Erosion Flow Testing of Purposely Defected Stainless Steel Clad Compacted UO$sub 2$ Powder Fuel

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Compacted UO/sub 2/ powder specimens with purposely defected stainless steel cladding were erosion flow tested under simulated boiling-water reactor operating conditions, excluding neutron flux. The type of clad defects were 0.026inch wide slits, completely through the clad, varying in length from 0.25 to 1 inch. Maximum erosion flow test exposure was 6000 hours in 7 ft/sec, 536 deg F flowing water. The results of post test examination indicated that defected stainiess-clad swaged fuel with UO/sub 2/ densities greater than 90% T.D. is comparable to pellet type fuel with respect to erosion resistance. Within the test parameters, the stresses and imperfections … continued below

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58 pages

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Lingafelter, J.W.; Lees, E. A. & Seely, R. J. February 1962.

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Compacted UO/sub 2/ powder specimens with purposely defected stainless steel cladding were erosion flow tested under simulated boiling-water reactor operating conditions, excluding neutron flux. The type of clad defects were 0.026inch wide slits, completely through the clad, varying in length from 0.25 to 1 inch. Maximum erosion flow test exposure was 6000 hours in 7 ft/sec, 536 deg F flowing water. The results of post test examination indicated that defected stainiess-clad swaged fuel with UO/sub 2/ densities greater than 90% T.D. is comparable to pellet type fuel with respect to erosion resistance. Within the test parameters, the stresses and imperfections introduced into the stainless cladding as a result of swaging did not adversely affect the corrosion characteristics of stainless steel in a boiling water reactor coolant environment. As a result of the test data, two swaged fuel rods containing 0.50-inch long slits were inserted into the VBWR reactor. The defected rods are performing satisfactorily after accumulating 1000 Mwd/t exposure, with activity due to fission gas release below 20 mu c/sec. (auth)

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58 pages

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Other Information: Orig. Receipt Date: 31-DEC-63

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  • February 1962

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  • Oct. 18, 2017, 7:39 a.m.

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  • Nov. 22, 2024, 10:41 p.m.

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Lingafelter, J.W.; Lees, E. A. & Seely, R. J. Erosion Flow Testing of Purposely Defected Stainless Steel Clad Compacted UO$sub 2$ Powder Fuel, report, February 1962; San Jose, California. (https://digital.library.unt.edu/ark:/67531/metadc1034481/: accessed July 16, 2026), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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