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NRC adopts ROP updates
The Nuclear Regulatory Commission has approved a significant overhaul of its Reactor Oversight Process (ROP) baseline inspection program that stresses a leaner, more risk-focused inspection process.
This adoption comes just over a month after NRC officials published their findings on the proposed ROP changes. The changes would reduce the number of hours spent annually on direct inspections at U.S. nuclear power plants by 38 percent.
J. P. Phelps, R. Sher
Nuclear Science and Engineering | Volume 2 | Number 5 | September 1957 | Pages 676-678
Technical Paper | doi.org/10.13182/NSE57-A25434
Articles are hosted by Taylor and Francis Online.
Values of the resonance escape probability in 0.387-in. diameter, 2% U235-98% Th232 light-water moderated lattices have been measured. The results are p = 0.821, 0.859, 0.889, 0.918, 0.937 for water/metal volume ratios 1, 1.5, 2, 3, 4. These values are somewhat higher than corresponding ones measured in similar slightly enriched uranium lattices.
