Safety Assessment of Vertical Storage Tank Based on Robot Ultrasonic Online Inspection

被引：0
作者：
Lei He
Jiachong Wu
Xingyu Wang
Yewei Kang
Zhiqiang Huang
Huazhang Wang
Weiwei Wang
机构：
[1] Southwest Minzu University,College of Electrical Engineering
[2] PipeChina North Pipeline Company,College of Electromechanic Engineering
[3] Southwest Petroleum University,undefined
来源：
Journal of Nondestructive Evaluation | 2023年 / 42卷
关键词：
Safety assessment; Corrosion; Storage tank; Online inspection; Robot;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Robot online inspection is a new technology for nondestructive and quantitative detection corrosion of vertical storage tank without emptying the liquid. The storage tank safety assessment methods for robot online inspection are still at the exploratory stage of development. An online inspection robot has been developed by the authors. This paper studies the evaluation methods of bottom plate corrosion with this robot detection. Aiming to characterize localized corrosion and pitting corrosion, multi-angle evaluation indices are proposed. Mathematical models based on reliability evaluation are derived. Above models and evaluation methods are then validated by a case study. Assessment results show that the maximum corrosion depth of storage tank floor is 2.44 mm, the residual useful life of the storage tank is 5 years, and the center coordinates of localized corrosion region of numbered A is (0.58 m, − 0.01 m), the area is 0.484 m2, and the average corrosion depth is 2.03 mm. Abundant quantitative conclusions are obtained by using the proposed evaluation methods, instead of rough qualitative descriptions. This research provides references for storage tank safety assessments and formation standard based on robot online inspection.
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