Passive depressurization accident management strategy for boiling water reactors

Liu, Maolong; Erkan, Nejdet; Ishiwatari, Yuki; Okamoto, Koji

doi:10.1016/j.nucengdes.2014.12.020

Cited by 2 publications

(2 citation statements)

References 24 publications

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“…condensation in the water tank, it is designed to be operated even in an SBO accident . If both PAFSs fail, depressurization of the RCS is necessary for low-pressure injection by normal safety injection tanks (SITs) (Liu et al, 2015). This strategy however causes a loss of RCS inventory which may result in limited natural circulation in the primary coolant system when the PAFSs are restored.…”

Section: Introductionmentioning

confidence: 99%

Optimal operation of hybrid-SITs under a SBO accident

Jeon

Heo

Kang

2016

Nuclear Engineering and Design

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Section: Introductionmentioning

confidence: 99%

Optimal operation of hybrid-SITs under a SBO accident

Jeon

Heo

Kang

2016

Nuclear Engineering and Design

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“…Boiling water reactor primary circuit uses austenitic stainless steel as material which is most sensitive to intergranular stress corrosion (IGSCC) and IGSCC mainly happen in the weld heat affected zone. Although the intergranular stress corrosion is not an important problem to the safety of boiling water reactor [8], but poses a threat to feasibility and economy of boiling water reactor. In order to reduce the intergranular stress corrosion, it is necessary to make the electrochemical potential (ECP) of reactor structural materials fell to below -230 mV (SHE).…”

Section: Introductionmentioning

confidence: 99%

The Influence of Dissolved Oxygen Concentration on the Corrosion Resistance of 316L Stainless Steel under Simulated BWR Primary Circuit Water Environment

Wang¹,

Liang²,

Li³

et al. 2014

Proceedings of the 2015 International Conference on Material Science and Applications

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Austenitic stainless steels have been widely applied in the primary circuit of BWR. However, the corrosion caused serious damage to the equipment, affecting the service life of the plant, and lead to many security and economic danger. The oxide film generating on metal surface can slow down the corrosion rate in certain water chemical environment. Researches have shown that the concentration of dissolved oxygen is one of the important factors that affect corrosion resistance of the oxide film. This issue by simulating BWR primary circuit operating mode and controlling the concentration of dissolved oxygen in water solution, studied the corrosion of stainless steel in the autoclave to evaluate the effects of dissolved oxygen on corrosion. Experiments with 316L stainless steel as raw material, after forming an oxide film corrosion experiment, potentiodynamic scanning method and Mott-Schottky plot method were employed to discuss the performance of the stainless steel surface oxidation film. The potentiodynamic polarization curve results indicated that under the dissolved oxygen concentration of 0.28 mg/L and 8.20 mg/L, their current densities of oxidation film were close and significantly less than 0.50 mg/L. Mott-Schottky plot results indicated that under the dissolved oxygen of 8.20 mg/L the carrier concentration of oxide film was the lowest and the corrosion resistance remained its best performance.

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Passive depressurization accident management strategy for boiling water reactors

Cited by 2 publications

References 24 publications

Optimal operation of hybrid-SITs under a SBO accident

Optimal operation of hybrid-SITs under a SBO accident

The Influence of Dissolved Oxygen Concentration on the Corrosion Resistance of 316L Stainless Steel under Simulated BWR Primary Circuit Water Environment

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