Reactor systems
Reactor · Control Room · SKALA · 1,420 K nominal
Sources: the Reactor Guide (MH:Reactor_Guide, by @itslavrik; the 75 KB FD:Reactor_Guide), MH:Meltdown, MH:Control_rods, MH:Coolant, MH:Feedwater, MH:Turbines, MH:Relief_Valves, MH:Generators, MH:Power_Bus_Panel, MH:Radiation. There is a practice simulator at naramoreactorsimulator.pages.dev.
The Control Room
Section titled “The Control Room”Reactor Primary (Feedwater, Control Rods, Coolant valve, Relief Valves), the Grid terminal, Emergency Systems (SCRAM only), Startup Control (Shutdown Pumps switch, Reactor Ignition), the Shift Manager panel, two turbine panels, the main notification panel and the SKALA panel — “Displays hacked computers during raids”. Four stations, two exits. SKALA is named after Chernobyl’s control system.
The temperature ladder
Section titled “The temperature ladder”| K | Meaning |
|---|---|
| 323 | Minimum / stall temperature |
| 530 | Approximate minimum for turbine sync |
| 650 | Ignition — the TCG’s floor |
| ~1,415 | Coolant valve opened during start-up |
| 1,420 | Nominal / ideal operating temperature — the TCG’s start |
| ~1,700–1,750 | Ceiling at which one feedwater pump still suffices |
| 2,100 | Hazard Pay Bill threshold |
| 2,400 | “REACTOR OVERHEAT — The Reactor is above safe operating parameters…”; High Temperature music |
| 2,600 | Safe-SCRAM procedure: send rods to 100 % |
| 3,120 | Meltdown begins: “REACTOR SHUTDOWN — An official emergency has been declared. Emergency options are now available.” |
| > 3,300 / > 3,500 / 4,000 | SCRAM “~99 % fails” / “nearly impossible” / “absolutely zero” |
Rods, feedwater, coolant, valves
Section titled “Rods, feedwater, coolant, valves”- Control rods: 100 % is maximum cooling (−9 K/s), 0 % is +11 K/s; “1 % of rods raises/lowers temperature by 0.2 K/s”; 55 % is stable at ≥ 75 % fuel. A rod jam shows “ERROR” and is unrecoverable.
- Feedwater: two pumps at 80 % utilisation (0.92 m³/s each); above 80.1 % or 2,560 RPM the panel reads “PUMP 1/2 CAVITATING” — the Feedwater Pump Trip Incident. One pump lost is survivable below ~1,750 K.
- Coolant: pumps “Alpha” and “Beta” (“never abbreviate”), 2,500 RPM, 6,000 kW each; off at server start. The Coolant Pumps card.
- Relief valves: four; each −75 K over 10 s with a 90 s cooldown; stacked, about −300 K. “Cycling” is re-opening each as it comes back; “Dumping” is all four at once. Relief Valve Cycling is COOL 150 with a one-shift cooldown.
- Fuel: refuel below ~80 %; temperature drops fast below 75 %; PM operate the crane and the refueller panel’s FRS slots (“swap rods”). Reactor Hall’s Refuel.
Turbines, grid, generators
Section titled “Turbines, grid, generators”- Turbines: two; sync window 2,990–3,010 RPM on the synchroscope; explode at 5,000 RPM or 0 % wear; trip below 1.5 m³/s.
- Grid: external bus (550,000 V) → primary bus → auxiliary bus → DC bus; configurations External, Turbine, Emergency. Station load 25,000–30,000 kW. The Master Arm Switch sits on the Power Bus Panel.
- Emergency Diesel Generators: three, ~5,500 kW each; refuel below 70 %, +30 % per can, a 36-can rack, low-fuel alarm at 15 %. The EDG card.
Power Orders and shift tiers
Section titled “Power Orders and shift tiers”Orders arrive about every 90 s, demand 15,000–24,500 kW (double under the Power Order Efficiency Act), must be held within margin for ~20 s, and pay 150 XP. Shift tiers: T1 0–3 orders 500 XP; T2 4–6 1,000 XP; T3 7+ 3,000 XP and the badge The Perfect Shift; T4 12 orders 6,000 XP — hard-coded unreachable, “Removed by 2NIA”. Tier 3 music plays only if the reactor is below 2,400 K.
Meltdown and SCRAM
Section titled “Meltdown and SCRAM”At 3,120 K a meltdown is declared; the SCRAM button becomes available after roughly 45–75 s. Pressing it drops the rods to 100 % and cancels the meltdown multiplier — “it is considered impossible to prevent an explosion without using it”. Then four minutes to bring the core below 900 K (raised from 800 K in “Percussive Maintenance”, 1 August 2026). Failure: “the entire reactor core launches up and onto its side as well as killing anybody nearby”; two minutes to reach the Staff or City bunker before the secondary explosion; the Plant Director is auto-fired; 500 XP for survival. Backronym: “Safety Control Rod Axe Man”.
Radiation has stages 0–3 keyed to water level and temperature; hazmat colours are PM orange, LO dark green, RO / PD yellow, SM blue, NMP / NAMS / 8NEC white. The TCG’s HAZMAT keyword and the Overheat radiation tick come from here.
Emergency protocols
Section titled “Emergency protocols”1 — a West Noobian in the Control Room (“WN CR”); 2 — coolant off; 3 — feedwater level dropping; 4 — external grid lost and one turbine; 5 — external lost and both turbines; 6 — raid start.