WALL THICKNESS MEASUREMENT OF CARBON STEEL PIPES BY USING DIGITAL RADIOGRAPHY

Öz

One of the major field NDT areas is pipe inspection, which involves testing for corrosion and erosion as well as examining the quality of welds in pipes. In order to perform of the wall thickness measurements that include pitting, we can use one of the two following techniques: Tangential Technique and Double Wall Technique. In this study, carbon steel pipes which have 2, 3, and 4 inch diameter were irradiated from 1m by Gamma-Ray, besides, their histogram were analyzed via Tangential Technique for different periods. Furthermore, the results were compared by gathered results which measured by Ultrasonic Test.

Anahtar Kelimeler

• Computed Radiography,Pipe Wall Thickness,Tangential Technique,Double Wall Technique,Carbon

Abstract

Kaynakça

1. 1. Fengqi, H., (2005). Validation of Protocols for Corrosion and by Deposit Determination in Pipes By Radiography. Development of protocols for corrosion and deposits evaluation in pipes by radiography, 37.
2. 2. Edalati, K., Rastkhah, N., Kermani, A., Seiedi, M., and Movafeghi, A., (2006). The use of Radiography for Thickness Measurement and Corrosion Monitoring in Pipes. International journal of pressure vessels and piping, 83(10), 736-741.
3. 3. Edalati, K., Rokrok, B., Kermani, A., Seiedi, M., Movafeghi, A., and Shahandeh, M., (2007). Scattering and Image Contrast Simulation for Double Wall Radiography of Pipes. International journal of pressure vessels and piping, 84(7), 441-450.
4. 4. Hamzah, A.R., Muhammad, A., Ismail, M.P., Ibrahim, A.N., Mohamed, A.A., Saad, S., and Ahmad, S., (2002). Corrosion Evaluation in Insulated Pipes by Non Destructive Testing Method.