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TUBE END WELDS PWHT IN PD5500 CODE?

TUBE END WELDS PWHT IN PD5500 CODE?

TUBE END WELDS PWHT IN PD5500 CODE?

(OP)
Hi folks

Just a quick question please. I have a tubesheet which is ASTM A350 LF2 Class 2 forging. Tubes are A334 Grade 6 material, 2.11 mm wall thickness. Design temperature is minus 46 degrees centigrade.

Could anyone please point me to specific PWHT or local heat treatment requirements for PD5500 design Code?

Many thanks

Chris

RE: TUBE END WELDS PWHT IN PD5500 CODE?

Are you sure you even need PWHT for tube to tubesheet welds?

RE: TUBE END WELDS PWHT IN PD5500 CODE?

Are these strength welds or seal welds?
But either way I don't believe that PWHT is required

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P.E. Metallurgy, Plymouth Tube

RE: TUBE END WELDS PWHT IN PD5500 CODE?

hi there,

I think you should go for a mock up test before proceeding for any kind of heat treatment. As discussed in above threads, chances are that you may not need a heat treatment and with the mock up test you can also establish a procedure for future requirements.

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