A flywheel for a pump, and in particular a flywheel having a number of high density segments for use in a nuclear reactor coolant pump. The hydrant-installed component includes a collar divided into four equal quadrants, which are installed around the upper end of the hydrant barrel and below the head or cap of the hydrant. Moreover, depending on the customer data access pattern, a certain cloud provider may be cheaper than another. The display unit displays a first operation screen that includes a first graphic generated from the area information and the identification information, and a second operation screen that includes a second graphic generated from the lighting information.