Analysis of experiments on studying condensation induced water hammer in the emergency injection pipeline into the pressurizer

Аuthors

Churkin A. N., Kryzhanovsky V. I., Bykov M. A., Posysaev D. A., Baisov A. M.^*, Kucherova V. V.

OKB GIDROPRESS JSC, Podolsk, Russia

*e-mail: baisov75@gmail.com

Abstract

The report gives brief description of the experiments conducted at OKB GIDROPRESS JSC on studying conditions of condensation induced water hammer emergency in the emergency injection pipeline into the pressurizer of the VVER-1200 and VVER-TOI reactor. It presents the results of the experiments computational modeling, accomplished with the KORSAR/GP software for the analysis of the processes proceeded in the pipeline as well. The report confirms the capability of the program to predict the closed vapor cavities origination, which are the mandatory condition for the condensation induced water hammer occurrence, and notes the necessity of further improvement of the computational model as applied to the condensation induced water hammer analysis problems.

Keywords:

VVER, pressurizer, emergency injection pipeline, condensation induced water hammer, KORSAR/GP

References

1. Griffith P. Screening Reactor Steam/Water Piping Systems for Water Hammer. NUREG/CR-6519, 1997.
2. Bezrukov Yu.A., Lisenkov E.A., Seleznev A.V. Analiz vozmozhnosti gidroudarov v pervom konture reaktorov VVEHR [Analysis of the possibility of hydraulic water hammer in the first circuit of VVER reactors]. Materialy VI Mezhdunarodnoi nauchno-tekhnicheskoi konferentsii «Obespechenie bezopasnosti AEHS s VVEHR» (Podolsk, 26–29 maya, 2009). Moscow: Gidropress, 2009.
3. Volkov G.Yu. Issledovanie kondensatsionnykh gidroudarov v gorizontal'nykh i slabonaklonnykh truboprovodakh [Investigation of condensation water hammer in horizontal and slightly inclined pipelines]. Ph. D. thesis. Moscow, 2021, 233 p.
4. Churkin A.N., Bogdanov A.S., Tolmachev D.G. et al. Experimental studies of condensation-induced water hammers in the VVER reactor pipelines. Problems of Atomic Science and Engineering. Series: Physics of Nuclear Reactors, 2019, iss. 2, pp. 62–69.
5. Churkin A.N., Bogdanov A.S., Lisenkov E.A., et al. Experimental Investigation of Condensation Water Hammers in Emergency Injection Pipeline of Pressurizer. Problems of Atomic Science and Engineering. Series: Physics of Nuclear Reactors, 2023, iss. 3, pp. 13–22.
6. Migrov Yu.A., Volkova S.N., Yudov Yu.V. et al. KORSAR –teplogidravlicheskii raschetnyi kod novogo pokoleniya dlya obosnovaniya bezopasnosti AEHS s VVEHR [KORSAR. A Thermohydraulic Code Of The New Generation For Substantiating The Safety Of NPSs With VVER Reactor]. Teploehnergetika, 2001, no. 9, pp. 36–43.
7. Churkin A.N., Posysaev D.A., Baisov A.M., Pribaturin N.A., Lezhnin S.I., Alekseev M.V. CalculationBased Study of Condensation-Induced Water Hammers in Reactor Plant Pipelines. Problems of Atomic Science and Engineering. Series: Physics of Nuclear Reactors, 2018, iss. 2, pp. 87–95.