Dear K Antonio
After find out in detail for this issue , this item we use total time running 20 hrs approx. in data record of shop floor we know this problem since the beginning of afternoon shift and Shift foreman inform K Pawat for approve decrease the speed 80 mpm to 60 mpm due to them found misshape problem also Operator and Inspector discuss this issue together and after that them continuous run until morning then K Warapong come to working on morning inspector bring the sampling coil to K Warapong recommend and then them take stop tag all coil in my opinion the root cause in right this
Root cause
1 Operator and Inspector not clear with appearance (accept / Reject ) of this item
2 Communicate when operator or inspector found issue not clear must discuss with supervisor
3 The tension control of pay off no 5,6 are break down
Improve point
1. Should make sample limit and attach on T/U off 3.5”#2 to easy checking and compare .
2. Training and emphasize operator and inspector must discuss with his supervisor every time when they found problem
3. Make POKA YO KE to protect when tension control pay off is multifunction .