Re: [PSUBS-MAILIST] ASME PVHO

["Sean T. Stevenson" <cast55@telus.net>]

I don't think that we can post ASME PVHO-1-2007 on the website, as it is a copyrighted document still in print, and sold by the ASME.  (In contrast to the ABS Rules, which are a free download).

Link to ASME PVHO standards

Unfortunately, the standard under consideration costs $190.00 USD, regardless of whether you order a print version or the downloadable PDF.


-Sean


On 02/11/2010 10:51 PM, Brian Cox wrote:

Is the ASME PVHO available on the psubs web site?

 

Brian

-----Original Message-----
From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org]On Behalf Of Sean T. Stevenson
Sent: Tuesday, November 02, 2010 7:29 PM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] ASME PVHO

I sent an email off to the ASME staff contact for PVHO, just to confirm that this is not a typo.  Stay tuned...

-Sean


On 31/10/2010 8:06 PM, Hugh Fulton wrote:

Hi Sean,

I am having problems with doing Q.A. on my shell for out of roundness.  This is an area which is fairly important to measure.

I have applied the 1% rule as a general tolerance but trying to comply and understand the PVHO caclcs.

ASME PVHO-1-2007 has a section:-

1-7.13.3 (e) (2)  Formula for c

c= 2.28(R/t)^0.54  cannot get under the required 2.8 with any normal measurements of a vessel .

Do you have any experience with this. 

My diameter is 48” and the shell thickness 5/16”  L is 15.75” 

Have you done any calcs on this area. 

Do/t for my purpose is 162 which falls within normal dimensions and under UG80.1 gives sensible answers.

Regards,

Hugh