Deck-hung caisson
Deck-hung caisson for seawater lift, produced-water disposal or open-drain sump service: large-bore hollow pipe hung off a gusseted collar on the deck, blind top cover with lifting lug, padded side inlet (port inlet) and a vent nozzle (port vent), guide clamps with stand-off brackets back to jacket steel at −Z, stand-off anodes and a slotted open bottom. Origin on the caisson axis at deck level (y = 0); it rises stickUp above the deck and hangs length below it (intended, like a jacket).
Installation
Copies structure/caisson.tsx and the shared lib/ into src/components/deck-twin/. Needs three, @react-three/fiber and @react-three/drei. See installation for the manual route.
Usage
import { Canvas } from '@react-three/fiber'
import { OrbitControls } from '@react-three/drei'
import { Stage } from './components/deck-twin/lib/stage'
import { Caisson } from './components/deck-twin/structure/caisson'
export default function Scene() {
return (
<Canvas shadows camera={{ position: [8, 5, 9], fov: 35 }}>
<Stage>
<Caisson />
</Stage>
<OrbitControls makeDefault />
</Canvas>
)
}
Props
| Prop | Type | Default | Range |
|---|---|---|---|
nps | number (NPS, in) | null | |
length | number (m) | null | 3 – 60 |
stickUp | number (m) | null | 0.9 – 3 |
inletNps | number (NPS, in) | null | |
ventNps | number (NPS, in) | null | |
rating | 150 | 300 | 600 | 900 | 1500 | 2500 | null | |
guideSpacing | number (m) | null | 2 – 20 |
anodes | boolean | null | |
...group | position, rotation, scale… |
P&ID
A long vertical pipe or open-bottom vessel hanging from the deck through the sea-level line, with the inlet or pump column entering at the top; labelled as seawater lift, firewater, disposal or sump caisson.
Pumps drawn inside it are vertical-turbine-pump or diesel-firewater-pump. A riser is a pipe line (with ESDV) that continues to a subsea pipeline, not an open-ended caisson.
npslengthstickUpinletNpsventNpsratingguideSpacinganodesTypical suppliers
Fabricated to project specification. The geometry is generic and sized from public standards. It is not vendor CAD.
For agents
Machine-readable entry with props, ranges, defaults and ports:
Or fetch /r/caisson.json, or copy a ready-made instruction:
Add the Deck Twin "Deck-hung caisson" component to this project. Run `npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz add caisson` (it copies the file and the shared lib into src/components/deck-twin/), then `npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz info caisson` for its props, ranges and ports. Render <Caisson /> inside a React Three Fiber <Canvas shadows>, wrapped in <Stage> from src/components/deck-twin/lib/stage. Set props from my data (metres, NPS in inches, ASME class) and leave the rest at defaults. Install three, @react-three/fiber, @react-three/drei and @types/three if they're missing. Full guide: https://decktwin.com/skill/SKILL.md