1.   Because steam systems have a mixture of steam, water and air flowing through the pipes, rust and sediment quickly collect in the pipes and boiler.

2.   Air vents on steam systems, Berry said, allow cooler air to escape as the steam fills the system.

3.   In the steam system the boiler water is converted into steam that rises through pipes into radiators.

4.   Interwoven with the step-by-step account of the building and testing of W.I.S.O.R. is a brief history of the steam system the robot has been designed to repair.

5.   Steam systems have a water gauge that shows the water level in the boiler.

6.   Still, people who live in older homes find that a steam system can provide comfortable, dependable heat.

7.   The best machines work with a pump system, which does not burn the coffee, as a steam system can.

8.   This is not a problem with either hot water or steam systems, but it can be a significant problem with forced-air systems.

9.   With a steam system know the location of the glass and the procedure for filling the boiler, which is opening one valve.

10.   The blast was caused by a technical fault in the steam system in the laundry room, the report said.