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Journal Articles

Analysis of pressure- and temperature- induced steam generator tube rupture during PWR severe accident initiated from station blackout

Hidaka, Akihide; Maruyama, Yu; Nakamura, Hideo

Proceedings of 6th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, Operations and Safety (NUTHOS-6) (CD-ROM), 15 Pages, 2004/00

Severe accident studies showed that Direct Containment Heating issue was resolved for PWRs because a creep rupture at pressurizer surge line would occur prior to the melt-through of Reactor Pressure Vessel during station blackout (TMLB'). However, it was recently concerned that, if the secondary system is depressurized during TMLB', the creep rupture at SG U-tubes would occur earlier than the surge line. This pressure- and temperature-induced SG U-tube rupture (PTI-SGTR) is not preferable because of the increase in offsite consequences. The SCDAP/RELAP5 analyses by USNRC showed that the surge line would fail earlier than the U-tubes. However, the analyses used a coarse nodilization for steam mixing at the SG inlet plenum that could affect the temperature of U-tubes. To investigate the effect of steam mixing, an analysis was performed with MELCOR1.8.4. The analysis showed that the surge line would fail earliest during TMLB' while the U-tubes could fail earliest during TMLB' with secondary system depressurization. Further investigation is needed for occurrence conditions of PTI-SGTR.

Journal Articles

Sub- to supercritical flow transition in a horizontally-stratified two-phase flow in PWE hot legs

; Kukita, Yutaka

Journal of Nuclear Science and Technology, 33(9), p.696 - 702, 1996/09

 Times Cited Count:1 Percentile:14.78(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Subcritical to supercritical flow transition in a horizontal stratified flow

; Kukita, Yutaka; *

The 3rd JSME/ASME Joint Int. Conf. on Nuclear Engineering (ICONE),Vol. 1, 0, p.131 - 136, 1995/00

no abstracts in English

Journal Articles

Three-dimensional thermo-fluiddynamic analysis of gas flow in hot leg with fission product deposition

Maruyama, Yu; Igarashi, Minoru*; Nakamura, Naohiko; Hashimoto, Kazuichiro; Sugimoto, Jun

The 3rd JSME/ASME Joint Int. Conf. on Nuclear Engineering, Vol. 3, 0, p.1247 - 1251, 1995/00

no abstracts in English

Journal Articles

Analysis of reactor piping behavior against thermal loads during severe accident

Hashimoto, Kazuichiro; Nakamura, Naohiko; Igarashi, Minoru*; Maruyama, Yu; Sugimoto, Jun

The 3rd JSME/ASME Joint Int. Conf. on Nuclear Engineering, Vol. 3, 0, p.1241 - 1246, 1995/00

no abstracts in English

Journal Articles

Terminating core boiling by hot-leg injection in cold-leg small-break LOCA

Kumamaru, Hiroshige; Kukita, Yutaka

Int. Conf. on New Trends in Nuclear System Thermohydraulics,Vol. 1, 0, p.119 - 126, 1994/00

no abstracts in English

Journal Articles

Results of 0.5% hot-leg break loss-of-coolant accident experiments at ROSA-IV/LSTF; The effect of break orientation

; Kukita, Yutaka; Yonomoto, Taisuke; *

Nuclear Technology, 96, p.202 - 214, 1991/11

 Times Cited Count:10 Percentile:72.86(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

Data report for ROSA-IV LSTF 10% hot leg break experiment Run SB-HL-04

Kukita, Yutaka; Nakamura, Hideo; *; *; *; Anoda, Yoshinari; Kumamaru, Hiroshige; Suzuki, Mitsuhiro; ; Yonomoto, Taisuke; et al.

JAERI-M 91-040, 122 Pages, 1991/03

JAERI-M-91-040.pdf:3.42MB

no abstracts in English

Journal Articles

Flow regime transition in stratified two-phase flow including a hydraulic jump

Katayama, Jiro; Nakamura, Hideo; Kukita, Yutaka

Proc. of the Int. Conf. on Multiphase Flows 91-TSUKUBA,Vol. 1, p.7 - 10, 1991/00

no abstracts in English

Journal Articles

Small break experiments LP-SB-1 and LP-SB-2 results and calculations

*; Anoda, Yoshinari; Kukita, Yutaka

The OECD/LOFT Project; Achievements and Significant Results, p.145 - 163, 1991/00

no abstracts in English

JAEA Reports

Data report for ROSA-IV LSTF 10% hot leg break experiment; Run SB-HL-02

Kukita, Yutaka; *; *; *; Anoda, Yoshinari; Kumamaru, Hiroshige; Suzuki, Mitsuhiro; ; Yamamoto, Nobuo; Nakamura, Hideo; et al.

JAERI-M 90-039, 122 Pages, 1990/03

JAERI-M-90-039.pdf:3.38MB

no abstracts in English

JAEA Reports

Data report for ROSA-IV/LSTF 5% hot leg break experiment Run SB-HL-01

Kukita, Yutaka; *; *; Anoda, Yoshinari; Kumamaru, Hiroshige; Suzuki, Mitsuhiro; ; Yamamoto, Nobuo; Nakamura, Hideo; Yonomoto, Taisuke; et al.

JAERI-M 89-225, 117 Pages, 1990/01

JAERI-M-89-225.pdf:3.53MB

no abstracts in English

JAEA Reports

15 (Records 1-15 displayed on this page)
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