Subcriticality determination of nuclear reactor

• Main Authors: V. I. Borysenko, O. P. Volokh, V. V. Goranchuk, M. M. Sydoruk
• Format: Article
• Language: English
• Published: Institute for Nuclear Research, National Academy of Sciences of Ukraine 2014-03-01
• Series: Âderna Fìzika ta Energetika
• Subjects: subcriticality; reactivity; statistical methods; Rossi-α method; research reactor; power nuclear reactor
• Online Access: http://jnpae.kinr.kiev.ua/15.1/Articles_PDF/jnpae-2014-15-0035-Borysenko.pdf

In this article the subcriticality determination of nuclear reactor is considered. Emphasized that, despite the requirements of regulatory documents on the subcriticality determination of VVER from the beginning of their operation, so far, this problem has not been solved. The results of subcriticality determination of Rossi-α method of the WWR-M is presented. The possibility of subcriticality determination of VVER is considered. The possibil-ity of subcriticality determination of Rossi-α method with time resolution is of about 100 microseconds is also considered. The possible reasons for the error in subcriticality determination of the reactor are indicated.