ปิ้นล๊อคตำแหน่งไม่ตรงตำแหน่งทำให้the return guide หน้าควํ่ามาสำผัสกับ the out shell
Nov 16 During plant stop (HBM Shortage) maintenance team is cleaned (PM) of PLT-402Zs and after finished. then open steam and start running waiting process start and after 2 hrs. (16.30-18.30) recheck it was found the scratch of the outer shell due to the pin locking of the return guide out of position the resulted the touching of the outer shell