[PSUBS-MAILIST] Weld seam location

[Antoine Delafargue via Personal_Submersibles]

Hello
Mine is on 20degrees off bottom, far from any through hull. Or lifting
eyes.
And not bathing in bilge water.
Looking at pressure vessels rules like uk /eu 13445 you can either put
through hulls right through butt welds or far enough.

Regards
Antoine

Le jeu. 2 mars 2023 à 02:08, Rick Patton via Personal_Submersibles <
personal_submersibles at psubs.org> a écrit :

> Mine's on top James.
>
> On Wed, Mar 1, 2023 at 11:07 AM James Frankland via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> Thanks both.  Thats what I have told them.
>> Regards
>> James
>>
>>
>> On Wed, 1 Mar 2023 at 17:48, Sean T. Stevenson via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>>> This is true if you have a single seam weld. If you are butt welding
>>> multiple sections together, you want to stagger the longitudinal welds
>>> rotationally at an angle which is not a factor of the number of lobes at
>>> theoretical overall instability failure.
>>>
>>> Sean
>>>
>>>
>>>
>>> -------- Original Message --------
>>> On Mar. 1, 2023, 10:25, Alec Smyth via Personal_Submersibles <
>>> personal_submersibles at psubs.org> wrote:
>>>
>>>
>>> It goes on top, assuming you have a CT on top, because that minimizes
>>> the length of the welded seam.
>>>
>>> Best,
>>> Alec
>>>
>>> On Wed, Mar 1, 2023 at 12:20 PM James Frankland via
>>> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>>>
>>>> Hi All
>>>>
>>>> Im not sure if this matters much, but my fabricator has asked whether
>>>> to put the main seam for the weld on either the top, or bottom of the main
>>>> tube.
>>>>
>>>> Obviously this is for when they orientate it for the tower nozzle.
>>>>
>>>> On Jodie B i put it at the top.
>>>>
>>>> Skadoc's is at the bottom.
>>>>
>>>> What do people think?
>>>>
>>>> Thanks
>>>> James
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