PWR Plant Builder
Builds the whole set of equipment inside the containment (4 loops): the reactor vessel (with shielding glass windows), 4 steam generators, 4 reactor coolant pumps, the pressurizer, the volume control tank, the boric acid batching tank, the main control panel with the station power panel, and the primary coolant piping. When it is finished, chat tells you where the pipe outlets (main steam and feedwater) come out of the front wall and where the main control panel is. Fuel assemblies and boric acid (powder) aren't included: load them yourself. Sneak and right-click to read about the team mission crews. The Machine Maker sells it with the turbine-generator and transformer/switchyard builders as a PWR plant (400 kW).
- Where to buy
- Machine Maker 160,000,000 yen, a PWR plant (3 builders) (half with the subsidy)
Reactor vessel (Reactor Vessel, shell, corner, bottom head, head, rounded shell)
6 kindsAn upright cylindrical vessel where uranium fission heats the primary water (without boiling it). The Reactor Vessel block is the center of the plant: right-click it with an empty hand to see the primary pressure and temperature. The shell is steel about 26 cm thick, and the bottom head is the hemispherical bottom (the in-core instrument guide tubes come out the bottom here, a shape unique to PWRs). The control rod drive mechanisms stand on the head. Breaking part of the vessel during operation counts as a loss of coolant and causes an emergency shutdown.
See data for 6 kinds
Reactor Vessel
Reactor Vessel Shell
Reactor Vessel Corner
Reactor Vessel Bottom Head
Reactor Vessel Head
Vessel Shell (Rounded)Shielding Glass and Inspection Window Glass
2 kindsShielding glass is a viewing window that blocks radiation while letting you see the core (in a real plant, thick glass with lead in it). The builder opens a window in the middle of each side of the reactor, so you can see the height of the fuel assemblies and the control rod clusters. Inspection window glass is a window for seeing inside equipment.
See data for 2 kinds
Shielding Glass
Inspection Window GlassFuel Assembly (PWR)
A column of fuel rods bundled in a 17 x 17 grid that gives off the heat of fission (a real plant lines up 193 columns about 4 m tall). With it in your inventory, press "Load fuel (crane)" on the main control panel: one loads 9 assemblies' worth (2 levels of the core). Two loads make 18 = full, and the head closes automatically.
Control Rod Cluster and Control Rod Drive Mechanism (2-block set)
2 kindsThe rod cluster hangs thin rods like spider legs and inserts them into the core from above (different from the BWR's cross-shaped control rods, and inserted the opposite way). The control rod drive mechanism is a tube standing on the head; a magnetic jack moves the drive shaft inside up and down one step at a time by re-gripping it. In an emergency shutdown the magnets are released and the rods drop all at once under their own weight. Placing one gives you 2 blocks.
See data for 2 kinds
Control Rod Cluster
Control Rod Drive Mechanism (2-block set)In-core Instrument Guide Tube and Primary Coolant
2 kindsThe in-core instrument guide tube measures uneven power in the core from below (in a PWR the control rods enter from above, so the bottom is free for this shape). Primary coolant is the water in the reactor vessel. It is pressurized to 155 bar, so it doesn't boil even at 320 degrees: that is where the name "pressurized water reactor" comes from. It is the block you see inside through the windows.
See data for 2 kinds
In-core Instrument Guide Tube
Primary Coolant- Light level
- 4
Primary Coolant Pipe, Primary Coolant Nozzle, Reactor Coolant Pump (7-block set)
3 kindsThe red primary piping and the ports that connect pipes to vessels. Hot radioactive water (320 degrees) passes through, always in a closed loop back to the reactor. If the steam generators, pressurizer and reactor coolant pumps aren't connected with red piping, "the primary loop is broken" appears and it can't run. The reactor coolant pump keeps circulating water between the reactor and the steam generators. The flywheel on its motor keeps it turning by momentum even if power is lost, protecting the core. Placing one gives you 7 blocks.
See data for 3 kinds
Primary Coolant Pipe
Primary Coolant Nozzle
Reactor Coolant Pump (7-block set)Steam generator (lower shell, shell, corner shell, rounded jacket, cone, upper shell, head)
7 kindsThe heart of a PWR, where the primary heat boils the secondary water. Primary water flows only inside the tubes (heat transfer tubes) and doesn't mix with the water outside: radioactive water goes no further than here. It is narrow at the bottom and wide at the top because the top needs room for the steam separators and moisture separators. The head is the main steam outlet. A real one is 21 m tall and stands higher than the reactor vessel.
