title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð½ÐµÐ¹ÑÑÐ¾Ð½Ð½Ð¾-ÑÐ¸Ð·Ð¸ÑÐµÑÐºÐ¸Ñ Ñ Ð°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸Ðº ÐÐÐ­Ð -1200 Ð¿ÑÐ¸ ÑÐ°Ð±Ð¾ÑÐµ Ð² Ð¼Ð°Ð½ÐµÐ²ÑÐµÐ½Ð½Ð¾Ð¼ ÑÐµÐ¶Ð¸Ð¼Ðµ Ñ Ð¸Ð·Ð¼ÐµÐ½ÐµÐ½Ð¸ÐµÐ¼ ÑÑÐ¾Ð²Ð½Ñ Ð¼Ð¾ÑÐ½Ð¾ÑÑÐ¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ°
titleType: Subtitle
title: The neutron-physical characteristics investigation of VVER-1200 under power's maneuvering regime
Creators: name: ÐÐ½Ð°Ð½ÑÐµÐ², ÐÐ»ÐµÐºÑÐ°Ð½Ð´Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: Ð²Ð¾Ð´Ð¾-Ð²Ð¾Ð´ÑÐ½Ð¾Ð¹ ÑÐ½ÐµÑÐ³ÐµÑÐ¸ÑÐµÑÐºÐ¸Ð¹ ÑÐµÐ°ÐºÑÐ¾Ñ
ÐÐÐ­Ð -1200
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Ð¼Ð°Ð½ÐµÐ²ÑÐµÐ½Ð½ÑÐµ ÑÐµÐ¶Ð¸Ð¼Ñ
VVER-1200
stationary load
stationary and transient power regimes
power maneuvering regime
fuel campaign extension

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description: Subject of diploma project is a power maneuvering regime simulation with nuclear reactor VVER-1200 under stationary load. Application of power maneuvering regime is task for optimization of power grid operation that is characterized by daily fluctuation of power consumption. As a prototype the VVER-1200 (AES-2006) is chosen. For this purpose it is necessary to make neutron-physical, technical and economical calculations.
The calculations were made in the software package SAPFIR_95&amp;RC_VVER. The micro-distributions were calculated by the SAPFIR_95 program on the basis of the solution of the transport equation in an infinite lattice of fuel rod assembly using the first-collision probability method. Nonuniformity of the neutron flux macro-distributions across the core was calculated by the RC_VVER program in the diffusive approximation. Development of the schedule of power maneuvering testing was performed under the stationary load for two moments of fuel campaign corresponding to 40 days after the start and the 40 days before the end.
Subject of special task is the fuel campaign extension. Research object is VVER-1200. The great interest in this problem is caused by errors in predicting the fuel campaign and determining the installed capacity utilization factor which in total amounts approximately 30 days. These circumstances dictate the necessity of greater freedom in choosing the term of reactor shutting down for scheduled reloading and routine maintenance of equipment. The campaign extension has been executed due to work with reduced parameters at the end of the cycle.
Considered power maneuvering regimes with VVER-1200 reactor are reliable from the point of view of fuel element safety and linear power nonuniformity. On the basis of technical and economical results the reactor produces relatively low-cost energy and has reasonable pay-back period.