Washbasins and sinks are typically placed in several locations in hospital supply centers:

• In scrub and dressing areas near operating theatres and procedure rooms. These are used by surgeons and other medical staff to scrub in by thoroughly washing their hands and arms before surgery or a procedure.
• Near medication preparation areas and rooms. These are used for hand washing to ensure proper hygiene when preparing and handling medications.
• Near clean utility rooms. These are used when handling clean linens, instruments and other supplies to wash hands and maintain hygiene.
• Near soiled utility rooms. These are used when handling soiled or contaminated linens, instruments and waste to wash hands and avoid cross-contamination.
• Near personal care areas like lounges, locker rooms and restrooms for staff use. These promote hand hygiene for staff at the beginning and end of shifts.
• Near patient care areas like nursing stations, patient rooms, exam rooms, etc. These are for staff to wash hands before and after contact with patients to reduce infection risks.
• Near food preparation areas and kitchens. These are used by dietary and food service staff to properly wash hands and maintain hygiene when handling and preparing patient meals.

So in summary, washbasins and sinks are placed in any area of a hospital supply center where promoting hand hygiene, reducing infection risk and controlling contamination are important. Their locations are chosen carefully based on the specific types of activities in each area.