See data for 7 kinds
Steam Generator Lower Shell
Steam Generator Shell
Steam Generator Shell (Corner)
Steam Generator Jacket (Rounded)
Steam Generator Cone
Steam Generator Upper Shell
Steam Generator HeadPressurizer (shell, rounded jacket, internals, upper head) and Pressurizer Relief Tank
5 kindsA tall vessel (only one) that pressurizes the primary loop so it doesn't boil. From the bottom up it holds heaters -> water -> the water surface -> steam -> spray. Heating the water swells the steam above the surface and raises the pressure; spraying cold water lowers it. Placing the upper head adds the safety valves, relief valves, manhole, instruments and spray nozzle. The relief tank turns steam released from the valves back into water.
See data for 5 kinds
Pressurizer Shell
Pressurizer Jacket (Round)
Pressurizer Interior
Pressurizer Upper Head (Top Set)
Pressurizer Relief TankVolume Control Tank (CVCS) and Charging Pump (CVCS)
2 kindsA system that takes out and puts back a little primary water at a time, keeping its cleanliness and amount. In a newly built plant, while it is cold and stopped, right-click the volume control tank to fill the primary loop with pure water (filling; not needed the second time). Diluting the boron is done from here too. The charging pump is a high-pressure pump that pushes the tank's water back into the primary loop.
See data for 2 kinds
Volume Control Tank (CVCS)
Charging Pump (CVCS)Boric Acid Batching Tank (2-block set) and Boric Acid (powder)
2 kindsBoric acid absorbs neutrons: a "chemical control rod". Hold boric acid (powder) and right-click the batching tank to dissolve it in warm water into boric acid solution (up to 4 batches). Each startup uses one batch. Without the tank or without boric acid solution, the main control panel won't start the plant. Place it next to the volume control tank.
See data for 2 kinds
Boric Acid Batching Tank (2-block set)
Boric Acid (powder)Containment Penetration
Where pipes pass through the containment wall. This is the only place allowed to go through the wall, and only secondary pipes pass through it.
Main Steam Pipe, Main Steam Nozzle, Feedwater Pipe, Feedwater Nozzle
4 kindsThe secondary pipes. The main steam pipe carries steam from the steam generator heads to the turbine (its port is the orange main steam nozzle). The feedwater pipe returns water condensed in the condenser to the steam generators through the condensate pumps, heaters and feedwater pumps (its port is the light-blue feedwater nozzle). Between the reactor builder and the turbine-generator builder, you lay these two pipes yourself. If the feedwater pipe isn't connected, the main control panel won't let you raise output.
See data for 4 kinds
Main Steam Pipe
Main Steam Nozzle
Feedwater Pipe
Feedwater NozzleMain Control Panel and Station Power Panel (PWR)
2 kindsThe main control panel is the brain of the plant. Right-click it to see the current stage, the state of the primary and secondary loops, and a "hint (what to do next)"; the button below advances to the next stage (when you can't advance, the button becomes "Refresh"). Loading and refueling, and stopping during operation (SCRAM), are here too. The station power panel, placed right below the main control panel, receives power by wire from outside power plants (if it is missing, has no wire or has no power, the reason is shown and you can't go on).
See data for 2 kinds
Main Control Panel
Station Power Panel (PWR)PWR Turbine-Generator Builder
Builds the whole row of turbine building equipment: the shaft line of main steam stop valve and control valves -> high-pressure turbine -> (moisture separator reheaters on both sides) -> 3 low-pressure turbines -> generator -> exciter, the condenser right below, the feedwater line (condensate pumps, feedwater heaters, deaerator, feedwater pumps), the circulating water pumps, intake and discharge, and the generator's terminal box and isolated phase bus. When it is finished, chat tells you where to use the transformer/switchyard builder next. Sneak and right-click to choose "full set" or "leave the connections" (the 6 circulating water pipe risers are placed by hand = the turbine crew) (during team missions it leaves them automatically).
