There are big difference eventhough within the B31s either for design or
inspection. The bigger would have among B31s and BPVC.
BTW, I found yesterday CSA B51-97 Standard would help a lot to classify where to go, BPV or PP? The dominant factors may be both volume and diameter of the component. For example, in the case of liquid service with liquid not more hazardous than water , less than 1.5 cu ft will go PP directly, and more than 1.5 cu ft but dia less than 6 inch would go PP too.
Best Regards,
Samuel Liu
-----Original Message-----
From: SARE, RALPH H. [mailto:SARERH@YANPET.SABIC.com]
Sent: Tuesday, August 07, 2001 10:22 PM
To: 'Samuel Liu'
Subject: RE: [PipingDesign] Govern Code for Manifold Nozzle Design?
the figure stated has almost work with us in resolving Code jurisidction between the engineers and the authorized inspector. Boilers internal piping are normally designed using BPV and external piping to B31.1. Most of the P&ID i have seen will show the boundary limits between the users piping and the boiler/heater package and will clealry indicate the spec change. The argument normally centered o n what type of testing and inspection has to be performed and for details its the allowable load and material permitted. Design equation for manifold such as nozzle details will not make much of a difference whether you use the BVP or the B31. Your purchase specification should also be looked i nto.
-----Original Message-----
From: Samuel Liu [mailto:samuel.liu@amec.com]
Sent: 07 August, 2001 7:19 PM
To: SARE, RALPH H.
Cc: 'PipingDesign@yahoogroups.com'
Subject: RE: [PipingDesign] Govern Code for Manifold Nozzle Design?
Per B31.1, FIG. 100.1.2(B), it is not a BEP, so would require to conform to
B31.3 if it is a piping.
Per B31.3, FIG. 300.1.1, it should be in the scope of a Piping Outside the
Scope (of B31.3).
So, will the BPVC govern the design? I am not sure, and it looks like not a
convincing argument there.
Best Regards,
Samuel Liu
-----Original Message-----
From: SARE, RALPH H. [ mailto:<a href="/group/PipingDesign/post?postID=OJtAxaBtwbFueTJ6FoErpyWHlqPwuEWpCtjbsgYB41kHoKsYmCfDkzvVVVgbeZV1JUPHfxFij15U0iZILY_P4_4">SARERH@YANPET.SABIC.com</a>
<mailto:SARERH@YANPET.SABIC.com> ]
Sent: Saturday, August 04, 2001 12:57 AM
To: 'PipingDesign@yahoogroups.com'
Subject: RE: [PipingDesign] Govern Code for Manifold Nozzle Design?
somebody borrowed copy of b31.1 so permit me to use b31.3. Look up Section
300.1.3 Exclusions item (b) and (c) and Fig 300.1.1 diagram illustrating scope of B31.3. To qoute (b) "... boiler external piping to conform to B31.1." The illustration makes a much more convincing argument.
> ----------
> From: Samuel Liu[SMTP:samuel.liu@amec.com]
> Reply To: <a href="/group/PipingDesign/post?postID=pTA0_Vdg5JE-OnEsusfoHrOV-4BQmdP0QM8EoRhtztfuFXglJ8VSoalLYIMCGWrfeyWLn_g1GPSKO-0u3zG2cSVf">PipingDesign@yahoogroups.com</a>
> Sent: 02 August, 2001 7:40 PM
> To: 'PipingDesign@yahoogroups.com'
> Subject: [PipingDesign] Govern Code for Manifold Nozzle Design?
>
> This nozzle is to be installed at the top of HP Heater's Flash Box in a
> power plant, and its design conditions are 15PSI/100DegF. There are many
> nozzles for various drains attached to the manifold shell(24" OD tube) and
> end cover.
>
> B31.1 or BPVC?
> Best Regards,
>
> Samuel Liu
> Mechanical Engineer
> AMEC E&C Services Limited
> PH: 1-780-968-3421
> FAX: 1-780-968-3423
> Email: <a href="/group/PipingDesign/post?postID=9VuunMfubsDUg-fuV4tntqiHGJ5zLtBbb-IX3AMDWw5fwOB7-UpgN3D_fjKpiUK100lRWMmE8Ge-j6y33Q">samuel.liu@amec.com</a>
>
> Visit our web site at www.amec.com
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
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[Non-text portions of this message have been removed] Received on Wed Aug 08 12:21:00 2001
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