L Reactor

E104343

L Reactor was a heavy water–moderated nuclear production reactor at the Savannah River Site in South Carolina, historically used to produce materials such as plutonium and tritium for the U.S. nuclear weapons program.

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All labels observed (1)

Label Occurrences
L Reactor canonical 4

Statements (49)

Predicate Object
instanceOf heavy water–moderated reactor
nuclear reactor
production reactor
associatedRiver Savannah River
commissioned 1954
constructionStart 1951
coolant light water
coolingSystem once-through river water cooling with cooling basins
coreType graphite-free, aluminum-clad fuel assemblies in heavy-water moderator
country United States of America
surface form: United States
currentUse non-operational, deactivated nuclear facility
deactivationStart late 1980s
decommissioningStatus permanently shut down
designedElectricalOutput none (non‑power production reactor)
designedThermalPower approximately 2,800 MWth
environmentalConcern radioactive releases to seepage basins and surrounding environment
finalShutdown 1988
firstCriticality 1954
fuelType natural uranium
location Savannah River Site
militaryRole strategic materials production for U.S. nuclear arsenal
moderator heavy water
neighboringReactor C Reactor
K Reactor
P Reactor
R Reactor
operator United States Atomic Energy Commission
surface form: U.S. Atomic Energy Commission

U.S. Department of Energy
ownership United States government
surface form: U.S. government
partOf Savannah River Site
surface form: Savannah River Site reactor complex
primaryMission support of U.S. nuclear weapons program
primaryUse production of tritium
production of weapons-grade plutonium
producedIsotope other transuranic isotopes
plutonium-239
tritium
reactivated 1985
reasonForFinalShutdown end of Cold War production needs and safety/aging concerns
regulatoryOversight Defense Nuclear Facilities Safety Board
relatedProgram United States nuclear weapons complex
surface form: U.S. Cold War nuclear weapons program
safetyEvent experienced fuel assembly failures and leaks during operation
safetyUpgrades received upgrades prior to 1985 restart
shutdown 1968
siteCode SRS L Reactor
siteOperator DuPont
Westinghouse Savannah River Company
state South Carolina
statusAfter1968Shutdown standby
wasteManagement generated high-level and low-level radioactive waste

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

L Area hasFacility L Reactor
P Reactor neighboringFacilities L Reactor
R Reactor coLocatedWith L Reactor