Turbine Steam Inlet, Main Steam Stop & Control Valves, Valve Actuator
3 kindsConnect the main steam pipe to the turbine steam inlet. From there it passes the valves to the high-pressure turbine. The stop valve shuts off all steam in an emergency, and the control valve adjusts the amount of steam to match the output. The valve actuator is the hydraulic moving part that opens and closes the valves; on a trip signal they all close at once.
See data for 3 kinds
Turbine Steam Inlet
Main Steam Stop & Control Valves
Valve ActuatorHigh-pressure turbine casing, rounded casing, Crossover Pipe
3 kindsThe first turbine to spin, on steam from the steam generators. The steam that leaves it has its moisture removed and is reheated in the moisture separator reheaters, then passes to the low-pressure turbines through the crossover pipe (the thick gold pipe).
See data for 3 kinds
High-Pressure Turbine Casing
HP Turbine Casing (Round)
Crossover PipeMoisture separator reheater (shell, rounded shell, end nozzles, separator element, reheater tube bundle)
5 kindsA long cylinder (on both sides of the shaft line) that removes droplets from the steam leaving the high-pressure turbine and reheats it. Wet steam would damage the low-pressure turbine blades. Droplets hit the zigzag of corrugated plates (the moisture separator element) and fall off, and main steam passing inside the reheater tube bundle reheats the steam outside. A quiet piece of equipment with no moving parts.
See data for 5 kinds
Moisture Separator Reheater
MSR Shell (Round)
MSR End Nozzles
Moisture Separator Element (Chevron)
Reheater Tube BundleLow-pressure turbine casing and rounded casing
2 kindsThree of them squeeze out the power left in the steam. Through the window you can see rows of blades, getting larger stage by stage, spinning. The steam that leaves goes back to water in the condenser right below.
See data for 2 kinds
Low-Pressure Turbine Casing
LP Turbine Casing (Round)Bearing Pedestal (3-block set) and Shaft Gland
2 kindsThe bearing pedestal rises from the floor and holds the rotating shaft on a film of oil (the metal parts never touch). Placing one gives you 3 blocks, and breaking any one removes them all. The shaft gland is where the shaft passes through the end wall of the casing: a seal that lets the shaft through without leaking steam.
See data for 2 kinds
Bearing Pedestal (3-block set)
Shaft Gland (casing end wall)Condenser (condenser, shell, flared shell, waterbox, tube bundle, tubesheet, hotwell, condensing steam)
8 kindsThe vessel right under the low-pressure turbines that cools steam with seawater and turns it back into water. Inside is a vacuum, so the steam flows in easily. The waterboxes are the seawater inlet and outlet (sneak and right-click with an empty hand to switch the whole set between inlet and outlet). Seawater flows inside the thin tubes and cools the steam outside them (a real condenser has over 10,000 tubes). The tubesheet is the thick plate the tubes are fixed into. The water collects in the hotwell and is sent out by the condensate pumps. Without a condenser, the main control panel won't let the turbine turn.
See data for 8 kinds
Condenser
Condenser Shell
Condenser Shell (Flare)
Condenser Water Box
Condenser Tube Bundle
Condenser Tubesheet
Hotwell Condensate
Condensing SteamCondensate Pump, LP Feedwater Heater, Deaerator, Feedwater Pump, HP Feedwater Heater
5 kindsThe feedwater line that sends the secondary water, now water again, back to the steam generators. The condensate pump draws water from the bottom of the condenser, the LP feedwater heater warms it with steam taken from partway through the turbine, the deaerator removes the oxygen dissolved in it (left in, it would rust the pipes), the feedwater pump sends it on, and the HP feedwater heater warms it further. The warmer the water when it goes back, the more efficient the power generation.
See data for 5 kinds
Condensate Pump
LP Feedwater Heater
Deaerator
Feedwater Pump
HP Feedwater HeaterCirculating Water Pump (3-block set), Circulating Water Pipe, Seawater Intake (Bar Screen), Discharge Outfall
4 kindsThe third loop of water (circulating water). The intake takes in water from the sea, and its bar screen stops debris: it isn't cooling water unless water (sea or river) touches it within 2 blocks to the side or below. The circulating water pump lifts the water and sends it through the circulating water pipe to the condenser's waterboxes, and the warmed water (about 7 degrees warmer in a real plant) goes back to the sea through the outfall. Seawater and secondary water never mix.
