Reducing Manufacturing Risk During Cleanroom Maintenance And Downtime

Cleanroom product manufacturing is common across multiple industries including pharmaceutical, biotech, ophthalmological, and food and beverage manufacturing. The procedures, acceptable practices, and quality metrics during periods of production are often clearly delineated within industry standards documents or internal SOPs. Environmental Monitoring (EM) is typically a key element of production, as manufacturing in controlled environments would be unnecessary were it not important to the final product quality. Even within the best manufacturing environment, however, there are periods of downtime. The causes may be planned, such as shutdown during holiday or scheduled maintenance, or unplanned, such as from equipment malfunction or product quality issues.

Regardless of the cause, manufacturing downtime is a shift from nominal cleanroom state and processes. Particularly given the unique activities which may occur during downtime, including equipment maintenance, investigations, or construction, risks not typically expected within the cleanroom environment and standard procedures can exist. While a thorough cleaning and disinfection is performed prior to returning a room to its production state, there is a need to maintain environmental quality within controllable levels.