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 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. This prototype training reactor was taken off line in 1992 and subsequently decommissioned.

United States Naval reactors

Aircraft carrier reactors:

A1W | A2W | A3W | A4W| A1B

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