ASME VIII

Forwarded by request

Begin forwarded message:

> From: "Michael Thornbery" <m.thornbery@pmlucas.com>
> Date: August 10, 2007 11:37:52 AM CDT
>

> Following on from the recent discussion about availability of codes
> and
> standards, can somebody save me $Lots with some advice, please?
>
> My 2001 version of ASME VIII - Div 1 states in UG-99, that vessel
> hydrotest
> pressure is to be "at least equal to 1.3 times the maximum
> allowable working
> pressure". However, my 2004, copy of McGraw Hill's 8th edition of
> "Pressure
> Vessel : ASME Code Simplified", on page 126 indicates that the
> hydrotest
> pressure should be 1.5 times the MAWP.
>
> Has the ASME Code been updated since 2001, to raise the hydrotest
> pressure,
> or is this a mistake in the "Pressure Vessel : ASME Code
> Simplified"? The
> difference is obviously significant, with potentially major cost
> impacts if
> previously "in-spec" vessels are now out of spec!
>
> Many thanks for any guidance that you can provide regarding current
> ASME
> VIII requirements.
>
>
>
> Mike Thornbery
> CE, MIChemE
>
> PM Lucas Enterprises Ltd.,
> Kralice Marije 1/XVI
> Belgrade 11000
> Serbia
>
> Tel: +381 (0)11 33 76 666 ext. 107 (Office)
> +381 (0)6222 7009 (Mobile)
> Fax: +381 (0)11 33 76 826
>

Christopher Wright P.E. |"They couldn't hit an elephant at chrisw@skypoint.com | this distance" (last words of Gen.

.......................................| John Sedgwick, Spotsylvania