[PSUBS-MAILIST] PVHO rules

[Sean T. Stevenson via Personal_Submersibles]

Hank - are you referring to the ASME Safety Standard for Pressure Vessels for Human Occupancy (PVHO-1), or something else?  PVHO-1 exhaustively details required window geometries, but the fabrication section is relatively short.  It does, however, outline the required annealing schedules.  I was going to sit down today and try to answer your earlier email about your intended window.  Between PVHO-1 and Jerry Stachiw's Handbook of Acrylics, all the info you need is in there.

The PVHO standards are available directly from ASME:

https://www.asme.org/products/codes-standards/pvho1-2016-safety-standard-pressure-vessels-human

Stachiw's book I imagine is available from a variety of distributors.

Sean

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Sunday, April 21, 2019 8:11 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

> Hi All,
> I am looking for the actual PVHO rules for Acrylic forming.  I can find all the references to the rules but not the rules.  I am planning to make a 5 inch thick 60 degree Hemispherical segment either from forming  or from machining out of a thick slab.  I prefer to form it because I will need an oven to heat treat it after anyways, but I don't want to form it without the rules.
> Hank
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