In:
Nuclear Energy and Technology, Pensoft Publishers, Vol. 8, No. 3 ( 2022-09-27), p. 203-209
Abstract:
In VVER reactor plants, it is impossible to completely exclude the appearance of loose, loosely fixed and foreign objects in the main circulation circuit. Operational experience shows that early detection and estimation of the parameters of such incidents can provide the time required to eliminate or minimize damage to the main equipment of the reactor plant. For this reason, most modern power units with pressurized water reactors (PWR, VVER) are equipped with a loose parts monitoring system (LPMS). At the units under construction, these systems are laid down as standard ones; the power units put into commercial operation in the Soviet period were also equipped with them. The requirements for them are established by international standards. Ongoing research work in this area is aimed at determining the root cause of the acoustic anomaly and the localization of its epicenter. Also, no less significant are the works aimed at determining the mass of a loose object (LO). The most precise definition of this parameter will make it possible to have an idea of the nature of the LO before its withdrawal from the primary circuit and to conclude about whether this object is accidentally found or it is a detached part of the steam generators, main circulation pumps, internal devices or shut-off and control valves.
Type of Medium:
Online Resource
ISSN:
2452-3038
DOI:
10.3897/nucet.8.94106
DOI:
10.3897/nucet.8.94106.figure1
DOI:
10.3897/nucet.8.94106.figure2
DOI:
10.3897/nucet.8.94106.figure3
DOI:
10.3897/nucet.8.94106.figure4
DOI:
10.3897/nucet.8.94106.figure5
Language:
Unknown
Publisher:
Pensoft Publishers
Publication Date:
2022
detail.hit.zdb_id:
2858592-6
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