ramp must be interrupted, the MW demand station can be lowered to match the MW demand thus, stopping the gradual ramped increase in load demand. When the ramp must be stopped, firing rate may have to be manually lowered to near its steady state value, as shown at point X on Figure 7. (Note that for any given steam flow there is only one firing rate which will maintain the correct steam temperature and flow). When the ramp is resumed by raising the MW demand station to 33% of full load firing rate should again be increased.

The curve for the de-ramp is also shown in Figure 7. When de-ramping the unit, firing rate must be below its normal steady state value. Heat stored in the boiler tube metals would tend to make steam temperatures high if the normal steady state firing program was followed.

Plots of several of the more important temperatures are shown in Figure 8. All should be allowed to stabilize at the correct values prior to the initial opening of the 201 at point B. There should be very little change between point B and the initiation of the ramp at point
C.

Gas temperature should increase steadily from point C as firing rate is increased. The thermoprobes will retract when gas temperature reaches approximately 1200 F. At this point firing rate control is based on actual steam temperature. SSH outlet temperature should steadily increase from its initial value to final steam temperature at the end of the ramp.

Both PSH outlet and convection pass outlet temperatures should be relatively constant throughout the ramp and should be used as guides for alteration of the firing rate. Sharp changes in either temperature indicate the need for manual adjustment. Of course, PSH outlet temperature can only be used as an indication of firing rate after the 207 valve is completely closed.

------------------------------------------------- 17 ------------------------------------------------------

#ramping #boilermanual #page17 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 16:42 UTC

If for some reason the ramp must be interrupted, the MW demand station can be lowered to match the MW demand thus, stopping the gradual ramped increase in load demand. When the ramp must be stopped, firing rate may have to be manually lowered to near its steady state value, as shown at point X on Figure 7. (Note that for any given steam flow there is only one firing rate which will maintain the correct steam temperature and flow). When the ramp is resumed by raising the MW demand station to 33% of full load firing rate should again be increased.

The curve for the de-ramp is also shown in Figure 7. When de-ramping the unit, firing rate must be below its normal steady state value. Heat stored in the boiler tube metals would tend to make steam temperatures high if the normal steady state firing program was followed.

Plots of several of the more important temperatures are shown in Figure 8. All should be allowed to stabilize at the correct values prior to the initial opening of the 201 at point B. There should be very little change between point B and the initiation of the ramp at point
C.

Gas temperature should increase steadily from point C as firing rate is increased. The thermoprobes will retract when gas temperature reaches approximately 1200 F. At this point firing rate control is based on actual steam temperature. SSH outlet temperature should steadily increase from its initial value to final steam temperature at the end of the ramp.

Both PSH outlet and convection pass outlet temperatures should be relatively constant throughout the ramp and should be used as guides for alteration of the firing rate. Sharp changes in either temperature indicate the need for manual adjustment. Of course, PSH outlet temperature can only be used as an indication of firing rate after the 207 valve is completely closed.

------------------------------------------------- 17 ------------------------------------------------------

#ramping #boilermanual #page17 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 16:42 UTC

If for some reason the ramp must be interrupted, the MW demand station can be lowered to match the MW demand thus, stopping the gradual ramped increase in load demand. When the ramp must be stopped, firing rate may have to be manually lowered to near its steady state value, as shown at point X on Figure 7. (Note that for any given steam flow there is only one firing rate which will maintain the correct steam temperature and flow). When the ramp is resumed by raising the MW demand station to 33% of full load firing rate should again be increased.

The curve for the de-ramp is also shown in Figure 7. When de-ramping the unit, firing rate must be below its normal steady state value. Heat stored in the boiler tube metals would tend to make steam temperatures high if the normal steady state firing program was followed.

Plots of several of the more important temperatures are shown in Figure 8. All should be allowed to stabilize at the correct values prior to the initial opening of the 201 at point B. There should be very little change between point B and the initiation of the ramp at point
C.

Gas temperature should increase steadily from point C as firing rate is increased. The thermoprobes will retract when gas temperature reaches approximately 1200 F. At this point firing rate control is based on actual steam temperature. SSH outlet temperature should steadily increase from its initial value to final steam temperature at the end of the ramp.

Both PSH outlet and convection pass outlet temperatures should be relatively constant throughout the ramp and should be used as guides for alteration of the firing rate. Sharp changes in either temperature indicate the need for manual adjustment. Of course, PSH outlet temperature can only be used as an indication of firing rate after the 207 valve is completely closed.

