[MW:19586] RE: 19581] Re: Dissimilar Base Metal thikness QW-202.4

Dear Sir,

My Qualified PQR is on 10 mm Plate thickness with P1 to P8 material.  Now my Heat exchanger Tube sheet is P8 SA240 304  37 mm Thk and my shell is SA 516 gr.70  10 mm Thk.

Joint details is as shown below sketch. Kindly pls conform me can I do or not. Because I get 50-50% answer without any technical clarification. If possible pls help.

Thanks in advance.

 

HHS

 

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of S.Mohammed
Sent: 13 December 2013 13:04
To: materials-welding@googlegroups.com
Cc: Hardik Pandya
Subject: [MW:19581] Re: Dissimilar Base Metal thikness QW-202.4

 

 

Dear sir,

 

Thanks for reply,

 

Pl find attachment for Joint Reference,Materials-P1-P1 available WPS qualified up to 20mm

 

Fig-1 : Considering 202.4 dissimilar joint requirement, base metal qualification up to 65mm need for welding   YES/NO

 

 Fig-2 : Considering 202.4 dissimilar joint requirement, base metal qualification up to 65mm need for welding   YES/NO 

 

 Fig-3 : Considering 202.4 dissimilar joint requirement, base metal qualification up to 65mm need for welding   YES/NO 

 

 Fig-4 : Considering 202.4 dissimilar joint requirement, base metal qualification up to 65mm need for welding   YES/NO 

 

regards,

mohd.

 

 

On Monday, December 9, 2013 7:41:49 AM UTC, HEMANT SUTHAR wrote:

Dear Sir,

I have to weld SA 516 Gr.70 (37mm Thk) Tube sheet to SA 516 Gr.70 (10 mm Thk) Shell as per below given weld details.

I have Qualified WPS of  P1 to P1 material for 20 mm max. Base metal Thikness.

Now as per QW-202.4 Thicker member Thickness shall be within the range permitted by QW-451. My thicker member thickness is 37 mm.

Kindly pls explain me to can I use WPS yes or No with explanation.

 

 

 

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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