Refinery (ns2_refinery) is an official NS2 map. Starting positions are not fixed per team: either team can start in Flow Control, Containment, Turbine or Smelting.
5tech points
11resource nodes
15named rooms
15power nodes

Marine startAlien startEither teamTech point, never a startResource node
Tech points
| Room | Start rule |
|---|---|
| Containment | Start for either team |
| Flow Control | Start for either team |
| Smelting | Start for either team |
| Turbine | Start for either team |
| Pipeworks | Not a start (extra tech point) |
Resource nodes
| Room | Nodes |
|---|---|
| Chasm | 1 |
| Conduit | 1 |
| Containment | 1 |
| Exchange | 1 |
| Flow Control | 1 |
| Lava Falls | 1 |
| Pipeworks | 1 |
| Routing | 1 |
| Smelting | 1 |
| Transit | 1 |
| Turbine | 1 |
Start pairs
The map limits which starts go together. In vanilla the game picks one of these pairs at random (server mods can change this).
| Marines start in | Aliens start in |
|---|---|
| Flow Control | Containment |
| Smelting | Containment |
| Flow Control | Turbine |
| Containment | Smelting |
| Containment | Flow Control |
| Turbine | Flow Control |
All 15 room names
Chasm, Conduit, Containment, Empty Space, Exchange, Extraction, Falls Approach, Flow Control, Heat Sink, Lava Falls, Pipeworks, Routing, Smelting, Transit, Turbine