A summary of the program is included along with a technical outline of the SER, S2DR, SNAP 10A/SNAPSHOT, S8ER, and S8DR reactor systems. The SNAP reactor programs are outlined in this report. SNAP (Space Nuclear Auxiliary Power) reactor overview. Execution of this project provides valuable experience applicable to future projects addressing space and liquid-metal-cooled reactors.« less Current criticality safety codes have been benchmarked against experiments performed by Atomics International in the 1950s and 1960s. In addition, a project model was established for the handling of a fully fueled liquid-metal?cooled reactor assembly. The return of the fuel elements and disposal of all other reactor materials accomplished the formal objectives of the dismantlement project. The fuel elements were returned to Y-12 on July 13, 2006. Department of Transportation 2R/6M containers. A chain-mounted tubing cutter was used to separate the lid from the vessel, and the 36 fuel elements were removed and packaged in four U.S. The heat exchanger assembly was removed from the top of the reactor vessel, and the criticality safety sleeve was exchanged for a new safety sleeve that allowed for the removal of the vessel lid. A superheated steam process was used to chemically react the residual NaK inside the reactor assembly.
The reactor assembly was removed from its packaging, inspected, and the sodium-potassiummore » (NaK) coolant was drained. To facilitate downblending of the HEU present in the fuel elements, the TSF- SNAP was moved to ORNL on June 24, 2006. After shutdown, it was placed in storage at the Y-12 National Security Complex (Y-12), eventually falling under the auspices of the Highly Enriched Uranium (HEU) Disposition Program. This paper describes the dismantlement of the Tower Shielding Facility (TSF)? Systems for Nuclear Auxiliary Power ( SNAP) reactor, a SNAP-10A reactor used to validate radiation source terms and shield performance models at Oak Ridge National Laboratory (ORNL) from 1967 through 1973. Presented below are both the design and an analysis of this reactor's criticality under various safety and operations scenarios.ĭismantlement of the TSF- SNAP Reactor Assembly A compelling feature of this design is its use of 49.9% enriched U, allowing it to be classified as a category III-D attractiveness and reducing facility costs relative to highly-enriched space reactor concepts. The design utilizes a pin type geometry containing UZrHx fuel clad with Hastelloy-X and NaK-78 flowing around the pins as coolant. This paper presents a 98 kWth reactor for a power system the uses multiple Stirling engines to produce 25 kWe-net for 5 years. Kapernick, Richard J.Ī Hastelloy-X clad, sodium-potassium (NaK-78) cooled, moderated spectrum reactor using uranium zirconium hydride (UZrH) fuel based on the SNAP program reactors is a promising design for use in surface power systems. Performance of the reactor control system and the diagnostic instrumentation is critically evaluted.ĭesign of a 25-kWe Surface Reactor System Based on SNAP Reactor Technologiesĭixon, David D. Prestart-up qualification testing, automatic start-up, endurance period performance, extended operation test and reactor shutdown are described as they affected, or were affected by, overall reactor performance. Madison County Attractions include the Madison County Fair held in early July of each year, Madison Lake State Park, the nationally historic Red Brick Tavern, miles of Rails to Trails, the Jonathan Alder Cabin, and Big Darby Creek, a State and National Scenic River.SNAP 10FS-3 was the first flight-qualified SNAP reactor system to be operated in a simulated space environment. Madison County is also home to the Ohio Peace Officer Training Academy (OPOTA), the Ohio Bureau of Criminal Identification & Investigation (BCI), London Correctional Institution and Madison Correctional Institution. Annually in September the Ohio State University hosts the Farm Science Review, one of the largest farm exhibitions in the world, at the Molly Caren Agricultural Center near London, Ohio. Madison County ranks fourth in both soybean and corn production throughout the state of Ohio. Primarily an agricultural area, 88% of the land consists of farms.
Named after James Madison, 4th President of the United States, Madison County is located in central Ohio between Columbus and Springfield. Your source for Official Madison County Government Information.
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