Latenight
Registered
Hi,
Group of us (6 recreational divers) did PSS Decompression procedures and PSS Accelerated decompression course this July. Two of us are sidemount divers that are feeling comfortable diving in SM configuration (50+ dives prior to tech course). Others are intermediate recreational divers that used tech configuration for the first time during course, so that fact made it more difficult for them.
We were doing our planned course dive which was 20 min. @ 40 meters with planned decompression using EAN 50 that we would switch to @ 21 meters.
When doing switch to EAN 50, one of the guys signaled that he has problems and is not ok. He went in a mild state of panic, but instructor managed to calm him down. Finally he made switch to EAN 50, did his decompression and finished the dive successfully.
At the debriefing he informed us that he felt convulsions when he switched to EAN 50 and couldn't breathe normally. We all assigned that to mild panic because he is a diver who is somehow pushing himself too hard and his skill level is not following.
Next day our planned dive was 20 minutes @ 50 meters using air in our doubles, and again EAN 50 for decompression.
When switching to EAN 50, he again signaled that he has problems, but now he wasn't panicking, just clearly signaling problem. Again, instructor managed to fix things and he finished his dive. At the debriefing, he basically told us story from day before. This time instructor stated that probable cause is bad stage regulator which could give him harder WOB. He gave him other regulator to try on next planned dive, which was shallow dive (15 m max) aimed only at practicing skills.
On that shallow dive, he managed to switch his regulator without any issue and everything was fine, but i am not satisfied with that solution because he was already practicing switching to stage regulator prior to first dive and using "bad" regulator and also everything went fine.
Anybody with similar experience? What could be other causes?
Group of us (6 recreational divers) did PSS Decompression procedures and PSS Accelerated decompression course this July. Two of us are sidemount divers that are feeling comfortable diving in SM configuration (50+ dives prior to tech course). Others are intermediate recreational divers that used tech configuration for the first time during course, so that fact made it more difficult for them.
We were doing our planned course dive which was 20 min. @ 40 meters with planned decompression using EAN 50 that we would switch to @ 21 meters.
When doing switch to EAN 50, one of the guys signaled that he has problems and is not ok. He went in a mild state of panic, but instructor managed to calm him down. Finally he made switch to EAN 50, did his decompression and finished the dive successfully.
At the debriefing he informed us that he felt convulsions when he switched to EAN 50 and couldn't breathe normally. We all assigned that to mild panic because he is a diver who is somehow pushing himself too hard and his skill level is not following.
Next day our planned dive was 20 minutes @ 50 meters using air in our doubles, and again EAN 50 for decompression.
When switching to EAN 50, he again signaled that he has problems, but now he wasn't panicking, just clearly signaling problem. Again, instructor managed to fix things and he finished his dive. At the debriefing, he basically told us story from day before. This time instructor stated that probable cause is bad stage regulator which could give him harder WOB. He gave him other regulator to try on next planned dive, which was shallow dive (15 m max) aimed only at practicing skills.
On that shallow dive, he managed to switch his regulator without any issue and everything was fine, but i am not satisfied with that solution because he was already practicing switching to stage regulator prior to first dive and using "bad" regulator and also everything went fine.
Anybody with similar experience? What could be other causes?
