On Jul 25, 2007, at 3:40 PM, Alok Dubey wrote:
> My question intent was to understand the logic behind initial
> statement posted quoting Desgin pressure =1.5 * Operating Pressure.
Here's two guesses emphasizing the need for caution in throwing terms
around
1. The original poster cited some sort of company standard. Could be
that the MAWP is
supposed to be 1.5xthe expected normal service pressure to give some wiggle
room for thermal stress and abnormal service conditions 2. Someone got confused over the terminology and assumed that the test pressure is a design condition because it's the largest pressure the vessel ever sees short of an accident.
The third possibility is that no one knew what they were talking about.
Christopher Wright P.E. |"They couldn't hit an elephant at chrisw@skypoint.com | this distance" (last words of Gen.
.......................................| John Sedgwick, Spotsylvania1864)
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