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- since 1996 -
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athulraj
India, Joined Jan 2016, 7

athulraj

India,
Joined Jan 2016
7
14:24 Mar-05-2016
nozzle and node

what is the difference btw nozzile and node?

1
 
 Reply 
 
Dent
Consultant, NDE Manager NDELevel III/3
NDT Consultant, Canada, Joined Nov 1998, 250

Dent

Consultant, NDE Manager NDELevel III/3
NDT Consultant,
Canada,
Joined Nov 1998
250
14:47 Mar-05-2016
Re: nozzle and node
In Reply to athulraj at 14:24 Mar-05-2016 (Opening).

In my opinion nozzle is a connection to a pressure vessel. Node is the junction of structural supports.
There is probably a more proper description given in various specifications.

I am interested in hearing other replies

 
 Reply 
 
Steven Doc
Other, Quality Manager
Siemens Energy, Egypt, Joined Feb 2011, 187

Steven Doc

Other, Quality Manager
Siemens Energy,
Egypt,
Joined Feb 2011
187
16:07 Mar-05-2016
Re: nozzle and node
In Reply to athulraj at 14:24 Mar-05-2016 (Opening).

A nozzle is straightforward, a node is an oblique stub attachment, sometimes known as lateral joints.

 
 Reply 
 
Dent
Consultant, NDE Manager NDELevel III/3
NDT Consultant, Canada, Joined Nov 1998, 250

Dent

Consultant, NDE Manager NDELevel III/3
NDT Consultant,
Canada,
Joined Nov 1998
250
01:31 Mar-08-2016
Re: nozzle and node
In Reply to athulraj at 14:24 Mar-05-2016 (Opening).

In my opinion nozzle is a connection to a pressure vessel. Node is the junction of structural supports.
There is probably a more proper description given in various specifications.

I am interested in hearing other replies

 
 Reply 
 
Volodymyr
Engineering, Deputy Director for Technical Issues/Head of Testing Laboratory/Chief of department/NDT
Joint Stock Company, Portugal, Joined Mar 2016, 25

Volodymyr

Engineering, Deputy Director for Technical Issues/Head of Testing Laboratory/Chief of department/NDT
Joint Stock Company,
Portugal,
Joined Mar 2016
25
13:32 Mar-09-2016
Re: nozzle and node
In Reply to Steven Doc at 16:07 Mar-05-2016 .


reference - www.ndtinstrument.com

Better to see than to read ;)
1
 
 Reply 
 
Laurent
Consultant,
France, Joined Mar 2016, 16

Laurent

Consultant,
France,
Joined Mar 2016
16
15:58 Mar-10-2016
Re: nozzle and node
In Reply to Volodymyr at 13:32 Mar-09-2016 .

A node for pressure vessel can be understood as well as the junction the longitudinal weld and circumferential of the differents parts of a shell, head, ect... i.e. "T" configuration of the welds.

 
 Reply 
 
Steven Doc
Other, Quality Manager
Siemens Energy, Egypt, Joined Feb 2011, 187

Steven Doc

Other, Quality Manager
Siemens Energy,
Egypt,
Joined Feb 2011
187
18:31 Mar-10-2016
Re: nozzle and node
In Reply to Laurent at 15:58 Mar-10-2016 .

Laurent, I have never heard that before. Do you have a source of reference?

 
 Reply 
 
Laurent
Consultant,
France, Joined Mar 2016, 16

Laurent

Consultant,
France,
Joined Mar 2016
16
19:13 Mar-10-2016
Re: nozzle and node
In Reply to Steven Doc at 18:31 Mar-10-2016 .

Steven,

"7) All nodes shall be 100% examined," extract from a project procedure.

By checking the code (GOST R52630) 8.7.3
b) locations of junction (crossings) of welded joints;

So shall I understand it's not the appropriate word?

 
 Reply 
 
Steven Doc
Other, Quality Manager
Siemens Energy, Egypt, Joined Feb 2011, 187

Steven Doc

Other, Quality Manager
Siemens Energy,
Egypt,
Joined Feb 2011
187
09:33 Mar-13-2016
Re: nozzle and node
In Reply to Laurent at 19:13 Mar-10-2016 .

Hi Laurent,
I would understand a node on a pressure vessel to be exactly as shown in the image provided by Volodymyr.

I cannot comment on the excerpts you have quoted without having knowledge of them. However from what you posted I cannot see the link between an intersection of two welds in different directions being called nodes.

 
 Reply 
 
Nıgel Armstrong
Nıgel Armstrong
13:26 Mar-18-2016
Re: nozzle and node
In Reply to athulraj at 14:24 Mar-05-2016 (Opening).

Athulraj

If your questıon relates to PCN UT qualıfıcatıon then Volodymyr's and Steve's responses have explaıned all. However as you have not been specıfıc as to the source or context whıch ınspıred your query then you must also consıder Laurent's contrıbutıon.

 
 Reply 
 
Mario Talarico
NDT Inspector,
Italy, Joined May 2010, 423

Mario Talarico

NDT Inspector,
Italy,
Joined May 2010
423
22:15 Mar-18-2016
Re: nozzle and node
In Reply to Nıgel Armstrong at 13:26 Mar-18-2016 .

During nodes composition, tubular for jacket or plate for modules and structures, I never heard say the word “Nozzle”. By contrast in pressure components environment I have never seen use the word “node” for a nozzle, even when the nozzle configuration was variable geometry similar to the jacket nodes. I'm fine in the Dent definition: apparently terminologies which belong to two separate worlds, different from those indicated by Laurent.

A curiosity: the idea of “T” configuration as a butt weld joint bent at 90 degrees is still the first mental step for UT inspection of nozzles joint et similar. In this case UT nozzle control will be considered as 'extension' of the UT butt weld, with some benefit more than the UT butt weld due scanning ability from not-beveled side that puts maximum emphasis defects that open thickness.
greetings
mario

 
 Reply 
 
Jon Wallis
NDT Inspector, -
Netherlands, Joined Feb 2010, 626

Jon Wallis

NDT Inspector, -
Netherlands,
Joined Feb 2010
626
10:51 Mar-20-2016
Re: nozzle and node
In Reply to athulraj at 14:24 Mar-05-2016 (Opening).

I don't know whether it brings anything to the arguement but I looked up 'Node' in an (online) dictionary and as well as meaning a knob, protruberebce or swelling which closely relates to our English language understanding of what is meant in welding parlance, it also means ' A point or area where two lines, paths, or parts intersect or branch off' which may well be the meaning meant in Laurent's explanation.

 
 Reply 
 
Laurent
Laurent
18:21 Mar-24-2016
Re: nozzle and node
In Reply to Jon Wallis at 10:51 Mar-20-2016 .

Jon,

I think you're right.
Node, knob, in french "noeud" can be tranlated as a cross of welds in the same plane

So what is the exact word for the cross weld of longi, circular weld?

 
 Reply 
 
jon wallis
NDT Inspector, -
Netherlands, Joined Feb 2010, 626

jon wallis

NDT Inspector, -
Netherlands,
Joined Feb 2010
626
11:04 Mar-25-2016
Re: nozzle and node
In Reply to Laurent at 18:21 Mar-24-2016 .

I would refer to this as a T-junction.

 
 Reply 
 

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