Skip to content
nuclear•chain

Boiling Nuclear Superheater (BONUS) nuclear power plant

Retired Puerto Rico
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)
ModelSuperheater
Size classLarge
CoolantLight water
ModeratorLight water
Gross capacity18MW
Net capacity (reference)17MW
Net capacity (design)17MW
Thermal output50MWt
Typical enrichment3–5% U-235
Ownership & location
SiteBoiling Nuclear Superheater (BONUS) nuclear power plant
Unitnot stated
CountryPuerto Rico
OwnerUS DOE and Puerto Rico Electric Power Authority100%
OperatorUS 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
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.

RosatomUrencoCNNCOrano
Conversion
CamecoCNNCConverDynOranoRosatom
Fabricator capability is recorded against reactor type and model line, not against named units — utilities do not publish fuel contracts.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. 1 Jan 1960Construction start
  2. 13 Apr 1964First criticality
  3. 14 Aug 1964Grid connection
  4. 1 Sep 1965Commercial operation
  5. 1 Jun 1968Permanent shutdown

Sources