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- W39299706 abstract "This paper presents an extension of a previous closely controlled benchmark solution of contemporary pressurized water reactor (PWR) integral burnable absorber designs to include erbia. Both comparisons used self-generating equilibrium cycles with equal energy, equal discharge burnup, and equal safety constraints. The reference plant for this evaluation is a 3411-MW(thermal) Westinghouse four-loop nuclear steam supply system operating with an inlet temperature of 285.9{degrees}C, a core coolant mass flow rate of 16 877.3 kg/s, and coolant pressure of 15.5 MPa. The reactor consists of 193 VANTAGE 5H fuel assemblies that are discharged at a region average burnup of 48.4 GWd/tonne U. Each fuel assembly contains a natural uranium axial blanket of 15.24 cm length at the top and bottom of the fuel rod. The burnable absorber rods are symmetrically radially dispersed within the fuel assembly such that intrabundle power peaking is minimized. The burnable absorber material for both ZrB{sub 2} and Er{sub 2}O{sub 3} is axially zoned to the central 304.8 cm of the absorber-bearing fuel rods. The fuel management was constrained such that the thermal and safety limitations of FIH < 1.65, F{sub q} < 2.50, and moderator temperature coefficient (hot zero power) < 9.0 pcm/{degrees}C were simultaneously achieved. Themore » maximum long-term operating soluble boron concentration was also limited to 1250 ppm reflecting other system limitations. Energy requirements of 446 effective full-power days (EFPD), including 14 EFPD of power coastdown, were assumed.« less" @default.
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- W39299706 date "1995-12-31" @default.
- W39299706 modified "2023-09-23" @default.
- W39299706 title "Benchmark comparison of ZrB{sub 2} and erbia PWR integral fuel burnable absorbers" @default.
- W39299706 hasPublicationYear "1995" @default.
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