RobTank Inspec – in service robotized inspection tool for hazardous products storage tanks

Abstract

PurposeTo present an entirely new technology to be used in the in‐service inspection of storage tanks for hazardous products in several different industries.Design/methodology/approachCurrent interior storage oil tank plate inspection is a very expensive and time‐consuming task. The related tasks involve high cost, several hazards to environment and the operators involved in the cleaning jobs. Several research areas were investigated during the development of this tool, fundamentally robotics and non‐destructive test tools. Initial trials in laboratory were complemented with a field test program in near‐real conditions.FindingsA new design of tool for in‐service inspection of such equipments proved to be feasible to be constructed and operated and in accordance with current safety regulations.Research limitations/implicationsNew robotics application in non‐destructive testing methodologies for application in in‐service storage equipments. The internal conditions possible to find in the interior of a storage tank, like fixtures, properties of the stored products (inflammable and aggressive), sludge and sand on the bottom, no ambient light, etc., are significant challenges to the development of such a tool.Practical implicationsDeveloped a robotized tool for inspection of the floor and walls of in‐service tanks, in order to allow an evaluation of the condition of the plates of these tanks, avoiding the long period, hazards and high costs necessary for creating the conditions for reality out of service inspection.Originality/valueThe novelty of the RobTank Inspec project could be evaluated from the two or three existing competitors in the world, and the results of the surveys undertaken.

Spatial positioning robotic system for autonomous inspection of LPG tanks

“…Some robot positioning methods have been studied, but their accuracy is not high enough. For example, a prototype Robtank location accuracy is on the order of ±0.5 m (Correia Da Cruz et al , 2005) and a tank inspection robot with acoustic positioning method has a positioning error of 0.2 m (Huang et al , 2019).…”