S3G reactor

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The S3G reactor is a naval reactor used by the United States Navy to provide electricity generation and propulsion on warships. The S3G designation stands for:

• S = Submarine platform
• 3 = Third generation core designed by the contractor
• G = General Electric was the contracted designer

This nuclear reactor generates 78 MW. It consists of a highly enriched uranium core with a 2-loop pressurized water reactor. It was the prototype for the two reactors used aboard the USS Triton (SSRN-586). Many S5W reactor plants were refueled with the skew-divergent S3G core 3.

After the Triton was decommissioned, one of the two reactors aboard the submarine was said put in service as a prototype to train students and test systems and materials at Knolls Atomic Power Laboratory in Ballston Spa, New York.

United States Naval reactors

Aircraft carrier reactors:

A1B | A1W | A2W | A3W | A4W

Cruiser reactors:

C1W

Destroyer reactors:

D1G | D2G

Submarine reactors:

S1C | S1G | S1W | S2C | S2G | S2W | S2Wa | S3G | S3W | S4G | S4W | S5G | S5W | S6G | S6W | S7G | S8G | S9G

List of United States Naval reactors