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A method for evaluating the structural integrity of buried liquid low level waste tanks

Jenevieve Kincaid, Melissa Peet, W. T. Thompson

Abstract

An analytical method for evaluating the structural integrity of buried (underground) tanks with specific emphasis on buckling collapse is presented. As an example, a typical tank which is part of the liquid low-level waste (LLLW) storage tank systems located at the Oak Ridge National Laboratory (ORNL) as evaluated and a margin of safety was computed. Codes associated with buried underground structure which could be used to establish design adequacy of underground storage tanks are identified. A finite element model of the soil and tank with nonlinear interface elements with representative soil overburden loading was developed. The effects of soil properties and variations of tank.

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Key concepts: Storage tank, Structural integrity, Geotechnical engineering, Overburden, Underground storage tank, Environmental science, Engineering, Finite element method