Which component is part of the system used to order and receive food supplies at installation levels?

The component used to order and receive food supplies at installation levels is the STORES Web. This system is specifically designed for the management of food inventory, allowing for the seamless ordering and tracking of food supplies necessary for operations. By utilizing the STORES Web, personnel can efficiently manage food supply logistics, ensuring that installations have the necessary resources to meet their demands.

The other options do not serve the same purpose. Food safety protocols are essential for maintaining health standards but do not facilitate the ordering process. Local procurement policies govern how purchases are made but do not provide a direct means of managing food supplies. Catering services directives might outline standards and procedures for food service delivery but do not encompass the ordering and receiving aspect of food supplies in installations. Thus, STORES Web is the correct answer, as it directly addresses the required functions of ordering and receiving food supplies.