Statistical analysis of UT corrosion data from floor plates of a crude oil aboveground storage tank

Journal Article · Fri Jul 01 00:00:00 EDT 1994 · Materials Evaluation; (United States)

OSTI ID:6947533

Joshi, N R ^[1]

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1. Prairie View A M Univ., TX (United States). Dept. of Chemical Engineering

Nondestructive data collected during inspection for slow corrosion attack on large structures such as offshore oil platforms, oil pipelines, or aboveground storage tanks (ASTs), pose a dilemma. On the one hand, inspecting the entire large structure produces such a vast amount of data that it is unmanageable. On the other hand, it is difficult to approximate how much sample data would be sufficient to estimate the corroded state of the structure. The extreme value statistical analysis of the selected areas of a large structure offers a fair estimate of the maximum corrosion pit depth without examining the total area of a large structure. This statistical method was used successfully on the corrosion data gathered by ultrasonic thickness gaging a floor plate of a crude oil AST.

• OSTI ID: 6947533
• Journal Information: Materials Evaluation; (United States), Vol. 52:7; ISSN 0025-5327
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
STORAGE FACILITIES
ULTRASONIC TESTING
TANKS
DATA ANALYSIS
PETROLEUM
PITTING CORROSION
STATISTICS
STORAGE
THICKNESS GAGES
ACOUSTIC TESTING
CHEMICAL REACTIONS
CONTAINERS
CORROSION
ENERGY SOURCES
FOSSIL FUELS
FUELS
MATERIALS TESTING
MATHEMATICS
MEASURING INSTRUMENTS
NONDESTRUCTIVE TESTING
TESTING
022000* - Petroleum- Transport
Handling
& Storage