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API 570 Temp Data
API 570
Question | Answer |
---|---|
CUI affects Carbon Steel (Temperature Range) | 25 – 250 oF |
B31.3 Recommended Minimum Preheat Temps become Required | </= 32 oF |
Standard temperature range for a PT exam. | 40 – 125 oF |
Minimum flash point of hydrocarbons used for leak testing | 120 oF |
Temp when UT readings should be compensated for temperature. | >/= 150 oF |
CUI affects Stainless Steel (Temperature Range) | 150 – 400 oF |
Minimum pre-heat temperature when performing pre-heat in lieu of a PWHT | 300 oF |
Minimum pre-heat temperature when performing a local PWHT in lieu of a full encirclement PWHT | 300 oF |
Starting temperature of Sulfidation on Carbon Steel (sulfur content > 0.5% by weight) Per API 570 | 450 oF |
Operating temperature which causes temper-embrittlement of low chromes (temperature range) | 700 – 1070 oF |
Graphitization begins for Carbon Steel materials | 800 oF |
Creep begins in 1-1/4% Chrome materials | 900 oF |
Maximum temperature for UT transducers with special delay lines (Per API 574) | 1100 oF |
Carbon Steel PWHT temperature | 1100 – 1200 oF |