Thikness qualification for Tube to Tube sheet mock-up.

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hemant

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Dec 9, 2013, 4:44:16 AM12/9/13
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Dear Experts,

I have two Heat exchanger which same Tube sheet configuration Like tube hole PCD, Hole dia, Tube OD, Tube thickness, Weld design except Tube sheet thikness. My one job Thickness is 35 mm and second one is 45 mm.

Now pls suggest me for following points,

1.       Can I use one mock-up for both Heat exchanger?

2.       If I yes, which thickness I have to select?

 

 

Regards

Hemant H suthar

Asst. Manager QA/QC

Chemithon Engineers Pvt Ltd.

Khanvel-Kheradi Road. Silvassa, UT of DNH

Website: www.chemithon.co.in

Office Contact: 0260 2677889 / 2677036 , 37 Cell : 9712973092

 

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Venkatesan Velayudam

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Dec 9, 2013, 6:13:43 AM12/9/13
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Dear Mr.Hemant,

You can select job Thickness 45 mm . If the test will pass in 45 mm as per Sex IX  QW-193, QW-470 & ASME SecVII Div 1 Non- Mandatory appendix 'A', no need to do the mock up in 35 mm thick.



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Ashok Shende

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Dec 9, 2013, 7:23:32 AM12/9/13
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dear sir
u can take 10% of tube thkness as required thkness & 10% t/sheet ligament as per ASME
with Regards
A I Shende
GANSONS LTD NAGPUR.


On Mon, 09 Dec 2013 15:21:55 +0530 wrote
> Dear Experts,I have two Heat exchanger which same Tube sheet configuration Like tube hole
PCD, Hole dia, Tube OD, Tube thickness, Weld design except Tube sheet thikness. My one job
Thickness is 35 mm and second one is 45 mm. Now pls suggest me for following points,1. Can I
use one mock-up for both Heat exchanger?2. If I yes, which thickness I have to select?Regards
Hemant H sutharAsst. Manager QA/QCChemithon Engineers Pvt Ltd. Khanvel-Kheradi Road. Silvassa,
UT of DNH Website: www.chemithon.co.in Office Contact: 0260 2677889 / 2677036 , 37 Cell :
9712973092



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george....@gr.bureauveritas.com

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Dec 9, 2013, 12:44:39 PM12/9/13
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The thickness of the tube sheet is not relevant. More over it does not need to be larger than 50 mm.
Take care that the depth of the groove is an essential variable.

For more details please refer to QW-288 and  QW-193

    best regards

    Dr. Georgios Dilintas

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prem nautiyal

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Dec 9, 2013, 11:21:42 AM12/9/13
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Yes you can use one mockup for both Heat exchangers.
Go ahead with 45 mm thickness of T/S.
 
Also take Client/DEC/PMC approval for the mockup after satisfactory results.
 
Regards
 
Prem Nautiyal


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Malusare Vijay

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Dec 10, 2013, 12:18:00 AM12/10/13
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Dear Sir,

Please Read ASME Section IX, QW-288.

Vijay Malusare

Ganesh Mahankal

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Jan 22, 2014, 7:40:00 AM1/22/14
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Dear Hemant ,
 
Plz go with 45 mm thick tube plate thickness.tube sheet thickness is not a essential variable.it should not be greater than 50 mm.
Plz take care of expansion groove. it should be covered into tubesheet thickness.
 
Best regards,

Ganesh Mahankal


PEM -Welding
Tel direct: +91 20 27107 664 - Mobile: +91 9970357971

ganesh....@alfalaval.com
Contact me on MS Lync/Communicator: sip:ganesh....@alfalaval.com

Alfa Laval (India) Limited
Mumbai-Pune Road, Dapodi Pune - 411 012 Pune, Maharashtra - India
Registered Office: Mumbai Pune Road Dapodi Pune 411 012

veera raghava kommisetti

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Jan 22, 2014, 11:07:45 PM1/22/14
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Mockup itself is not mandatory....


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Ashok Shende

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Jan 23, 2014, 8:53:23 AM1/23/14
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dear sir

If the thickness of tube 2.5 OR less,10% can be take of specified tube thickness.



with Regards

A . I. SHENDE

GANSONS LTD
NAGPUR.






On Thu, 23 Jan 2014 10:35:37 +0530 wrote

>Mockup itself is not mandatory....

On Wed, Jan 22, 2014 at 4:40 PM, Ganesh Mahankal wrote:

Dear Hemant , Plz go with 45 mm thick tube plate thickness.tube sheet thickness is not a
essential variable.it should not be greater than 50 mm.
Plz take care of expansion groove. it should be covered into tubesheet thickness. Best regards,
Ganesh Mahankal

PEM -Welding

Tel direct: +91 20 27107 664 - Mobile: +91 9970357971
ganesh....@alfalaval.com


Contact me on MS Lync/Communicator: sip:ganesh....@alfalaval.com




Alfa Laval (India) Limited

Mumbai-Pune Road, Dapodi Pune - 411 012 Pune, Maharashtra - India

Registered Office: Mumbai Pune Road Dapodi Pune 411 012

  
On Monday, December 9, 2013 3:14:16 PM UTC+5:30, HEMANT SUTHAR wrote:

Dear Experts,I have two Heat exchanger which same Tube sheet configuration Like tube hole PCD,
Hole dia, Tube OD, Tube thickness, Weld design except Tube sheet thikness. My one job Thickness
is 35 mm and second one is 45 mm.
Now pls suggest me for following points,1.       Can I use one mock-up for both Heat exchanger?

2.       If I yes, which thickness I have to select? 
 Regards
Hemant H sutharAsst. Manager QA/QC

Chemithon Engineers Pvt Ltd. Khanvel-Kheradi Road. Silvassa, UT of DNH
Website: www.chemithon.co.in
Office Contact: 0260 2677889 / 2677036 , 37 Cell : 9712973092
 



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