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<p>The paper presents the results of testing the operation of a&#xa0;reactor at the 1st&#xa0;power unit of the Leningrad NPP‑2 in the daily load schedule mode. The tests aimed to experimentally substantiate the operation of the VVER-1200 power unit in a&#xa0;daily load schedule, as well as to develop control methods and check the operation of standard equipment. Two alternative methods for controlling the reactor power density were tested in combination with soft temperature control of reactivity by changing the steam pressure of the secondary circuit. The operation of the boron control system modernized to automatically compensate for reactor xenon poisoning was tested and adjusted. The performed tests confirmed the ability of the VVER-1200 power unit to operate in a&#xa0;daily load schedule both at the beginning and end of the fuel campaign.</p>

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Testing of a VVER-1200 reactor in a daily load schedule mode at the 1st power unit of the Leningrad NPP-2

  • 期刊论文

  • 发表日期：

    2025年8月21日

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  • P. E. Filimonov,
  • Yu. M. Semchenkov,
  • P. P. Mezencev,
  • A. E. Shirvanyants,
  • S. A. Eremeev,
  • A. V. Kalinnikov

摘要

The paper presents the results of testing the operation of a reactor at the 1st power unit of the Leningrad NPP‑2 in the daily load schedule mode. The tests aimed to experimentally substantiate the operation of the VVER-1200 power unit in a daily load schedule, as well as to develop control methods and check the operation of standard equipment. Two alternative methods for controlling the reactor power density were tested in combination with soft temperature control of reactivity by changing the steam pressure of the secondary circuit. The operation of the boron control system modernized to automatically compensate for reactor xenon poisoning was tested and adjusted. The performed tests confirmed the ability of the VVER-1200 power unit to operate in a daily load schedule both at the beginning and end of the fuel campaign.