APPOINTMENT OF A SPECIALIST CONTRACTOR FOR THE DESIGN VERIFICATION, MANUFACTURE/PROCUREMENT, DELIVERY, INSTALLATION, COMMISSIONING, QUALIFICATION AND GUARANTEE OF THE D-BLOCK & N-BLOCK HEAT, VENTILATION AND AIR CONDITIONING (HVAC) SYSTEM TO THE EXISTING RADIOPHARMACEUTICAL PRODUCTION FACILITY AT ITHEMBA LABS, FAURE WESTERN CAPE, SOUTH AFRICA