RE: Design checklist?

i dont quite agree (i mean not wholly). the posting raised by the gentlemen is limited to the checklist related to piping design o nly. we're not talking here of designing the process or the viability of the project because if that is the case then .the very first thing is estbalishing the dcf or roi or conducting a lcc analysis.

ny assumption is that the scope of work (sow) has been defined and flow sheet develop - normally this is job rest squarelywith the process engineer. if we limit our discussion to capital project or modification then the economics has also been prepered and that the dcf iis found acceptable.

lets go back to 300(b)(1) of b31.3 where the responsibilites of the designer is define and 300(b)(c) where the code intent was stated. - establishing the sow of the whole thing was never part of the designer repsobisilites and never been the i ntent of the Code.

  the process guys may have estbalished the flow, the pressure and the temp but i doubt whtewther that has been verfied as complying with chapter II of b31.3. estbalishing the design condition under 301 is clealry the reposobilitu of the piping desingner.. note that this is also the very first section of chapeter II hence the 1st step.

if we are talking about the big big picture - piping, instrumentation, equipment, duration, project comparison, lcc, etc then i agree with christopher.
> ----------
> From: Christopher Wright[SMTP:chrisw@skypoint.com]
> Reply To: <a href="/group/PipingDesign/post?postID=dVrmzTNcE_2vWYFItuZAbMmscuVDi9UlKT4g6MD3HpFg6FFOzHW5piHvbaYt09huoZdyyXhHPuZgkps0KnTOM9drQzCpfUA">PipingDesign@yahoogroups.com</a>
> Sent: 12 June, 2001 5:21 PM
> To: ?
> Subject: RE: [PipingDesign] Design checklist?
>
> >i may add that the very 1st step in the design is establishing the design
> >conditions for the pressure/temperature together with the different
> loading
> >conditions (siesmic, wind, etc.). this is the easy part
> Actually that's the second or third step. The first step is finding out
> what the customer expects you to provide. For example--if the customer
> has done the process design, he may have already figured out the
> temperatures and pressures in the system.
>
> The next step is the architecture--where does a run of pipe start, where
> does it end and where the hardware in between is supposed to go. Unless
> of course your customer has provided that information, too.
>
> Every engineering job starts by figuring out what you're going to be
> providing to your customer. That's the only way to know when the job is
> finished.
>
> Christopher Wright P.E. |"They couldn't hit an elephant from
> chrisw@skypoint.com | this distance" (last words of Gen.
> ___________________________| John Sedgwick, Spotsylvania 1864)
> <a href="http://www.skypoint.com/~chrisw">http://www.skypoint.com/~chrisw</a>
>
>
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Received on Wed Jun 13 01:08:00 2001