Creep Design: ASME VIII-1 VS EN13445

[FPPE]

Hi,

I would like to better understand how ASME VIII-1 and EN13445 consider creep design. For example, if I have a vessel in SA 516 Gr.70 (tabulated for creep from about 370 °C) with a design temperature of 400 °C, but the customer confirms to us that the equipment does not work under creep conditions because the operating temperature is 300 °C. How do the two codes deal with these cases?

Thank you in advance

 

[TGS4]

Just to better understand your question, what do you mean by "deal with"?

 

[XL83NL]

Based on the topics title, my first answer would be that ASME VIII-1 fat better addresses creep (materials properties, design rules, etc.) than EN 13445. Especially above 600 deg C EN 13445 is just lacing details.

But then your question is far different, so what exactly are you looking for?

Huub
- You never get what you expect, you only get what you inspect.

 

[GD2]

FPPE,
The question is if the operating temp is 300C, how did you set the design temp as 400? It s too big margin.

If you set the design temperature correctly, you will not fall into the creep as per stress Table 1A for SA-516 Gr 70.

GDD
Canada