<div dir="ltr">Thanks for the advice all.<div>Im thinking about what to do. I might have a practice on some scrap to see how much i can penetrate.</div><div>Many thanks</div><div>James</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, 3 Jun 2023 at 00:29, Jon Wallace via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div style="font-family:"times new roman","new york",times,serif;font-size:16px"><div></div>
<div dir="ltr">For what its worth, Kittredge shows fillet welds on all small penetrators up to 2-inch diameter in the K350 plans.</div><div dir="ltr"><br></div><div dir="ltr">Jon</div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr"><br></div>
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On Friday, June 2, 2023 at 07:39:27 AM EDT, James Frankland via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:
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<div><div id="m_7278491830853647963ydpa4ec4087yiv6669555673"><div><div dir="ltr">Hi Jon<div>Ive scoured ABS and i cant see anything specific about it. Im sure its there somewhere, i just cant find it.</div><div><br clear="none"></div><div>Ive just re-read my email and it might have been confusing. I do mean small penetrators, not large penetrations such as viewports. Obviously they must be 100% pen.</div><div><br clear="none"></div><div>Anyone else got any ideas?<br clear="none">Thanks</div><div><br clear="none"></div><div><br clear="none"></div></div><br clear="none"><div><div id="m_7278491830853647963ydpa4ec4087yiv6669555673yqt68512"><div dir="ltr">On Fri, 2 Jun 2023 at 02:41, Jon Wallace via Personal_Submersibles <<a shape="rect" href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank">personal_submersibles@psubs.org</a>> wrote:<br clear="none"></div><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div style="font-family:"new times",serif;font-size:16px"><div></div>
<div dir="ltr">Reviewing ABS or ASME steel vessel rules may shed some light on the issue. My understanding is that anything two inches or less requires only fillet welds. The rule may actually be a ratio to the hull diameter rather than a specific number, however I do believe your 30mm penetrator is perfectly safe with fillet welds.</div><div dir="ltr"><br clear="none"></div><div dir="ltr">Jon</div><div dir="ltr"><br clear="none"></div><div dir="ltr"><br clear="none"></div><div><br clear="none"></div>
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On Thursday, June 1, 2023 at 09:39:45 AM EDT, James Frankland via Personal_Submersibles <<a shape="rect" href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank">personal_submersibles@psubs.org</a>> wrote:
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<div><div id="m_7278491830853647963ydpa4ec4087yiv6669555673m_-9015690594049241604m_1963857151617410026ydp64116954yiv6061614044"><div dir="ltr">Hi All<div><br clear="none"></div><div>Any thoughts on this. I have always thought that welds for through hull fittings are not required to be full penetration. Just keep the hole as tight as possible to the fitting.</div><div><br clear="none"></div><div>Ive been talking to some people who say that the joints should be full pen.</div><div><br clear="none"></div><div>Obviously full pen is best, but has issues with accessibility and warping.</div><div><br clear="none"></div><div>On Jodie B i just welded all the penetrators in with a double fillet as i believe was shown in the plans.</div><div><br clear="none"></div><div>Gamma plans show a "mostly" full pen weld for one of their penetrators. See pic.</div><div><br clear="none"></div><div>I am thinking of putting a 30mm diameter penetrator through the 25mm conning tower base. This is a bit of a monster to get full pen.</div><div><br clear="none"></div><div>What do you guys think? Anyone put a penetrator through such thick material before?</div><div><br clear="none"></div><div>Any views on penetration of small welded fittings?</div><div><br clear="none"></div><div><br clear="none"></div></div>
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