การพัฒนาชุดฝึกอบรมช่างเชื่อมท่อวัสดุพอลิเอทิลีนความหนาแน่นสูง THE DEVELOPMENT OF TRAINING PACKAGE FOR HDPE PIPE WELDER

Abstract

This research aims to develop a training program for high-density polyethylene (HDPE) pipe welders and to evaluate training program efficiency. The research process consists of five main steps: 1) reviewing relevant literature, 2) developing the training program, 3) evaluating its quality, 4) implementing the program, and 5) analyzing the results. The target group includes 12 welders and metal fabrication workers selected through purposive sampling. Research instruments include test sheets and a practical evaluation forms, with statistical analysis using mean, standard deviation, and the E1/E2 from training program efficiency. For the results, the training program includes five topics: 1) equipment used in welding, 2) material and tool preparation, 3) adjustment of welding parameters, 4) the HDPE pipe welding process, and 5) inspection of welded joints. Moreover, the findings reveal that the training program achieved an efficiency of 87.84/83.56, surpassing the set criteria of 75/75, with an average pracitical performance score of 87.50%.