See data for 4 kinds
Circulating Water Pump (3-block set)
Circulating Water Pipe
Water Intake (Bar Screen)
Discharge OutfallGenerator casing, rounded casing, stator (core / coil end)
3 kindsThe machine that turns on the same shaft as the turbine and makes electricity (a real one is cooled inside with hydrogen). The stator is the part that doesn't turn, with coils in an iron core; when the rotor (a spinning magnet) turns inside, electricity is made in the coils. Through the window you can see it turning and the copper-colored coils.
See data for 3 kinds
Generator Casing
Generator Casing (Round)
Generator Stator (Core / Coil End)Exciter, rounded casing, armature (with rotating rectifier)
3 kindsA small generator (at the very end of the shaft line) that supplies the power for the generator's magnet. A rotating rectifier turns it into DC to strengthen the rotor's magnet. It has no brushes, so there are no sparks. Without it, the generator makes no power even when it turns.
See data for 3 kinds
Exciter
Exciter Casing (Rounded)
Exciter Armature (Rotating Rectifier)Generator Terminal Box, Isolated-Phase Bus, Phase Marker Plate
3 kindsThe terminal box is the end of the stator windings, where the generated power comes out (right-click for the output and the stored power). The isolated-phase bus carries the generator's power (about 20,000 V) to the main transformer, with each phase in its own aluminum tube: three in a row. Its shape (straight, vertical, bend, T) is decided just by placing it; sneak and right-click with an empty hand to switch the phase between A, B and C. The phase marker plate shows the phase at a glance (red = A, white = B, blue = C).
See data for 3 kinds
Generator Terminal Box (Power Outlet, per phase)
Isolated-Phase Bus
Phase Marker Plate (A red / B white / C blue)PWR Transformer & Switchyard Builder
Builds the whole place that sends the plant's power out to the transmission lines: main transformer -> outdoor switchyard (3 buses, 2 circuits) -> transmission tower, in that order. The spot you right-click becomes the middle of the front row. Use it where chat tells you after using the turbine-generator builder. Sneak and right-click to choose "leave the connections" (the 3 isolated phase bus drops are placed by hand = the power line crew) (during team missions it leaves them automatically).
Main transformer (tank, LV bushing, radiator, conservator, HV bushing, nameplate, manhole)
7 kindsRaises the generator's 20,000 V or so to a high voltage for transmission (275,000 to 500,000 V). The tank is full of insulating oil, cooled by the radiator's fins and fans (the fans turn only while generating). The conservator gives the oil room to expand and shrink. The LV bushing receives the isolated-phase bus; the HV bushing is the outlet to the transmission line. The builder builds the full set; blocks you place by hand become the parts for any missing spots and repair it.
See data for 7 kinds
Main Transformer Tank
Main Transformer LV Bushing
Main Transformer Radiator (OFAF fan)
Main Transformer Conservator
Main Transformer HV Bushing
Main Transformer Nameplate
Main Transformer ManholeSwitchyard (gantry, bus, circuit breaker, disconnector, current/voltage transformer, surge arrester, control building)
7 kindsOutdoor equipment that gathers the plant's power and distributes it to each transmission line. The gantry is the steel frame that holds the buses and incoming lines in the air; the bus is an aluminum tube that connects just by placing it. The circuit breaker is the only machine that can cut a line while current is flowing (in an accident it cuts in about 0.05 seconds). The disconnector opens after the current is cut to make a "visible gap". The current and voltage transformers measure current and voltage and send them to the protective relays, and the surge arrester sends lightning's high voltage into the ground. The control building, with protective relay panels and batteries, is the brain of the switchyard.
See data for 7 kinds
Switchyard Gantry
Switchyard Bus
Circuit Breaker (4-block set)
Disconnector (4-block set)
Current / Voltage Transformer (4-block set)
Lightning Arrester (4-block set)
Switchyard Relay HouseTransmission Tower (26-block set, 2 circuits) and Overhead Power Line
2 kindsPlacing one tower gives you a 26-block, 2-circuit tower. Place an overhead power line right below the hanging fitting at the tip of a crossarm and it connects (6 hanging points = in a real tower, 3 lines make one circuit). The overhead line carries power like a wire on the ground (in ENECRA it all flows as one). From the switchyard, along the towers, to the town's substations and homes. The tower's steel frame doesn't conduct power.
See data for 2 kinds
Transmission Tower (26-block set)
Overhead Power Line