

Episode:
58

SM-1 Army PWR
Country:
USA
Years of Operation:
1957-1973
Category:
Research & Experimental
Reactor Type:
PWR
Coolant:
Light Water
Fuel Type:
Enriched Uranium
Moderator:
Light Water
Thermal Power (MWth):
20
Electrical Power (MWe):
20
Status:
Research & Experimental


timeline
First Criticality Year
1957
Commercial Op Year
1957
Shutdown Year
1973

Lessons Learned
1. Nuclear Success Usually Looks Boring
The safest and most effective reactors rarely become famous. SM-1 proved that
disciplined operations, good procedures, and trained operators matter far more than
flashy technology claims.
2. Training Culture Is a Reactor Technology
SM-1 demonstrated that operational discipline and human performance are foundational
technologies in nuclear power — every bit as important as pumps, fuel, and control
rods.
3. Small Reactors Still Face Big Logistics Realities
SM-1 worked technically, but economics and infrastructure eventually overtook the
mission. Even successful reactors must compete against changing logistical and
commercial realities.
sources

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