<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><span>Brian,</span></div><div id="yui_3_16_0_1_1453501337374_2747"><span id="yui_3_16_0_1_1453501337374_2752">No drop weight?</span></div><div id="yui_3_16_0_1_1453501337374_2747"><span>Hank</span></div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"><font size="2" face="Arial"> On Friday, January 22, 2016 2:23 PM, Brian Cox via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br></font></div> <br><br> <div class="y_msg_container"><div id="yiv5541671403"><div><div style="font-family:Arial, sans-serif;font-size:10pt;"><div>Alan, The air would most likely vent thru the hatch and then I'd be at whatever pressure the ambient water pressure would be . If there was no air to surface I guess I'd have to bail. I will have an additional tank outside the hull for filling the ballast however. That will be for raising and lowering the sub with scuba while out side the sub. I was thinking it would be kind of neat to set it on the bottom in about 30' water. That way I wouldn't have to anchor it !</div><div> </div><div>Brian<br clear="none"><br clear="none">--- personal_submersibles@psubs.org wrote:<br clear="none"><br clear="none">From: Alan James via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none">To: Personal Submersibles General Discussion <personal_submersibles@psubs.org><br clear="none">Subject: Re: [PSUBS-MAILIST] Hp valves<br clear="none">Date: Fri, 22 Jan 2016 17:51:26 +0000 (UTC)<br clear="none"><br clear="none"></div><div class="yiv5541671403yqt7785902888" id="yiv5541671403yqt93858"><div style="color:rgb(0, 0, 0);font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;background-color:rgb(255, 255, 255);"><div><span>Hi Brian,</span></div><div><span>I questioned G.L. on a number of items in thier rules for submarines</span></div><div dir="ltr"><span>& there are some grey areas that you would have to argue the point over</span></div><div dir="ltr"><span>with an inspector.</span></div><div dir="ltr"><span>One general rule is that no one failure can cause a major event.</span></div><div dir="ltr"><span>If the pipe failed at that elbow & you couldn't stop the flow of HP air,</span></div><div dir="ltr"><span>what sort of pressure could you be left with in the hull?</span></div><div dir="ltr"><span>Would you be able to blow the ballast tanks if you lost your air</span></div><div dir="ltr"><span>from that failure or do you have a redundant air supply?</span></div><div dir="ltr"><span>Cheers Alan</span></div><div dir="ltr"><span><br clear="none"></span></div><div dir="ltr"><span><br clear="none"></span></div><br clear="none"> <div><br clear="none"><br clear="none"></div><div style="display:block;"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div dir="ltr"> <font face="Arial" size="2"> </font><hr size="1"> <b><span style="font-weight:bold;">From:</span></b> Brian Cox via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none"> <b><span style="font-weight:bold;">To:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br clear="none"> <b><span style="font-weight:bold;">Sent:</span></b> Saturday, January 23, 2016 6:34 AM<br clear="none"> <b><span style="font-weight:bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Hp valves<br clear="none"> </div> <div><br clear="none"><div><div><div style="font-family:Arial, sans-serif;font-size:10pt;"><div>ABS says " as close as possible" I guess I'm ok with a short nipple coming off a elbow.</div><div> </div><div>Brian<br clear="none"><br clear="none">--- personal_submersibles@psubs.org wrote:<br clear="none"><br clear="none">From: Brian Cox via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none">To: "PSubs " <personal_submersibles@psubs.org><br clear="none">Subject: [PSUBS-MAILIST] Hp valves<br clear="none">Date: Wed, 20 Jan 2016 08:34:43 -0800<br clear="none"><br clear="none"></div><div><div style="font-family:Arial, sans-serif;font-size:10pt;"><div>Is there any distinction as to how close a HP shut off valve or check valve has to be to the hull penetration so as to meet ABS requirements? Can there be a short nipple between an elbow and the valve for instance?</div><div> </div><div>Brian Cox</div></div></div>
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