The Central Sterile Supply Department (CSSD) is responsible for providing sterile medical supplies to hospital units, including cleaning, sterilizing, and distributing items like surgical instruments and linens. It operates under strict protocols, focusing on infection control, maintaining inventory, and ensuring a safe environment for patients and staff. The CSSD layout must facilitate a unidirectional workflow with separate areas for clean and contaminated items, and staffing is determined based on the number of beds in the hospital.