Evaluation of the condition of the bottom of the tanks for petroleum products-forecast of the remaining operating life

Povše, Aleš (author), Skale, Saša (author), Vojvodič-Tuma, Jelena (author)

Corrosion rate measurements in the tank enable us to develop a new model for predicting the remaining operating period of the tank. The empirical model for the study of bottom plate thicknesses and corrosion pits is more conservative than the standard linear model, as it considers the autocatalytic nature of the corrosion process. We used the double exponential distribution of maximum values (Gumbel's) to evaluate the maximum depth of pits, and the double exponential distribution of minimum values to evaluate the minimum values of the plate thickness. A comparison of the values of the parameters obtained using linear extrapolation and exponential models indicates the unreliability of linear extrapolation, since disregarding dynamic processes underestimates the actual rate of corrosion.

• Language: English
• Keywords: pitting, storage tank bottom, time-dependent reliability, corrosion models
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2024
• Number of pages: Str. 282-292
• Numbering: Vol. 70, no. 5/6
• PID: 20.500.12556/RUL-159954
• UDC: 620.193
• ISSN on article: 0039-2480
• DOI: 10.5545/sv-jme.2023.682
• COBISS.SI-ID: 203138819
• Publication date in RUL: 01.08.2024

Record is a part of a journal

• Title: Strojniški vestnik
• Shortened title: Stroj. vestn.
• Publisher: Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.
• ISSN: 0039-2480
• COBISS.SI-ID: 762116

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Title: Vrednotenje stanja dna rezervoarjev za naftne derivatenapoved preostale dobe trajanja
• Keywords: luknjičasta korozija, dno rezervoarja za skladiščenje, časovno odvisna zanesljivost, korozijski modeli