Tube to Tubesheet mockup for HE and double pipe Exchangers.Re: [MW:34549] Tube to tube sheet WPS qualification

Dear All

Greetings for the day. 

We are carrying out a fabrication order which has

1) Double pipe Exchangers 

MOC CS to CS

Sizes 3" X 2" NB

 3" X 1" NB

2) Double pipe Exchangers 

MOC SS304 to SS304

Sizes 3" X 2" NB

3) Shell and PIPE Exchangers having Pipe to tubesheet joints

Moc Tubesheet 69mm thk SA387Gr. 11 to pipe 65NB Sch 80 SA335P11  . 

4) Shell and tube Exchangers having Tube SS304 to tubesheet SA387Gr. 11 joints

Moc CS to CS  sizes of tube :12.7OD  x 3thk 

5) Shell and tube Exchangers having Tube DSS31803 to tubesheet SA516Gr. 70 joints

  sizes of tube :12.7 OD x 3thk

My query is 

How many mock up test are to be established. 

Fabrication is as per SecVIII div 1.

Thanks in advance

Amit 9833859030

On Fri, 9 Sept, 2022, 10:25 am 'Prakash Hegde' via Materials & Welding, <materials-welding@googlegroups.com> wrote:

Hi

You req to qualify Mock up for T to Tsht joint as per secIX all reqmnt is addressed

This ll be used as PQR n  WPS also

Regards

Hegde

Sent from Yahoo Mail on Android

On Fri, 9 Sep 2022 at 10:09, sujit kumar

<sujitkumar19942@gmail.com> wrote:

Dear sourav sir,

Thanks for the information whatever you have given it is really useful for me.......

sir I want to qualify new WPS for that tube-to-tube sheet because tube thickness is only 0.9 mm and tube od is 12.5 mm because I am not having WPS which lies in this thickness. please guide...??

On Fri, 9 Sept 2022 at 09:31, Sourav Bohrays <souravbohrays@gmail.com> wrote:

Dear sujit

If your code of construction is asme sec8 div1 no need of mockup you can use groove weld qualified wps for tuve to tubesheet

If code of construction is asme sec8 div2 its mandatory to do mockup.

If you have any earlier qualified tube to tubesheet mockup you can use by providing essential variable for tube to rubesheet in sec9

On Thu, 8 Sept 2022, 1:51 pm sujit kumar, <sujitkumar19942@gmail.com> wrote:

Hello sahil saini sir.

I would like to inform you that I know that clause but there is so many dought i am getting like 

If I want to do welding flange to tube....how to prepare WPS for that..???

Is there demonstration required for this tube to tube sheet...??

What test required in that WPS??

Please explain me it would be greatful  for me 

Best Regards

Sujit kumar

On Thu, Sep 8, 2022, 10:43 Shahil Saini <sainishahil98@gmail.com> wrote:

 Hello Sujit,

You shall refer ASME section IX Article-1 (QW-193) for tube to Tubesheet tests.

Thanks & Regards

Shahil Saini 

On Thu, Sep 8, 2022, 08:29 sujit kumar <sujitkumar19942@gmail.com> wrote:

Dear all,

Greeting for the day.

Please guide me regarding tube to tube sheet WPS Qualification.

We are having 8'' and 20'' flange and

 tube size 12mm Od 

thickness of the tube is 0.9 mm

Best regards

Sujit kumar

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