A Calculation Method for the Sloshing Impact Pressure Imposed on the Roof of a Passive Water Storage Tank of AP1000

There is a large water storage tank installed at the top of containment of AP1000, which can supply the passive cooling. In the extreme condition, sloshing of the free surface in the tank may impact on the roof under long-period earthquake. For the safety assessment of structure, it is necessary to...

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Bibliographic Details
Published inScience and Technology of Nuclear Installations Vol. 2016; no. 2016; pp. 1 - 8
Main Authors Liu, Yu, Dang, Junjie, Zeng, Xiaojia, Lu, Dao-gang
Format Journal Article
LanguageEnglish
Published Cairo, Egypt Hindawi Limiteds 01.01.2016
Hindawi Publishing Corporation
Hindawi Limited
Wiley
Subjects
Assessments
Containment
Earthquakes
Electric power
Engineering
Equipment performance
Evaluation
Experiments
Ice
Mathematical analysis
Methods
Nuclear power plants
Nuclear reactors
Numerical analysis
Pressure distribution
Properties
Roofs
Seismic response
Storage tanks
Studies
Theory
Water storage
Water tanks
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Summary:There is a large water storage tank installed at the top of containment of AP1000, which can supply the passive cooling. In the extreme condition, sloshing of the free surface in the tank may impact on the roof under long-period earthquake. For the safety assessment of structure, it is necessary to calculate the impact pressure caused by water sloshing. Since the behavior of sloshing impacted on the roof is involved into a strong nonlinear phenomenon, it is a little difficult to calculate such pressure by theoretical or numerical method currently. But it is applicable to calculate the height of sloshing in a tank without roof. In the present paper, a simplified method was proposed to calculate the impact pressure using the sloshing wave height, in which we first marked the position of the height of roof, then produced sloshing in the tank without roof and recorded the maximum wave height, and finally regarded approximately the difference between maximum wave height and roof height as the impact pressure head. We also designed an experiment to verify this method. The experimental result showed that this method overpredicted the impact pressure with a certain error of no more than 35%. By the experiment, we conclude that this method is conservative and applicable for the engineering design.
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ISSN:1687-6075
1687-6083
DOI:10.1155/2016/1613989