Boiling Nuclear Superheater (BONUS) nuclear power plant
Gross capacity
18MW
Boiling Nuclear Superheater (BONUS) nuclear power plant is a boiling water reactor unit at Boiling Nuclear Superheater (BONUS) nuclear power plant in Puerto Rico rated at 18 MW gross. It is retired. Commercial operation began 1 Sep 1965.
Specification
| Reactor type | Boiling water reactor (BWR) |
|---|---|
| Model | Superheater |
| Size | Very small20 MWe or less |
| Coolant | Light water |
| Moderator | Light water |
| Gross capacity | 18MW |
| Net capacity (reference) | 17MW |
| Net capacity (design) | 17MW |
| Thermal output | 50MWt |
| NSSS vendor | not on record |
| Typical enrichment | 3–5% U-235 |
Ownership & location
| Site | Boiling Nuclear Superheater (BONUS) nuclear power plant |
|---|---|
| Unit | not stated |
| Country | Puerto Rico |
| Owner | US DOE and Puerto Rico Electric Power Authority100% |
| Operator | US Department of Energy Puerto Rico Water Resources |
| Coordinates | 18.3652, -67.2687 |
Fuel chain for this unit
Fuel form
Uranium dioxide pellets in zirconium-alloy cladding
Enrichment
3–5% U-235
Who makes this assembly
- Framatome BWR fuel assemblies
- Global Nuclear Fuel BWR fuel assemblies
- Westinghouse Electric Company BWR fuel assemblies
Upstream
Enriched fuel means this unit sits downstream of five conversion plants and four enrichment operators holding 88% of world capacity between the top three.
Fabricator capability is recorded against reactor type and model line, not against named units,
utilities do not publish fuel contracts. See the fuel chain.
Timeline
- 1 Jan 1960Construction start
- 13 Apr 1964First criticality
- 14 Aug 1964Grid connection
- 1 Sep 1965Commercial operation
- 1 Jun 1968Permanent shutdown
Sources
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release , CC BY 4.0 · retrieved 2026-09-06 · this unit last researched by GEM on 2024-05-20
- GEM.wiki entry (further reading) , CC BY-SA 4.0, linked, not quoted
How these sources are used, including the corrections applied on top of them and what is deliberately left blank · download the underlying data