Mailing List Archive Mailing List Archive
John, OK, I didn't consider a double failure,but there should be a solution to this. Correct me if I'm wrong as I have virtual zero experience with rebreathers (only arm chair experience). In this case, the counterlung and loop is going to over fill. This will tell you right away that gas is leaking into the loop. The question is is it O2 or diluent? If the electronics work then there would be no problem to figure this out. But if the electronics went down at the same time, then you would just simplely switch to open circuit and bailout. I'm sure there are other solutions as well. If you figured out that O2 was leaking then you should be able to shut off the O2 bottle and continue on closed circuit as bailout. Aloha Tony On Thu, 5 Sep 1996, John Todd wrote: > anthony,youre a smart man.figure this out.solenoid failes on a closed > circuit,pumps a bunch of pure o2 into the mix,what happens?at least in the > semi closed youre breathing a known gas mix before hand.now,back to closed > circuit,computer failes,whoops,we have no o2 readout.mechanical do we care? > - jt > > On Wed, 4 Sep 1996, Anthony Montgomery wrote: > > > On Wed, 4 Sep 1996, John Todd wrote: > > > > > rich,no one who takes one of those 4 day iantd/tdi/whatever agency > > > courses on "rebreather diving" will be trained right to deal with manually > > > controlling the functions of the rebreather that are normally controlled by > > > the computer.you of all people should realize that.on top of that,if the > > > computer cant be trusted then how can you expect to trust the electronic > > > output generated by the computer?at least with the mechanical rebreathers > > > (err, semi-closed) theres no fancy gadgetry or tomfoolery to mess with,and > > > as a result its safer. - jt > > > > > John, > > > > Do you really think semi-closed rebreathers are safer? It seems > > to me that diving on a unit which depends on expected workload and > > theoretical O2 consumption rate isn't safe. But actually I won't go as > > far to say that semi-closed systems are unsafe. I would consider these > > aspects of semi-closed systems a disadvantage just as I would consider > > the likelyhood of electronic failure a disadvantage for fully-closed > > systems. > > > > ANTHONY MONTGOMERY > > Marine Option Program Waikiki Aquarium > > 1000 Pope Road MSB #203 2777 Kalakaua Ave > > Honolulu, Hawaii 96822 Honolulu, Hawaii 96815 > > Fax: (808) 956-2417 Fax: (808) 923-1771 > > Phone: (808) 956-6000 Phone: (808) 923-9741 > > > > > > > > > > >
Navigate by Author:
[Previous]
[Next]
[Author Search Index]
Navigate by Subject:
[Previous]
[Next]
[Subject Search Index]
[Send Reply] [Send Message with New Topic]
[Search Selection] [Mailing List Home] [Home]