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ASME FFS-1/API-579-1.........Figure 10.3

ASME FFS-1/API-579-1.........Figure 10.3

(OP)
I have a question on Figure 10.3 (ASME FFS-1/API-579-1)
Material (SA-516-70) is exposed to a temperature 1500F for 45 minutes due to fire incident.
Figure 10.3 enlists the curves up to a maximum temperature 1200F.
How to make use of Figure 10.3 in this case? Thanks.

Javed Nasir
Inspection Engineer
Technip-France Abu Dhabi

RE: ASME FFS-1/API-579-1.........Figure 10.3

If you look at ASME VIII part D then SA516 70 only has allowable stress values quoted up to 550 Deg C (1022 Deg F). Also the UTS is given to 525 Deg C) maximum and the Yield Strength is listed up to 525 Deg C(977 Deg F). Hence why I beleive ASME FFS-1/API-579-1 only gives curves for 1200 F. (i.e. the material is no good for temperatures above 1200F)

RE: ASME FFS-1/API-579-1.........Figure 10.3

That's the wrong approach to deal with such a short term exposure. Please enlist the help of an expert in fire damage to work with you.

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