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>GUE dive 35% He bottom mix on standard dives in Manatee or Ginnie?
Copy mail from Jarrod Jablonski ;
Hey gang,
Following is a snip of the requested information.
13.3.1 Decompression Table Generation
All dive tables must include a table with the expected =
decompression, plus and minus at least 30% for depth and time. Divers =
should study these tables so they can evaluate the trend of the =
decompression should they need to extrapolate from it. Divers should =
also generate contingency tables to enable them to adjust their =
decompression schedule in the event of a lost or nonfunctional =
decompression bottle; they should be able to adjust their decompression =
with any combination of gasses. For example, a diver who loses their =
Oxygen bottle should be able to do the entire decompression on 50% =
Nitrox.
Experienced divers are able to extrapolate from a memorized table =
to any reasonable schedule they may encounter. Skilled divers learn to =
make minimal use of written decompression tables; instead they focus on =
understanding how the tables are generated and invest time in =
understanding the decompression curve and how it is reshaped by =
alterations in the plan (lost gas or increased time/depth).
13.3.2 Choosing the Right Gas Mixes: Standardized Mixtures
Many divers have been led to believe that great precision is =
necessary when calculating a "best mix" for a particular dive. In truth, =
such mixtures do not markedly improve a diver's efficiency, but rather =
can place them at greater risk as they near individual limitations. In =
content, standard mixes allow divers to become familiar with a handful =
of gasses that provide them with very similar efficiency. This =
familiarity coupled with a more liberal safety margin make the following =
mixtures a wise choice for nearly any diving operation.
TABLE 13.1 BOTTOM MIXES
10' 100' 3m - 30m 32% Oxygen=20
110' 150' 33m - 45m 21/35 (O2/He)=20
160' 200' 48m - 60m 18/45 (O2/He)=20
210' 250' 63m - 75m 15/55 (O2/He)=20
260' 400' 78m 121m 10/70 (O2/He)=20
TABLE 13.1 DECOMPRESSION MIXES
20' 6m 100% Oxygen=20
70' 21m 50% Oxygen=20
120' 36m 35/25 (O2/He)=20
190' 57m 21/35 (O2/He)=20
Good diving,
JJ
At 07:38 PM 5/21/2001, Kent Lind wrote:
Does GUE or WKPP actually have a standard list of bottom gas mixes? =
The
WKPP site has standard deco gasses listed but I have never seen =
standardized
bottom gases listed anywhere on a GUE or WKPP web site.
It would seem to me that the gear standardization that goes along with =
the
rest of the DIR philosophy should apply to gas mixes as well. =
Although I
guess bottom depth isn't necessarily the only determining factor when
choosing bottom mix because you have to consider tox as well.
I was just curious about whether GUE or WKPP have established =
standardized
bottom mixes or whether you generally custom-mix for a specific dive.
Kent Lind
Juneau, Alaska
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Jarrod Jablonski
President-=20
Global Underwater Explorers=20
CEO Halcyon Manufacturing/Extreme Exposure=20
GUE (www.gue.com) is a non-profit educational, research, and exploratory =
organization with hundreds of dedicated members around the world.=20
Halcyon manufacturing (www.halcyon.net) and Extreme Exposure =
(www.extreme-exposure.com) produce some of the scuba industry's most =
novel and robust diving equipment designed by many of diving's most =
active explorers.=20
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<DIV><FONT color=3D#000080 face=3D"Comic Sans MS" size=3D2>>GUE dive =
35% He bottom=20
mix on standard dives in Manatee or Ginnie?<BR></FONT></DIV>
<DIV><FONT color=3D#000080 face=3D"Comic Sans MS" size=3D2>Copy mail =
from Jarrod=20
Jablonski ;</DIV></FONT>
<DIV> </DIV>
<DIV><FONT color=3D#000080 face=3D"Comic Sans MS" size=3D2><B>Hey=20
gang,<BR><BR>Following is a snip of the requested =
information.<BR><BR>13.3.1=20
Decompression Table Generation<BR></B> All dive =
tables=20
must include a table with the expected decompression, plus and minus at =
least=20
30% for depth and time. Divers should study these tables so they can =
evaluate=20
the trend of the decompression should they need to extrapolate from it. =
Divers=20
should also generate contingency tables to enable them to adjust their=20
decompression schedule in the event of a lost or nonfunctional =
decompression=20
bottle; they should be able to adjust their decompression with any =
combination=20
of gasses. For example, a diver who loses their Oxygen bottle should be =
able to=20
do the entire decompression on 50% Nitrox.<BR> =20
