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S6G reactor

Naval nuclear reactor used by US Navy

Naval nuclear reactor used by US Navy

The S6G reactor is a naval reactor used by the United States Navy to provide electricity generation and propulsion on attack submarines. The S6G designation stands for:

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

Design

The S6G reactor was designed by Knolls Atomic Power Laboratory under a contract with General Electric for use on the attack submarines. The S6G reactor plant consists of the reactor coolant, steam generation, and other support systems that supply steam to the engine room. The S6G is a 165 megawatt (MW) reactor driving two 26 MW steam turbines.

The Los Angeles-class engine room also contains the steam turbines that generate electricity and drive the propeller shaft. While exact specifications are classified, the S6G reactor can propel a Los Angeles-class submarine at over 15 kn when surfaced and over 25 kn while submerged.

The S6G reactor plant was originally designed to use the D1G-2 core, similar to the D2G reactor used on the guided missile cruiser. All Los Angeles-class submarines from on were built with a D2W core. The D1G-2 cores are being replaced with D2W cores when the boats are refueled.

References

References

  1. [http://www.world-nuclear.org/information-library/non-power-nuclear-applications/transport/nuclear-powered-ships.aspx World-nuclear.org]- Retrieved 2018-05-13
  2. [http://www.fas.org/man/dod-101/sys/ship/eng/reactor.html Nuclear Propulsion]
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