[PSUBS-MAILIST] ABS Question

[James Frankland via Personal_Submersibles]

thanks all, I think I am going in the right direction.
regards
James

On 20 June 2018 at 16:01, Sean T. Stevenson via Personal_Submersibles
<personal_submersibles at psubs.org> wrote:
> Mechanical strength will be governed by the pressure boundary component
> design rules, and I would suggest considering the components separately so
> that, for example, the body tube doesn't rely on the presence of the end cap
> for stiffening. Whatever your end flange is, it should meet the moment of
> inertia requirements for a heavy stiffener under the ABS Rules. This takes
> care of hoop stress and tripping concerns, and then you need only design for
> the shear and bending loads. Hatch land geometry is up to you, but the
> material surrounding the hole (if not a complete head in of itself) needs to
> be reinforced, and as per the discussion in the ABS Rules, the reinforcement
> must be integral / CJP joined to the hull shell and not welded as a doubler
> plate / shell. Additional details can be found in Section 8 of the ASME
> Boiler and Pressure Vessel Code, and in the ABS Steel Vessel Rules, which is
> also a free download. Your flanges / hatch lands should be sufficiently
> strong in both shear and bending, but you'll have to do the calculations for
> your design. Conical hatches can mirror the geometries of conical viewport
> rings per PVHO-1 and Jerry Stachiw's book.
>
> Sean
>
>
> -------- Original Message --------
>
> On Jun 20, 2018, 07:49, James Frankland via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>
> Hi All
>
> Does anyone know if there is a section in ABS covering battery pod
> endcap flange design? Or hatch land design\reinforcement which is
> kind of the same thing. I cant see it.
>
> I am finalising my design for the battery pod caps and don't want to
> over spec like I did on Jodie-B, but obviously need the flange design
> to be correct.
>
> Thanks
> James
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