Experienced divers are able to extrapolate from a memorized table to any =
reasonable schedule they may encounter. Skilled divers learn to make =
minimal use=20
of written decompression tables; instead they focus on understanding how =
the=20
tables are generated and invest time in understanding the decompression =
curve=20
and how it is reshaped by alterations in the plan (lost gas or increased =
time/depth).<BR><FONT face=3D"Times New Roman, Times"><B>13.3.2
Choosing =
the Right=20
Gas Mixes: Standardized
Mixtures<BR></B></FONT> =
Many=20
divers have been led to believe that great precision is necessary when=20
calculating a “best mix” for a particular dive. In truth, =
such mixtures do not=20
markedly improve a diver’s efficiency, but rather can place them =
at greater risk=20
as they near individual limitations. In content, standard mixes allow =
divers to=20
become familiar with a handful of gasses that provide them with very =
similar=20
efficiency. This familiarity coupled with a more liberal safety margin =
make the=20
following mixtures a wise choice for nearly any diving =
operation.<BR><BR><BR>
<DIV align=3Dcenter><FONT face=3D"Times New Roman, Times"><B>TABLE
13.1 =
BOTTOM=20
MIXES<BR></B></FONT>
<TABLE border=3D1>
<TBODY>
<TR>
<TD width=3D81><FONT face=3D"Arial, Helvetica">10’ =
100’</FONT>=20
<TD width=3D92>3m - 30m</TD>
<TD width=3D108>32% Oxygen</TD></TR>
<TR>
<TD width=3D81>110’ 150’=20
<TD width=3D92>33m - 45m</TD>
<TD width=3D108>21/35 (O2/He)</TD></TR>
<TR>
<TD width=3D81>160’ 200’=20
<TD width=3D92>48m - 60m</TD>
<TD width=3D108>18/45 (O2/He)</TD></TR>
<TR>
<TD width=3D81>210’ 250’=20
<TD width=3D92>63m - 75m </TD>
<TD width=3D108>15/55 (O2/He)</TD></TR>
<TR>
<TD width=3D81>260’ 400’=20
<TD width=3D92>78m 121m </TD>
<TD width=3D108>10/70
(O2/He)</TD></TR></FONT></TBODY></TABLE>
<DIV align=3Dcenter><FONT face=3D"Helvetica, =
Helvetica"><BR><BR></FONT><FONT=20
face=3D"Times New Roman, Times"><B>TABLE 13.1 DECOMPRESSION=20
MIXES<BR><BR></B></FONT>
<TABLE border=3D1>
<TBODY>
<TR>
<TD width=3D99><FONT face=3D"Arial, Helvetica">20’</FONT>=20
<TD width=3D81>6m</TD>
<TD width=3D115>100% Oxygen</TD></TR>
<TR>
<TD width=3D99>70’=20
<TD width=3D81>21m</TD>
<TD width=3D115>50% Oxygen</TD></TR>
<TR>
<TD width=3D99>120’=20
<TD width=3D81>36m</TD>
<TD width=3D115>35/25 (O2/He)</TD></TR>
<TR>
<TD width=3D99>190’=20
<TD width=3D81>57m</TD>
<TD width=3D115>21/35
(O2/He)</TD></TR></FONT></TBODY></TABLE><FONT=20
face=3D"Helvetica, Helvetica"><BR></FONT>Good =
diving,<BR>JJ<BR><BR><BR><BR>At=20
07:38 PM 5/21/2001, Kent Lind wrote:<BR>
<BLOCKQUOTE class=3Dcite type=3D"cite" cite>Does GUE or WKPP actually =
have a=20
standard list of bottom gas mixes? The<BR>WKPP site has standard =
deco=20
gasses listed but I have never seen standardized<BR>bottom gases =
listed=20
anywhere on a GUE or WKPP web site.<BR><BR>It would seem to me that =
the gear=20
standardization that goes along with the<BR>rest of the DIR philosophy =
should=20
apply to gas mixes as well. Although I<BR>guess bottom depth =
isn't=20
necessarily the only determining factor when<BR>choosing bottom mix =
because=20
you have to consider tox as well.<BR><BR>I was just curious about =
whether GUE=20
or WKPP have established standardized<BR>bottom mixes or whether you =
generally=20
custom-mix for a specific dive.<BR><BR>Kent Lind<BR>Juneau,=20
=
Alaska<BR><BR><BR><BR>----------------------------------------------
-----=
------------------<BR>To=20
unsubscribe, e-mail: quest-unsubscribe@gu*.co*<BR>For additional =
commands,=20
e-mail: quest-help@gu*.co*</BLOCKQUOTE><X-SIGSEP>
<P></X-SIGSEP>Jarrod Jablonski<BR><BR>President- <BR>Global
Underwater =
Explorers=20
<BR>CEO Halcyon Manufacturing/Extreme Exposure <BR><BR>GUE (<A=20
href=3D"http://www.gue.com/" eudora=3D"autourl">www</A>.gue.<A=20
href=3D"http://www.gue.com/" eudora=3D"autourl">com</A>) is a non-profit =
educational, research, and exploratory organization with hundreds of =
dedicated=20
members around the world. <BR>Halcyon manufacturing (<A=20
href=3D"http://www.halcyon.net/" eudora=3D"autourl">www</A><A=20
href=3D"http://www.halcyon.net/" eudora=3D"autourl">.halcyon.net</A>) =
and Extreme=20
Exposure (<A href=3D"http://www.extreme-exposure.com/"=20
eudora=3D"autourl">www</A>.extreme-exposure.<A=20
href=3D"http://www.extreme-exposure.com/" eudora=3D"autourl">com</A>) =
produce some=20
of the scuba industry's most novel and robust diving equipment designed =
by many=20
of diving's most active explorers.=20
<BR><BR><BR></P></DIV></DIV></FONT></DIV></BODY></
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