After the immediate corrective action again On job training is carried out with senior operator and he understand the process.(4 CRNs MPS randomly taken to check the effectiveness of the training, same was found ok) 

In 1 month duration operator is working with senior operator in shifts and senior operator will give training again on the process and MPS.

Training was found successful and operator is able to run the machine individually.(dated-20/1/2017)