A couple years ago I was teaching some tech courses and the students were learning the motions of a valve drill but they were not understanding why or when the drill is over based on which side is having a problem. I realized that by just doing the motions and not actually experiencing a failure behind their head they were fully understanding the purpose. So I came up with this little trick and have been using it for the last couple years and wanted to share it in case it might be of any help to anyone else:
This can be done above or below water. I really like doing it above water so they learn what a valve drill really accomplishes.
[video]https://www.facebook.com/video.php?v=10155015903905436&l=143947966635913561[/video]
It has really sped up the understanding process for my students over the last couple of years.
This can be done above or below water. I really like doing it above water so they learn what a valve drill really accomplishes.
- I connect a low pressure inflator hose to each regulator.
- I connect an inflator mechanism that is not attached to a corrugated hose to each inflator hose and run those behind the diver.
- I can then hold down the inflator button making a plethera of bubbles behind the divers head (Simulating what a real failure would be like)
- I hold the button down until they make the bubbles stop. This allows me to simulate a failure on each side which will change how many steps of the valve drill you actually do and show them when and how you know to stop etc. They do not know what side is having the problem until they fix it.
[video]https://www.facebook.com/video.php?v=10155015903905436&l=143947966635913561[/video]
It has really sped up the understanding process for my students over the last couple of years.