Sergio Limon
Land Surveyors in Bountiful, UT
License number
Utah 2774414-E202
Category
Engineer/Land Surveyor
Type
Engineer Exam - Obsolete
Address
Address
Bountiful, UT
Professional information
Method And Apparatus Inspecting Pipelines Using Magnetic Flux Sensors
US Patent:
7414395, Aug 19, 2008
Filed:
Mar 27, 2006
Appl. No.:
11/277523
Inventors:
Ming Gao - Houston TX, US
Sergio Limon - Bountiful UT, US
Richard Clark McNealy - Houston TX, US
Ron Sherstan - Cypress TX, US
Sergio Limon - Bountiful UT, US
Richard Clark McNealy - Houston TX, US
Ron Sherstan - Cypress TX, US
Assignee:
General Electric Company - Schenectady NY
International Classification:
G01N 27/72
US Classification:
324220, 324228, 324238
Abstract:
The method for detecting stress corrosion cracking (SCC) of pipelines, comprising the steps of: identifying pipeline locations and pipeline conditions that are amenable to inspection by a magnetic flux inline tool and by a TFI tool; performing two inspections on the pipeline, one inspection performed using the magnetic flux inline (MFL) tool and an other inspection performed using the TFI tool; aligning signal features resulting from the two inspections; identifying TFI signals occurring above a specified threshold; identifying MFL signals for a section of pipeline corresponding to the identified TFI signals; for the identified TFI signals, determining whether the MFL signals are below a second threshold level; designating the sections of the pipeline corresponding to identified TFI signals above the threshold and below the second threshold as a potential corrosion feature; identifying TFI signals that exceed a defined metal loss percentage; measuring a width and length of the signal features, and if the width and length of the signal feature exceed threshold crack width and length values, designating as a potential corrosion feature section of pipeline corresponding to the identified TFI signals.