This paper presents the development, design and results of an electrically heated seven-pin instrumented bundle assembly for LMFBR thermal hydraulic testing. The test assenbly v/as capable of operating in liquid metals at typical temperatures (800°F) and nominal heat fluxes (500,000 Btu/hr-ft^) of LflFBR's and was typical of LflFBR geometry. Wire wraps v;ere used as spacers. Heat transfer data v/as taken over a tenfold range of Peclet number (50 to 500), and the results are presented as local coolant enthalpy rises, local coolant temperatures and local clad temperatures. Even thoug!i considerable forced diversion of the coolant by the wire wraps was evident, significant coolant and clad temperatures gradients did exist across pins of the outer row. A severe hot spot did not exist beneath a v/ire wrap.
The National Ignition Facility (NIF) is a U.S. Department of Energy inertial confinement laser fusion experimental facility currently under construction at the Lawrence Livermore National Laboratory (LLNL). To ensure that decontamination and decommis-sioning (D&D) issues at the end-of-life are manageable, this subject has received attention from an early stage. This paper summarizes the NIF D&D issues, and the status of the D&D plan.
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