Rebreather World - View Single Post - Passed Negative-test and still flooded...

bourskov · 21st July 2007, 20:45

Hi...

I vent for a dive yesterday, after doing a service of my OPV in the counterlungs... I did all the predive checks as discribed, and it passed...

Under the dive I heard this gurgeling sound when I exhale. So I thourgth, maybe it's just a tiny amount of water, like if I didn't empty the mouthpiece correct. During the dive (~40 min @ 12-13 meters) I didn't have any problems...

But when I got home and took the unit apart, it became clear that there wasa problem... It was flooded... Half of the scrubber was soaked, so there were some cleaning to do...

After cleaning and reasembling I preformed a negative test, and like before the dive, no problems... But as I tried to do a kind of positive test, it turned
that there was a problem with the OPV. I didn't resist very much pressure, and therefore (I was told by another Boris-diver) the water can enter the lung during a dive...

So the big question is... Does you Boris-divers outthere do a kind of positive test on your units?!

I am well aware, that you can't do a real positive test, without blocking out the OPV....

Cheers
Bo Urskov

21st July 2007, 20:45	#1 (permalink)
bourskov New Member Current Rebreather/s: Ouroboros Other Rebreather/s: Inspiration Classic Join Date: Nov 2006 Location: Denmark Posts: 92	Passed Negative-test and still flooded... Hi... I vent for a dive yesterday, after doing a service of my OPV in the counterlungs... I did all the predive checks as discribed, and it passed... Under the dive I heard this gurgeling sound when I exhale. So I thourgth, maybe it's just a tiny amount of water, like if I didn't empty the mouthpiece correct. During the dive (~40 min @ 12-13 meters) I didn't have any problems... But when I got home and took the unit apart, it became clear that there wasa problem... It was flooded... Half of the scrubber was soaked, so there were some cleaning to do... After cleaning and reasembling I preformed a negative test, and like before the dive, no problems... But as I tried to do a kind of positive test, it turned that there was a problem with the OPV. I didn't resist very much pressure, and therefore (I was told by another Boris-diver) the water can enter the lung during a dive... So the big question is... Does you Boris-divers outthere do a kind of positive test on your units?! I am well aware, that you can't do a real positive test, without blocking out the OPV.... Cheers Bo Urskov
(Offline)