11 02/18 START UP PROCEDURE: Start up procedure shall conform to generally accepted practices and be done in a workman like manner. The line shall be filled slowly from any available low-pressure source. The water can be introduced from lines in service directly through valved connections or by temporary connections to taps made in the new line. If possible, all such connections should be made at the lowest point in the line to avoid air entrapment. All valves and other control points in the line that are open as the line filling begins should be closed gradually to avoid the possibility of water hammer.