![[Lesson Learned] Falling Coupon On Ms Steam Pipe Hot Tapping](https://ilmu.adhi.co.id/pluginfile.php/14391/course/overviewfiles/Cover_Falling%20coupon.png)
On June 1st 2020, start hot tap after preparation has accepted. After finish drilling, and machine unmounted, a coupon is not found. Check pilot and cutter have Catch Wire (pin) have broken after drilling
- Teacher: WAHYUDI WAHYUDI
- Enrolled students: 5