{"title":"Assessment of liquids homogeneity in storage tanks in the oil industry through the comparison of uncertainties","authors":"Elcio Cruz de Oliveira","doi":"10.1007/s00769-023-01547-w","DOIUrl":null,"url":null,"abstract":"<div><p>The assessment of homogeneity of liquids in storage tanks is crucial for quality control products, commercial relations and a salient technological challenge facing the petroleum industry. This study describes a method used in the Brazilian oil industry to estimate if there is significant (vertical) segregation in large storage tanks. Here, a method based on experimental design and classical ANOVA for analyzing the experimental data to arrive at a better method to estimate if there is statistically significant segregation within the storage tanks (lack of significance is called homogeneity in the paper) was used. Although ANOVA is a suitable tool for this purpose, the results were analyzed in more detail to propose a practical method that can be used routinely. Mechanical use of the ANOVA tests may easily lead to wrong conclusions.</p></div>","PeriodicalId":454,"journal":{"name":"Accreditation and Quality Assurance","volume":"28 5","pages":"237 - 244"},"PeriodicalIF":0.8000,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00769-023-01547-w.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accreditation and Quality Assurance","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s00769-023-01547-w","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The assessment of homogeneity of liquids in storage tanks is crucial for quality control products, commercial relations and a salient technological challenge facing the petroleum industry. This study describes a method used in the Brazilian oil industry to estimate if there is significant (vertical) segregation in large storage tanks. Here, a method based on experimental design and classical ANOVA for analyzing the experimental data to arrive at a better method to estimate if there is statistically significant segregation within the storage tanks (lack of significance is called homogeneity in the paper) was used. Although ANOVA is a suitable tool for this purpose, the results were analyzed in more detail to propose a practical method that can be used routinely. Mechanical use of the ANOVA tests may easily lead to wrong conclusions.
期刊介绍：
Accreditation and Quality Assurance has established itself as the leading information and discussion forum for all aspects relevant to quality, transparency and reliability of measurement results in chemical and biological sciences. The journal serves the information needs of researchers, practitioners and decision makers dealing with quality assurance and quality management, including the development and application of metrological principles and concepts such as traceability or measurement uncertainty in the following fields: environment, nutrition, consumer protection, geology, metallurgy, pharmacy, forensics, clinical chemistry and laboratory medicine, and microbiology.
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