<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px"><div id="yui_3_16_0_ym19_1_1479386901162_7922">Hi all,</div><div id="yui_3_16_0_ym19_1_1479386901162_7922" dir="ltr">I am just getting a pressure test organized in a chamber in Burnaby, but I have some questions. Does the safety margin change with deeper diving subs? </div><div id="yui_3_16_0_ym19_1_1479386901162_7922" dir="ltr">What is the rate of pressurization?</div><div id="yui_3_16_0_ym19_1_1479386901162_7922" dir="ltr">Hank</div></div></body></html>