Which requirement helps maintain clean HD handling areas between HD and non-HD spaces?

• A. Sharing equipment between areas
• B. No cleaning procedures
• C. Strict separation of spaces with validated cleaning between them
• D. Using the same storage for both areas

Answer: (C)

Maintaining clean HD handling areas relies on strict separation of spaces with validated cleaning between them. The physical separation creates a barrier to prevent HD residues and contamination from moving between HD and non-HD areas. But separation alone isn’t enough—the cleaning between these spaces must be validated to prove it reliably removes residues to defined safety limits. This combination directly reduces cross-contamination risk and protects both staff and the product environment.

Why the other approaches don’t fit: sharing equipment, skipping cleaning procedures, or using the same storage would defeat the barrier and allow residues or contaminated materials to cross into non-HD spaces, increasing exposure and contamination risk.