From 4162ecf712104fd213e33f943b1754e6263357ef Mon Sep 17 00:00:00 2001
From: Codex Agent <codex@example.com>
Date: Mon, 24 Nov 2025 23:23:01 +0100
Subject: [PATCH] Add phased plan for realistic steam/enthalpy modeling

---
 TODO.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/TODO.md b/TODO.md
index 016918e..b9daa0f 100644
--- a/TODO.md
+++ b/TODO.md
@@ -7,3 +7,8 @@
 - [ ] Introduce CHF/DNB margin, clad/fuel split temps, and SCRAM matrix for subcooling loss or SG level/pressure trips.
 - [ ] Flesh out condenser behavior: vacuum pump limits, cooling water temperature coupling, and dynamic back-pressure with fouling.
 - [ ] Dashboard polish: compact turbine/generator rows, color critical warnings (SCRAM/heat-sink), and reduce repeated log noise.
+- [ ] Incremental realism plan:
+  - Add stored enthalpy for primary/secondary loops and a steam-drum mass/energy balance (sensible + latent) while keeping existing pump logic and tests passing.
+  - Adjust HX/pressure handling to use stored energy (saturation clamp and pressure rise) and validate steam formation with both pumps at ~3 GW.
+  - Update turbine power mapping to consume steam enthalpy/quality and align protection trips with real steam presence.
+  - Add integration test: cold start → gens/pumps 2/2 → ramp to ~3 GW → confirm steam quality threshold → enable all turbines and require electrical output.