------------------------------------------------- 17 ------------------------------------------------------

#section8 #page17 #boilermanual #ramping

Radio Free Trumpistan @[email protected] · 2026-06-16 · 16:42 UTC

If for some reason the ramp must be interrupted, the MW demand station can be lowered to match the MW demand thus, stopping the gradual ramped increase in load demand. When the ramp must be stopped, firing rate may have to be manually lowered to near its steady state value, as shown at point X on Figure 7. (Note that for any given steam flow there is only one firing rate which will maintain the correct steam temperature and flow). When the ramp is resumed by raising the MW demand station to 33% of full load firing rate should again be increased.

The curve for the de-ramp is also shown in Figure 7. When de-ramping the unit, firing rate must be below its normal steady state value. Heat stored in the boiler tube metals would tend to make steam temperatures high if the normal steady state firing program was followed.

Plots of several of the more important temperatures are shown in Figure 8. All should be allowed to stabilize at the correct values prior to the initial opening of the 201 at point B. There should be very little change between point B and the initiation of the ramp at point
C.

Gas temperature should increase steadily from point C as firing rate is increased. The thermoprobes will retract when gas temperature reaches approximately 1200 F. At this point firing rate control is based on actual steam temperature. SSH outlet temperature should steadily increase from its initial value to final steam temperature at the end of the ramp.

Both PSH outlet and convection pass outlet temperatures should be relatively constant throughout the ramp and should be used as guides for alteration of the firing rate. Sharp changes in either temperature indicate the need for manual adjustment. Of course, PSH outlet temperature can only be used as an indication of firing rate after the 207 valve is completely closed.

------------------------------------------------- 17 ------------------------------------------------------

#ramping #boilermanual #page17 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 16:30 UTC

based on flue gas temperature during most of the ramp, then on actual main steam temperature after the gas temperature probes retract.

A typical plot of firing rte is shown in Figure 7. The system is allowed to stabilize from points A to B. At point B, after steady state conditions are reached, the turbine load is manually increased causing thte 201 valve to begin opening. At point C, the turbine is automated and the MW demand station increased, initiating the ramp.

Notice that from point C to the end of the ramp at point E, there are three curves for firing rate.

During a continuous ramp, the system never reaches steady state. This means there is a continuous demand for steam flow and firing rate is being increased at this time. Because the steam flow changes faster than firing rate can change, a drop would develop in steam temperature if corrective measures were not taken. To account for this drop, the firing rate for a continuous ramp must be increased above that required to sustain a steady state condition, as shown by the actual firing rate curve.

------------------------------------------------- 16 ------------------------------------------------------
Alt = Labeled Fig.7 Firing rate during ramp. Similar to the previous charts with the same lines for valves 201 and 200 marked. Above those lines is a line similar to the 6A and 6B in Fig. 6, marked Boiler master and Megawatts respectively, at the far left of the chart, but at point C of the x axis, the line diverges into 3 branches, converging again at point E. The top one is a solid line with an arrow pointing rightward, marked Actual firing rate. The middle line is made of short dashes, with an arrow pointing rightward, marked Interrupted ramp. The bottom line is made of long dashes with an arrow pointing leftward, marked Deramp, and it has a vertical dashed line dropping down from its middle to the x axis at a point preceding point D, marked X.

#ramping #boilermanual #page16 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 16:30 UTC

based on flue gas temperature during most of the ramp, then on actual main steam temperature after the gas temperature probes retract.

A typical plot of firing rte is shown in Figure 7. The system is allowed to stabilize from points A to B. At point B, after steady state conditions are reached, the turbine load is manually increased causing thte 201 valve to begin opening. At point C, the turbine is automated and the MW demand station increased, initiating the ramp.

Notice that from point C to the end of the ramp at point E, there are three curves for firing rate.

During a continuous ramp, the system never reaches steady state. This means there is a continuous demand for steam flow and firing rate is being increased at this time. Because the steam flow changes faster than firing rate can change, a drop would develop in steam temperature if corrective measures were not taken. To account for this drop, the firing rate for a continuous ramp must be increased above that required to sustain a steady state condition, as shown by the actual firing rate curve.

------------------------------------------------- 16 ------------------------------------------------------
Alt = Labeled Fig.7 Firing rate during ramp. Similar to the previous charts with the same lines for valves 201 and 200 marked. Above those lines is a line similar to the 6A and 6B in Fig. 6, marked Boiler master and Megawatts respectively, at the far left of the chart, but at point C of the x axis, the line diverges into 3 branches, converging again at point E. The top one is a solid line with an arrow pointing rightward, marked Actual firing rate. The middle line is made of short dashes, with an arrow pointing rightward, marked Interrupted ramp. The bottom line is made of long dashes with an arrow pointing leftward, marked Deramp, and it has a vertical dashed line dropping down from its middle to the x axis at a point preceding point D, marked X.

#ramping #boilermanual #page16 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 16:30 UTC

based on flue gas temperature during most of the ramp, then on actual main steam temperature after the gas temperature probes retract.

