TL;DRAbstract
Reactor noise techniques have been used to determine how the quantity ²eff/I changes when water regions of several sizes and shapes are introduced into a light water lattice of plutonium-enriched rods. The measured value of ²eff/l for the unperturbed uniform lattice was 89 ± 2 sec−1. This value was reduced significantly as successively larger water regions were introduced into this lattice. Calculated values of Beff/l obtained with a typical reactor design calculational method, agree with measured results to within ±5% for these experiments.
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Reactor noise techniques have been used to determine how the quantity ²eff/I changes when water regions of several sizes and shapes are introduced into a light water lattice of plutonium-enriched rods. The measured value of ²eff/l for the unperturbed uniform lattice was 89 ± 2 sec−1. This value was reduced significantly as successively larger water regions were introduced into this lattice. Calculated values of Beff/l obtained with a typical reactor design calculational method, agree with measured results to within ±5% for these experiments.
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