1. Retrain and meeting all person in charged to acknowledge why problem occurred and brain storm for the improvement.
2. Improve water system (Which already finished on 29/1 as diagram)
2.1 Change the water reserved tank before and after filter
2.2 Changed activated carbon and regenerated other filter.
2.3 Change the water tank area to be easier for inspection and installing roof to prevent sun light which cause the lichen.
3. Issue new water tank cleaning manual and inspection for engineer and QA staff (WEN 020)
4. Retrain worker to sensory the suspicion muddy scent in product during process, water and FG.
(After expert from customer trained on 20/1 we have first course on 21/1)