Cost-effectiveness analysis of tank and base foundation diagnostics without paintwork removal

Petr Chepur,Evgeniy Tikhanov,Alesya Gruchenkova,Vadim Krivorotov,А А Тарасенко

doi:10.1051/matecconf/201926507005

Petr Chepur, Evgeniy Tikhanov + Show 3 more

Open Access

https://doi.org/10.1051/matecconf/201926507005

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Abstract

The article describes the particular qualities of application of a cylindrical steel tanks' and base foundation technical inspection method without removal of a protective covering. The model is formed and the basic parameters of an estimation of economic efficiency of carrying out of diagnostics are determined. The economic efficiency of application of the modern method of vertical steel tank examination is estimated. The high economic efficiency of the new technological method is substantiated in comparison with the traditional method. It is established that the advantage of using the innovative diagnostic method in comparison with the traditional method is fully manifested when it is necessary to maintain a large fleet of tanks. It is calculated that, given the design parameters, the savings in the use of the method proposed by the authors in the long term are 1773.2 million rubles compared with traditional. The use of a new technological method - the technology of diagnosing vertical steel tanks without removing the protective coating, allows to reduce the total cost of conducting diagnostics with a discount of 8.7 times. Dependences were obtained of the discounted volume of expenses on acquisition of the equipment and the subsequent diagnostics of vertical steel tanks on the operation time of the vertical steel tanks.

Highlights

To ensure the conditions of reliable and safe operation of the pipeline oil transportation system, it is necessary to timely conduct and organize work on the technical diagnostics of its main elements [1-4]
In order to assess the feasibility of acquiring a specialized technical complex consisting of equipment and software that allows full technical diagnostics of vertical steel tanks without compromising the integrity of the protective coating and subsequent application of a modern method of diagnostic inspection of tanks, the authors carried out a comparative analysis of the effectiveness of traditional and innovative methods
The analysis shows that the costs associated directly with the diagnostics of vertical steel tanks by the innovative method are 1,773.2 million rubles or 8.7 times less than the similar costs for the diagnostic examination by the traditional method

Summary

Introduction

To ensure the conditions of reliable and safe operation of the pipeline oil transportation system, it is necessary to timely conduct and organize work on the technical diagnostics of its main elements [1-4]. Large vertical steel tanks, being an integral link in the technological chain of pipeline oil transportation, should be in a fault-free condition for the entire period of operation [5-13]. For this purpose, the domestic industry regulations define the terms and volumes of a regular diagnostic examination of the vertical steel tanks. Using the traditional method (Figure 1), up to 80% of the cost of conducting a full diagnostic examination of the VST is associated with the work on removing and restoring the anticorrosion coating. The description of the sequence of testing by traditional and innovative methods is presented below

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