GKN AEROSPACE — HAZARD ZONE SIMULATOR

Per-tank evaporation/venting rate that feeds the plume. Realistic MMA pool ≈ 2–8 kg/s. The dominant lever on plume reach. Each cascade tank below adds another source this size.

Britter-McQuaid — screening dense-gas model. Heavier-than-air vapour slumps and hugs the ground, reaching farther than a neutral plume. The default for MMA. ±factor 2-3.

Officials say the tank sits beside 2 other storage tanks. A blast can trigger sympathetic detonation. Toggle the neighbours (worst case: 34,000 gal each, full). Cascade grows the blast (combined fuel) and the plume — each failing tank adds another leak of the rate set above.

TNT-equivalent = blast energy only (not radiation/fallout).

Four models, each deriving the hazard from first principles (real API runs). Claude is the interactive default (on); toggle any model to overlay its blast + plume, in its colour. Cascade scales the blast; the leak-rate slider scales the plume. Plume follows the dispersion model picked above (B-M / DEGADIS) — screening-level, ±factor 2–3.