In which scenario would additional certification of the facility and engineering controls be needed?

Additional certification of the facility and engineering controls is required when the primary engineering control (PEC) is significantly moved or construction occurs. This is critical because any alteration in the layout or structure of the environment where sterile compounding takes place can affect the airflow patterns, potential contamination risk, and overall sterility assurance.

When the PEC is relocated, the airflow dynamics might change, possibly creating zones that are no longer adequately sterile. Construction activities can also introduce dust, particles, and contaminants, necessitating a thorough reassessment of the facility’s safety and environmental controls. The certification ensures that all standards for sterile compounding are met after such changes, validating that the environment remains suitable for safe medication preparation.

In contrast, the other scenarios listed, while they may necessitate adjustments or training, do not inherently require a comprehensive reevaluation of the facility and its engineering controls in the same way that significant structural changes do.