Would you please review the solvent document?
Purpose of change.
• On last week (WW38) we found water on HGA after clean at Solvent#3 (single tank) and root cause came from water mixing in auxiliary tank and recirculate to wash tank. So we need to increase PM frequency by change new chemical for auxiliary tank from quarterly PM to monthly PM instead.
i. Revise monthly PM checklist for MSC-100 and MSC-200 (single tank/double tank) item# 12.1.1 & 12.1.2 by add in checklist item#4 (b. Drain out all chemical from auxiliary tank and refill new chemical).
• Add new form Solvent MC Buyoff checklist for MSC-100 and MSC-200 (item# 12.1.6).