This paper provides practical considerations and strategies for protecting cleaned equipment. It provides a justification and rationale for the acceptability of residual moisture following cleaning for routine reuse of equipment while promoting a post-cleaning condition of ‘drained’ after cleaning or ‘dry’ for process equipment intended for long-term storage. It also discusses the factors that contribute to residual water post-cleaning and the considerations, supporting rationale, and justifications to rationalize and justify what levels of residual water may be acceptable.

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