Just to prove I do some work occasionally

..... And also to test the blogger apps facility to post images, which is something I have not bern able to do for a long time.

My screen shot is of a computer model of a water pipe from a reservoir to a treatment works.  Its 12km long, so when someone shuts a valve the water has so much momentum it doesn't want to stop and the resultinguyen pressures burst the pipe.  We are sticking in some break tanks, and looking at a solution to lower the pressure still further in the valley by adding a boater pump with a bypass.

Its all good fun!