|1) There was no occurance of similar issue before.
<br/>2) Previous rust preventive oil used to loose its rust prevention properties with 3 to 4 days where as the oil stays on the part for a week or more therefore it became hard to predict the cause of corrosion.
<br/>3) Rust preventive oil previously used was not good in eliminating the moisture content from the part surface.
<br/>4) Plastic covers being non breathable caused built up of moisture content inside the cover which resulted in the initiation of corrosion before passivation.
<br/>5) Since the parts are suspended from the hanger with wires there and were not attached to any rotary actions comlpete rinsing(360 degree) cleaning was not effectively possible.
<br/>6) It was an adhessive sticker and not a permanent marking.
<br/>7) Operator had not followed the material handling instructions as per SOP-PRD-09 during processing and there was no pictorial representation.