Based on my experience at least, electrostatic discharge in hydraulic systems is not a widespread problem. But for reasons I’ll explain in a moment, it may be on the increase. So it’s definitely something you need to be aware of.
As you probably remember from school science experiments, electrostatic charge is generated whenever there is friction between two bodies moving relative to each other. No real surprise then, that electrostatic charge generation occurs in hydraulic systems as a result of friction between the fluid and system components.
A common symptom of electrostatic discharge in a hydraulic system is an audible … continue reading »
My son Benjamin had glandular fever last year. He was quite sick and missed a month of school. At the height of the fever his temperature was 39C for 4 days straight. I know this because his very concerned mother was monitoring his temperature constantly. If you have children of your own you can imagine the relief on day 5 when his temperature finally started to go down.
When you think about it, it’s really handy that our body temperature is a quick and effective indicator of general health. These days you (or somebody else) can stick an electronic gizmo … continue reading »
A client recently asked me to investigate and solve a recurring problem on a diving bell launch and recovery system. The system comprised of a hydraulic power unit, a bell winch, an umbilical winch and a guide-wire winch.
To launch the bell, the guide-wire winch is used to lower a clump weight to the seabed (the guide wires prevent the bell from spinning during launch and recovery) and then the bell and its umbilical are launched using their respective winches.
After the divers have finished their shift on the seabed (usually 6-8 hours) the bell and its umbilical are recovered, … continue reading »