Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Nozzle loads convention 1

Status
Not open for further replies.

ElCidCampeador

Mechanical
May 14, 2015
269
Is there an unique orientation convention for representing the direction of loads on nozzle in pressure vessels?
In my career I've been bumping in many drawings with different representation of nozzle loads chart (Arrow of the forces directed in opposite direction, even if the code/procedure applied is the same -ex. WRC 107). Or does it depend only on the calculation software (like SANTAMBROGIO uses a convention, PVELITE another one, etc...). Tnks.
 
Replies continue below

Recommended for you

ElCidCampeador, no, no unique or standard convention that I've ever seen.

Regards,

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand
 
Come on - think about it - if everyone used the same axes convention (for example Fx being the axial load into the vessel) that would make it too simple - much better that everyone does it a different way using whatever axes they feel they want to use - much easier for mistakes in converting loads and moments to occur.

It's even worse wheh the Piping - Mechanical - Civil/Structural group all use different "global" axes on a Project which is quite often the case instead of everyone deciding on the axes convention at the start of a Project. Causes no-end of fun!!!!
 
If youre using EN 13445, refer to fig. 16.5-1: a definition of the convention here seems to have been applied.
 
I can't really agree with DSB123 about "...much better that everyone does it a different way using whatever axes they feel they want to use...", nonetheless, whatever the axes you choose to use, just make sure that you designate the orientation of these axes.
 
chicopee, pretty sure DSB123 was speaking in jest. At least I took it so :)
Regards,

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand
 
PD 5500-2015 is very clear and include "suggested working form"

Regards
r6155
 
r6155,
I disagree since in fig G.2.2-2 it shows for a radial load the load as being into the cylinder as being positive yet in Fig G.2.3-4 the radial force FR is shown positive outward from the cylinder. Very clear indeed!!!!
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor