High Power Density Development Project. Seventh Quarterly Progress Report, October-December 1961

Download or read book High Power Density Development Project. Seventh Quarterly Progress Report, October-December 1961 written by and published by . This book was released on 1962 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The HPD fuel assemblies continued to accumulate exposure during the quarter. The average burnup for the various groups was 1770 to 2810 Mwd/t. Hot swaging of 10-mil stainless clad fuel rods to 95% theoretical density was demonstrated. Results of erosion tests on purposely defected swaged UO/sub 2/ rods of 90% T.D. indicate that these cladded types are highly resistant to UO/sub 2/ removal by coolant streams. Developmental work on fuel handling equipment and fuel assemblies for the Big Rock development is reported. Operation of a 9-rod heat transfer test section at mass velocities of 0.56 x 10/sup 6/ and 1.12 x 10/ sup 6/ lb/hr-ft/sup 2/ for various qualities at 1000 psi is reported. Investigations in physics were aimed at developing economical methods of determining power distribution, the possibility of using axially distributed poison as a step toward improving axial power distribution, and development of a 300 Mw HPD conceptual design. Other activities are reported in coordination and test planning. (J.R.D.).