A typical plot of firing rte is shown in Figure 7. The system is allowed to stabilize from points A to B. At point B, after steady state conditions are reached, the turbine load is manually increased causing thte 201 valve to begin opening. At point C, the turbine is automated and the MW demand station increased, initiating the ramp.

Notice that from point C to the end of the ramp at point E, there are three curves for firing rate.

During a continuous ramp, the system never reaches steady state. This means there is a continuous demand for steam flow and firing rate is being increased at this time. Because the steam flow changes faster than firing rate can change, a drop would develop in steam temperature if corrective measures were not taken. To account for this drop, the firing rate for a continuous ramp must be increased above that required to sustain a steady state condition, as shown by the actual firing rate curve.

------------------------------------------------- 16 ------------------------------------------------------
Alt = Labeled Fig.7 Firing rate during ramp. Similar to the previous charts with the same lines for valves 201 and 200 marked. Above those lines is a line similar to the 6A and 6B in Fig. 6, marked Boiler master and Megawatts respectively, at the far left of the chart, but at point C of the x axis, the line diverges into 3 branches, converging again at point E. The top one is a solid line with an arrow pointing rightward, marked Actual firing rate. The middle line is made of short dashes, with an arrow pointing rightward, marked Interrupted ramp. The bottom line is made of long dashes with an arrow pointing leftward, marked Deramp, and it has a vertical dashed line dropping down from its middle to the x axis at a point preceding point D, marked X.

#ramping #boilermanual #page16 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 16:30 UTC

based on flue gas temperature during most of the ramp, then on actual main steam temperature after the gas temperature probes retract.

A typical plot of firing rte is shown in Figure 7. The system is allowed to stabilize from points A to B. At point B, after steady state conditions are reached, the turbine load is manually increased causing thte 201 valve to begin opening. At point C, the turbine is automated and the MW demand station increased, initiating the ramp.

Notice that from point C to the end of the ramp at point E, there are three curves for firing rate.

During a continuous ramp, the system never reaches steady state. This means there is a continuous demand for steam flow and firing rate is being increased at this time. Because the steam flow changes faster than firing rate can change, a drop would develop in steam temperature if corrective measures were not taken. To account for this drop, the firing rate for a continuous ramp must be increased above that required to sustain a steady state condition, as shown by the actual firing rate curve.

------------------------------------------------- 16 ------------------------------------------------------
Alt = Labeled Fig.7 Firing rate during ramp. Similar to the previous charts with the same lines for valves 201 and 200 marked. Above those lines is a line similar to the 6A and 6B in Fig. 6, marked Boiler master and Megawatts respectively, at the far left of the chart, but at point C of the x axis, the line diverges into 3 branches, converging again at point E. The top one is a solid line with an arrow pointing rightward, marked Actual firing rate. The middle line is made of short dashes, with an arrow pointing rightward, marked Interrupted ramp. The bottom line is made of long dashes with an arrow pointing leftward, marked Deramp, and it has a vertical dashed line dropping down from its middle to the x axis at a point preceding point D, marked X.

#section8 #page16 #boilermanual #ramping

Radio Free Trumpistan @[email protected] · 2026-06-16 · 16:30 UTC

based on flue gas temperature during most of the ramp, then on actual main steam temperature after the gas temperature probes retract.

A typical plot of firing rte is shown in Figure 7. The system is allowed to stabilize from points A to B. At point B, after steady state conditions are reached, the turbine load is manually increased causing thte 201 valve to begin opening. At point C, the turbine is automated and the MW demand station increased, initiating the ramp.

Notice that from point C to the end of the ramp at point E, there are three curves for firing rate.

During a continuous ramp, the system never reaches steady state. This means there is a continuous demand for steam flow and firing rate is being increased at this time. Because the steam flow changes faster than firing rate can change, a drop would develop in steam temperature if corrective measures were not taken. To account for this drop, the firing rate for a continuous ramp must be increased above that required to sustain a steady state condition, as shown by the actual firing rate curve.

------------------------------------------------- 16 ------------------------------------------------------
Alt = Labeled Fig.7 Firing rate during ramp. Similar to the previous charts with the same lines for valves 201 and 200 marked. Above those lines is a line similar to the 6A and 6B in Fig. 6, marked Boiler master and Megawatts respectively, at the far left of the chart, but at point C of the x axis, the line diverges into 3 branches, converging again at point E. The top one is a solid line with an arrow pointing rightward, marked Actual firing rate. The middle line is made of short dashes, with an arrow pointing rightward, marked Interrupted ramp. The bottom line is made of long dashes with an arrow pointing leftward, marked Deramp, and it has a vertical dashed line dropping down from its middle to the x axis at a point preceding point D, marked X.

