Steam Turbine Generator Condenser To Stack Heat Recovery Boiler Turbine Generator Exhaust Gas Air Compressor Fuel Combustor (Peak Electricity) Heat From Reactor (Base Load Electricity) •Normal power systems are slow to speed up •Very rapid response for spinning reserve and frequency control − Nuclear heats air above the fuel auto-ignition
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The water then flashes to steam which expands 1600 times its volume as water and causes the explosion because there is not enough room for the steam to expand. 3. Combustion explosions . These can be a result of gases which build up and an ignition source ignites the gases. This can happen inside the boiler or outside.
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For example, a steam drum that is operating at normal water level has the bottom half of the drum cooled by water and the top half by air initially and steam eventually. If one starts to fire the boiler from a cold start, the water will heat up very quickly in the drum and the bottom half of the drum will expand much more quickly than the top
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The steam plants have high temperature piping that can provide possible ignition and reignition sources. Further, these pipes are slow to cool. While turbine and diesel propulsion plants have high temperature surfaces, these cool much faster. Unvented high pressure steam remains in the steam plant piping after boiler shut down.
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Hold the temperature inside the wall tubes or steam drum for a period of 1 hour for every inch of the thickest refractory area required to be dried on the outside of the boiler (e.g., the largest wall box may have a depth of 5 in., requiring a hold time of 5 hours). Raise the water temperature inside the wall tubes or steam drum 75ºF per hour
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Dec 27, 2018 · Poor water quality can severely damage your boiler system. Minerals, like calcium and others, in the water can accumulate in the boiler and pipes as scale deposits. These deposits can slow the passage of steam through the system or block it entirely. In fact, scale is the most significant contributor to efficiency loss in your steam boiler system.
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Steam Accumulators and Steam Boiler Response to Load Changes C. Merritt, Fulton Thermal Corp. the burner ignition sequence is a little more complicated than just turning a valve on pounds of extra steam will slow down the depressurization rate of the boiler and help mitigate
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Steam engines are the most basic electricity generator, available to the player at the start of the game. They produce electricity by consuming steam, using water pumped from an offshore pump that was heated to 165°C steam with boilers or to 500°C steam with heat exchangers. Steam that has a higher temperature than the maximum temperature of the steam engine (165°C) is consumed at the
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used to collect the steam exiting the turbine, feeding it into the boiler and completing the cycle. There are several different types of steam turbines: 1) A condensing steam turbine as shown in Figure 6-1 is for power-only applications and expands the pressurized steam to low pressure at which point a steam/liquid
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Hold the temperature inside the wall tubes or steam drum for a period of 1 hour for every inch of the thickest refractory area required to be dried on the outside of the boiler (e.g., the largest wall box may have a depth of 5 in., requiring a hold time of 5 hours). Raise the water temperature inside the wall tubes or steam drum 75ºF per hour
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