Mailing List Archive Mailing List Archive
Reply to: RE>Stops and EAN Barrie Kovish wrote: >When decompressing using EAN and air tables one could in theory >follow >1 of 2 procedures to decrease the probability of DCI. These are > 1. Stop at the air table depth but improve off gasing efficiency by > breathing EAN. > 2. Stop at the the depth where the EAD is equal to the air table > depth and reduce the probability of bubble formation or growth. >I would guess that supersaturation models uniformly recommend >procedure 1 while >nonsupersaturation models would recommend procedure 2. Is there >any hard data >to support either approach? Barrie, I am not worried about what some model *prefers*, as they are only models. Of the two choices that you listed, I almost always use option two. I use EAN 50 at 36 ft to give me an EAD of 10 Ft. yet keep bubble formation as low as possible. I also do not use an accelerated schedule but prefer to use the air schedule when using EAN 50. I look at option 1 as if everything is O.K. (not my day to be bent) then bubble formation will probably not be a problem. If on the other hand it is my day to be bent (tired, dehydrated, whatever), then option one would probably produce bubbles that EAN 50 (or O2) will have difficulty with (as the nitrogen comes out of solution) :-(, that option 2 would handle better IMHO. Steve Hogan Steve_Hogan@qm*.sp*.tr*.co* Barrie Kovish Vancouver, Canada bmk@ds*.bc*.ca* -- Send mail for the `techdiver' mailing list to `techdiver@opal.com'. Send subscription/archive requests to `techdiver-request@opal.com'. ------------------ RFC822 Header Follows ------------------ Received: by qmail4.sp.trw.com with SMTP;25 Nov 1994 09:46:06 U Received: from localhost (daemon@lo*) by fulton.opal.com (8.6.4/jr2.9) id LAA06094; Fri, 25 Nov 1994 11:38:35 -0500 Precedence: bulk Errors-To: owner-techdiver@opal.com From: <bmk@ds*.bc*.ca*> Received: from dsi.bc.ca (stealth.dsi.bc.ca [134.87.167.252]) by fulton.opal.com (8.6.4/jr2.9) with SMTP id LAA06073; Fri, 25 Nov 1994 11:38:26 -0500 Received: by dsi.bc.ca (5.65/DEC-Ultrix/4.3-DSIa) id AA16390; Fri, 25 Nov 1994 08:01:05 -0800 Date: Fri, 25 Nov 1994 08:01:05 -0800 Message-Id: <9411251601.AA16390@ds*.bc*.ca*> X-Sender: bmk@st*.ds*.bc*.ca* Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: techdiver@opal.com Subject: Stops and EAN X-Mailer: <PC Eudora Version 1.4>
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]