#ramping #boilermanual #page16 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 04:19 UTC

increased flow would drop PSH outlet temperature, so the 207 valve is driven closed a proportionate amount in an effort to maintain a constant flow and therefore temperature though the PSH. The amount of 207 valve closure is based on the ratio of 201 to 207 valve port areas. As the total 201valve port area increases, the 207 valve port area must be decreased an equal amount. The initial opening of the 201 and closing of the 207 should provide an even flow exchange. The 202 valve should not have to move significantly to maintain boiler pressure.

Between points B and C, the 201 and 207 valves should stabilize in partially open positions (the 207 valve opening will vary slightly depending on firing rate).

At point C, as the 201 valves are ramped open, the 207 will begin to close entirely. As flow to the turbine is increased, the 202 will close off gradually. Flow to the flashtank will decrease as it maintains boiler pressure. The 202 valves will close entirely with the opening of the 200 valves, taking the entire system off of the bypass.

While the 205 valve has not been shown in Figure 6C, its operation should be mentioned. The 205 valve is a non-return valve. When throttle pressure increases above flashtank pressure, shortly after point C, the 205 valve will close and all steam flow willl be through the 201 valves. Flow to the flashtank through the 202 will he distributed to the feedwater heaters, deaerator and condenser.

STEAM TEMPERATURE CONTROL DURING RAMP

So far we have discussed the bypass system valve operation and the controll of pressure and flow during the ramp. The other major area of concern is the control of steam temperatures. Steam temperature control is achieved by adjustment of the firing rate. The adjustment is

------------------------------------------------- 15 ------------------------------------------------------

#ramping #boilermanual #page15 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 04:19 UTC

increased flow would drop PSH outlet temperature, so the 207 valve is driven closed a proportionate amount in an effort to maintain a constant flow and therefore temperature though the PSH. The amount of 207 valve closure is based on the ratio of 201 to 207 valve port areas. As the total 201valve port area increases, the 207 valve port area must be decreased an equal amount. The initial opening of the 201 and closing of the 207 should provide an even flow exchange. The 202 valve should not have to move significantly to maintain boiler pressure.

Between points B and C, the 201 and 207 valves should stabilize in partially open positions (the 207 valve opening will vary slightly depending on firing rate).

At point C, as the 201 valves are ramped open, the 207 will begin to close entirely. As flow to the turbine is increased, the 202 will close off gradually. Flow to the flashtank will decrease as it maintains boiler pressure. The 202 valves will close entirely with the opening of the 200 valves, taking the entire system off of the bypass.

While the 205 valve has not been shown in Figure 6C, its operation should be mentioned. The 205 valve is a non-return valve. When throttle pressure increases above flashtank pressure, shortly after point C, the 205 valve will close and all steam flow willl be through the 201 valves. Flow to the flashtank through the 202 will he distributed to the feedwater heaters, deaerator and condenser.

STEAM TEMPERATURE CONTROL DURING RAMP

So far we have discussed the bypass system valve operation and the controll of pressure and flow during the ramp. The other major area of concern is the control of steam temperatures. Steam temperature control is achieved by adjustment of the firing rate. The adjustment is

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#ramping #boilermanual #page15 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 04:19 UTC

increased flow would drop PSH outlet temperature, so the 207 valve is driven closed a proportionate amount in an effort to maintain a constant flow and therefore temperature though the PSH. The amount of 207 valve closure is based on the ratio of 201 to 207 valve port areas. As the total 201valve port area increases, the 207 valve port area must be decreased an equal amount. The initial opening of the 201 and closing of the 207 should provide an even flow exchange. The 202 valve should not have to move significantly to maintain boiler pressure.

Between points B and C, the 201 and 207 valves should stabilize in partially open positions (the 207 valve opening will vary slightly depending on firing rate).

At point C, as the 201 valves are ramped open, the 207 will begin to close entirely. As flow to the turbine is increased, the 202 will close off gradually. Flow to the flashtank will decrease as it maintains boiler pressure. The 202 valves will close entirely with the opening of the 200 valves, taking the entire system off of the bypass.

While the 205 valve has not been shown in Figure 6C, its operation should be mentioned. The 205 valve is a non-return valve. When throttle pressure increases above flashtank pressure, shortly after point C, the 205 valve will close and all steam flow willl be through the 201 valves. Flow to the flashtank through the 202 will he distributed to the feedwater heaters, deaerator and condenser.

STEAM TEMPERATURE CONTROL DURING RAMP

So far we have discussed the bypass system valve operation and the controll of pressure and flow during the ramp. The other major area of concern is the control of steam temperatures. Steam temperature control is achieved by adjustment of the firing rate. The adjustment is

------------------------------------------------- 15 ------------------------------------------------------

#ramping #boilermanual #page15 #section8

Radio Free Trumpistan @[email protected] · 2026-06-16 · 04:19 UTC