 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
|
||||||||||||||
|
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
|
 |
 |
 |
 |
 |
 |
 |
|
||||||||
 |
|
|
CORROSION INSPECTIONIRISNDT's Corrosion Inspection Services combine ultrasonic and visual inspection information. Based on these, the reliability of operating process equipment is assessed. These inspections satisfy pressure vessel regulated inspection requirements.
Corrosion inspection can be performed on ferrous, non-ferrous, and alloyed metallic materials, as well as non-metallic materials.
Ultrasonic corrosion inspection applications include pulsed echo, A-Scan, B-Scan and C-Scan corrosion mapping. Inspections are commonly performed on pressure vessels, exchangers, process piping, gathering and transmission pipelines, boiler tubes, and storage tanks.
Ultrasonic corrosion inspection applications include pulsed echo, A-Scan, B-Scan and C-Scan corrosion mapping. Inspections are commonly performed on pressure vessels, exchangers, process piping, gathering and transmission pipelines, boiler tubes, and storage tanks.
Repeatable, consistent ultrasonic corrosion surveys are obtained accessing only one side of the part examined. Corrosion rates, retirement dates, inspection due dates, and the Maximum Allowable Operating Pressure (MAOP) of locally corroded areas are calculated with advanced software. Profile (shadow) radiographs combined with ultrasonics can provide views of access-restricted areas, and of whole components or equipment sections.
The reliability of a corrosion inspection depends greatly upon the skills, experience, and certification of the inspectors. To perform corrosion inspections:
- The surface to be inspected must be clean and free of loose paint, oxides and/or non-homogenous coatings; this ensures acceptable ultrasonic transmission to the part.
- The areas to be inspected must be free of insulation and/or inspection ports must be installed to allow access.
- The service temperature must be considered. Temperatures greater than 360° F affect sound velocity and inspection results.
IRISNDT reports are tailored to address customer specific requirements. Hard copy and/or compact disc reports include static data, minimum remaining wall thickness, inspection summaries, and CAD drawings. The inspection summaries are a key component of IRISNDT reports; they allow the equipment owner/user to readily assess what repairs are required.
IRISNDT personnel prepare daily field reports:
- To evaluate promptly the data collected.
- To allow equipment maintenance personnel and the inspection technician to review the data prior to making repairs.
IRISNDT personnel back up daily the data collected to IRISNDT's data management servers:
- To minimize the possibility of losing data if the equipment malfunctions in the field.
- To allow IRISNDT's office support personnel to review the data.
