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Nozzle loads convention

Nozzle loads convention

Nozzle loads convention

(OP)
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.

RE: Nozzle loads convention

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

RE: Nozzle loads convention

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!!!!

RE: Nozzle loads convention

(OP)
lol

RE: Nozzle loads convention

If youre using EN 13445, refer to fig. 16.5-1: a definition of the convention here seems to have been applied.

RE: Nozzle loads convention

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.

RE: Nozzle loads convention

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

RE: Nozzle loads convention

PD 5500-2015 is very clear and include "suggested working form"

Regards
r6155

RE: Nozzle loads convention

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!!!!

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