I'm glad to show you my next reactor model:


https://powdertoy.co.uk/Browse/View.html?ID=557812

I'm writing the operation manual now, but I'll be glad to see your feedback and advises.

I'm sorry about my English: it's a liitle bit rusty. )

And this is my first one:
https://powdertoy.co.uk/Forum.html?action=vthread&forum=3&topic=1319

Updated.

1) Reworked the controls & indications.
2) WL - "low water level" indicator added.
3) SV - "safety valve open" indicator added.
4) Some minor stuff.

Updated to v 0.96.

1) AUX cooling system trigger reworked.

Now "AUX cooling" turns ON only if:
- Temperature of the top of any fuel rod rises above 100 ?°
AND
- any steam detector detects steam

SCRAM (auto or manual) triggers "AUX cooling" ON regardless of any of the conditions described above.

This add-on effectively prevents reactor flooding with "AUX cooling" water.

2) Overrides panel  reworked.

Indication logic is the following: when red light is lit, the override is ON.
Controls logic is the following: spark RED button to turn ON the override, and spark GREEN button to turn override OFF.

- "SCRAM override" - main SCRAM override.
- "TF DMG" - override the SCRAM if any of top segments of fuel rods are damaged.
- "BF DMG" - override the SCRAM if any of bottom segments of fuel rods are damaged.
- "OH-3" - override the SCRAM if all three fuel rods are overheat.
- "OH-1" - override the SCRAM if one fuel rod overheats.

3) Some minor tweaks.

Powder toy: BWR Nuclear Reactor  v0.96 BETA 3

History.

In general, nuclear reactors on TPT can be divided into the following types:
by fuel and activator -
UP - uranium-pressure
PP - plutonium-pressure
PN - plutonium-neutron
PPN - plutonium-pressure-neutron

My BWR is unusual by combining all of the types, shown above.

Overview.

The fuel cycle is the following:
- at startup, pure plutonium is inserted into the fuel module (assambly) and irradiated by neutrons.
- plutonium heats up and generates pressure
- water heats up, becomes steam and pressure rises even more
- more plutonium fissiles through high pressure and becomes uranium
- uranium heats up through high pressure and heats up water
- water heats up more, generate more steam and pressure rises again

Controls:
You can control the reactor by:

- Adding or withdrawing the fuel and/or waste in 3 fuel assemblies. All assemblies and all processes controlled separately.
- 6 neutron emitters, 3 on the left side and another 3 on the right. ?ontrolled separately.
- 2 main valves: left and right. Controlled simultaneously.
- 2 main water pumps: left and right. Controlled simultaneously.

Additional systems:
AUX cooling - extra water input, if the temperature of the top ends of the FA (fuel assemblies ) exceeds 100 C.
SV - safety valve. Opens automatically, if there is steam in the bottom of the vessel of the BWR

ASC
ASC - automatic SCRAM system. It shuts down BWR if the following conditions are met:
- "TF DMG" - any of top segments of fuel rods are damaged.
- "BF DMG" - any of bottom segments of fuel rods are damaged.
- "OH-3" - all three fuel rods are overheat.
- "OH-1" - one fuel rod overheats.

You can disable any of the SCRAM subsystem by clicking (SPRK )on the red buttons on the overrides panel on the left side.

Quickstart:

Load BWR.


Turn on water equalization.


Unpause.


SPRK once the "fuel add" buttons for the FA 1, 2 and 3.
Wait until all FA will be fully filled with plutonium.


SPRK once the "emmiter start" buttons for the neutron emitters 1, 2, 3 left and 1, 2, 3 right.


Watch the main pressure indicator - when pressure rises to 1.3 - 1.5 bar, SPRK once the "main vlv +" to open the main valve at one point.
Watch the water flow - SPRK once the "main pmp I" button to turn on main water pumps.

If you are not experienced BWR operator, turn OFF all overrides.

Remember: maximum operation pressure of this BWR is 3.5 bar.