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This is a multi-part message in MIME format. ------=_NextPart_000_0075_01BEFC9C.BA90C4A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable With all the discussion regarding tank marking... I've got a question about the practice of using 100% oxygen just before = exiting (something which I have not started to do yet). I dive Nitrox = regularly, and mark my tanks using the calculated mod, not the = contingency depth.=20 >From what I've read, I see that WKPP divers mark the sides of their 100% = O2 bottles with the number 20, signifying that one should not be below = twenty feet when breathing the contents of the bottle. It seems that the = 100% O2 bottle marking is an exception to using the MOD, since at 19.8 = feet the PP02 is 1.6 ata., which would be the contingency depth. If one = were not using a full face mask when breathing off this tank, I would = guess common sense would tell me that I should wait until I'm at the MOD = before I take a breath.=20 Is this correct, or did I miss something? Scott Gudmundsen Vernal, Utah ------=_NextPart_000_0075_01BEFC9C.BA90C4A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content=3D"text/html; charset=3Diso-8859-1" = http-equiv=3DContent-Type> <META content=3D"MSHTML 5.00.2314.1000" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial>With all the discussion regarding tank=20 marking...</FONT></DIV> <DIV><FONT face=3DArial></FONT> </DIV> <DIV><FONT face=3DArial>I've got a question about the practice of using = 100%=20 oxygen just before exiting (something which I have not started to do = yet). I=20 dive Nitrox regularly, and mark my tanks using the calculated mod, not = the=20 contingency depth. </FONT></DIV> <DIV><FONT face=3DArial></FONT> </DIV> <DIV><FONT face=3DArial>From what I've read, I see that WKPP divers mark = the sides=20 of their 100% O2 bottles with the number 20, signifying that one should = not be=20 below twenty feet when breathing the contents of the bottle. It seems = that the=20 100% O2 bottle marking is an exception to using the MOD, since at 19.8 = feet the=20 PP02 is 1.6 ata., which would be the contingency depth. If one were not = using a=20 full face mask when breathing off this tank, I would guess common sense = would=20 tell me that I should wait until I'm at the MOD before I take a breath.=20 </FONT><FONT face=3DArial></FONT></DIV> <DIV><FONT face=3DArial></FONT> </DIV> <DIV><FONT face=3DArial>Is this correct, or did I miss = something?</FONT></DIV> <DIV><FONT face=3DArial></FONT> </DIV> <DIV><FONT face=3DArial>Scott Gudmundsen</FONT></DIV> <DIV><FONT face=3DArial>Vernal, Utah</FONT></DIV> <DIV> </DIV> <DIV> </DIV></BODY></HTML> ------=_NextPart_000_0075_01BEFC9C.BA90C4A0-- -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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