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利用MCNP程序计算了不同燃耗下脉冲堆调节棒的微分价值,并采用周期法实验测量了调节棒的微分价值,对比了在不同燃耗下脉冲堆调节棒的微分价值实验值和理论计算值。结果表明:随着脉冲堆燃耗的加深,调节棒在高度200mm以下微分价值变化不明显,在高度200~390mm时,燃耗越深,微分价值越大,理论值与实验值符合很好。
Using the MCNP program, the differential value of the pulse stack adjusting rod under different burnups was calculated and the differential value of the adjusting rod was measured by the periodic method experiment. The differential value experimental data and theoretical calculation of the pulse stack adjusting rod under different burnups were compared . The results show that with the deepening of fuel consumption, the differential value of the adjusting rod under the height of 200mm is not obvious. At the height of 200 ~ 390mm, the higher the fuel consumption, the larger the differential value. The theoretical and experimental values are in good agreement.