The study of welding quality in shipyard based on non-destructive testing method by using radiographic testing

Abstract

This research work had to investigate the welding quality in one of the shipyard project, Which is ] X 38 m Seaworks (J ] 45) based On the non-destructive testing method (NDn using the radiographic testing that has been inspect by Prescan Sdn Bhd. This inspection is following the American Bureau of Shipping (ABS) certification. This shipyard project was taken from the Kay Marine Kuala Terengganu Sdn. Bhd. The material use in this shipyard project was aluminium with GMA W (gas metal arc welding) process. The data was gathering based on reports made by the quality control officer, based on Ship Classification Malaysia (SCM) standard using radiography test (X-ray test) at selected joint. Based on the radiographic data they were 30 section take place. Length of defect of the radiographic film was calculated by using meter tape and ruler on the light source. From the data analysis in this project, they were 216mm of reject length (defect in welding) over 9000mm of total length of weld. It showed that 2.45% of the total weld was defect. Weld defect was caused by the welder itself and from data analysis welder number 16 make most defects in this project. The data were collected within a week to finish with help from the quality control officer of the Kay marine Sdn Bhd. Analyze of data is by using Microsoft Excel/ Spreadsheet and Minitab Statistical Software.