Investigation on constraint effect of reactor pressure vessel under pressurized thermal shock

Kim, Jin-Su; Choi, Jae-Boong; Kim, Young‐Jin; Park, Youn-Won

doi:10.1016/s0029-5493(02)00282-0

Cited by 21 publications

(3 citation statements)

References 9 publications

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“…If the SIF of an assumed crack is too large this may lead to the crack initiation and in the worst case even to the failure of the RPV. The integrity of RPV has been widely studied by using one or twoparameter methods (Shum et al, 1994;Miyazaki et al, 1996;Kim et al, 2002;Qian et al, 2008;Qian and Niffenegger, 2013a,b). In order to get a more precise result, the fracture toughness from the test standards should be adjusted to different points of the crack front by considering both the in-plane and out-of-plane constraint.…”

Section: Introductionmentioning

confidence: 99%

In-plane and out-of-plane constraint effects under pressurized thermal shocks

Qian

González-Albuixech

Niffenegger

2014

International Journal of Solids and Structures

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Section: Introductionmentioning

confidence: 99%

In-plane and out-of-plane constraint effects under pressurized thermal shocks

Qian

González-Albuixech

Niffenegger

2014

International Journal of Solids and Structures

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“…Other creep modeling by Law et al [42] has been accomplished using "Theta projection" data for through-wall temperature gradients. Kim and colleagues [43] investigated the validity of the J-integral in thermal shock applications because of a constraint effect. So while much has been done in the study of thermal gradients and thermal shock, and there is precedent for modeling such loads in FEA, there is very little research in the viscoplastic effects of planar thermal gradients.…”

Section: Thermal Gradient Studiesmentioning

confidence: 99%

Stress Intensity Solutions of Thermally Induced Cracks in Combustor Liner Hot Spots Using Finite Element Analysis (FEA)

Rhymer¹

2005

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“…The stress intensity factors for the underclad and through clad defects were studied in a reactor pressure vessel subjected to a pressurized thermal shock (Marie et al, 2005). There are also many key impact studies on the PTS, including elastic and elastoplastic fracture analyses (Sun et al, 2017), constraint effect analysis (Kim et al, 2003), and structural reliability evaluation (Chou and Huang, 2014). Therefore, it is necessary to carry out thermal shock research for the HPR1000 nuclear power plant in order to study the safety assessment of the PTS of the RPV.…”

Section: Introductionmentioning

confidence: 99%

Study on Thermal Shock Failure Characteristics of RPV During IVR System Start-Up for Typical Advanced PWR

et al. 2022

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When the large pressurized water reactor in-vessel retention (IVR) system is put into operation, the outer wall of the reactor pressure vessel (RPV) will experience severe temperature fluctuations and be subjected to high internal pressure loads at the same time. In order to ensure the structural integrity of the RPV under such conditions, first, through the severe accident system program, the case that has the greatest impact on the pressure-bearing thermal shock of the outer wall of the reactor pressure vessel was selected under the station blackout (SBO) accident. Then, based on this case, the fracture mechanics finite element method was used to calculate and evaluate the pressure thermal shock (PTS) of the RPV, and the final crack size at the end of the life of the core barrel and the lower head was obtained by fatigue crack expansion calculation. The maximum ratio of the stress intensity factor correction value and corresponding limit value under the PTS transient load is about 0.874, which meets the requirements of RCC-M specification. The results of the study indicate that the RPV will not experience fracture failure when the IVR system is put into service during the station blackout accident for the HPR1000 nuclear power plant.

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Investigation on constraint effect of reactor pressure vessel under pressurized thermal shock

Cited by 21 publications

References 9 publications

In-plane and out-of-plane constraint effects under pressurized thermal shocks

In-plane and out-of-plane constraint effects under pressurized thermal shocks

Stress Intensity Solutions of Thermally Induced Cracks in Combustor Liner Hot Spots Using Finite Element Analysis (FEA)

Study on Thermal Shock Failure Characteristics of RPV During IVR System Start-Up for Typical Advanced PWR

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