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TEMPERATURE READING IN API 510 EXAMS
1. Corrosion Engineer Shall Be Consulting When Developing The Inspection Plan Of Vessels Operating At Elevated Temp
Above 750◦ F(400◦ C) (General)
2. Cui Externally Insulated Vessel Intermittent Service Or Operate Between
10◦ F to 350◦ F(-12◦ C to175◦ C) – For Carbon And Low Alloy Steel
140◦ F to 400◦ F (60◦ C to 185◦ C) – Austenic Stainless Steel And
280◦ F to 350◦ F (138◦ C to 185◦ C)- Duplix Stainless Steel
3. Ut(Thick )
Above 150◦ F (65◦ C) Not Use
4. Minimize The Brittle Fracture Keep The Metal Temp
30◦ F (17◦ C)Mdmt – Above 2”Thick (API 510 -5.8.7.2)
5. Minimize The Brittle Fracture Keep The Metal Temp
10◦ F (6◦ C)Mdmt – Below 2”Thick (API 510 -5.8.7.2)
6. In Alternative Of Pwht – Alteration Or Repair Preheat Temp Min
300◦ F (150◦ C) (API 510 -8.1.7.4.2)
7. In Alternative Of Pwht – Alteration Or Repair Interpass Temp Max
600◦ F (315◦ C) (API 510 -8.1.7.4.3.2)
8. Operating Temp Of Vessel In Cui
-4◦ C To 120◦ C (Api 572)
9. Local Pwht Substituted For 360◦ banding-Local Repair
Pre Heat 300◦ F (150◦ C) Are Higher (API 510 -8.1.7.4.2)
10. Shielding Gas Shall Exhibit A Dew Point No Higher Than
-60◦ F (-50◦ C) (API 510 – 8.1.7.4.3.3)
11. Design Temp Of Pressure Vessel Not Exceeded
210◦ F (99◦ C) (Sec VIII- U1)
12. Caustic Stress Corrosion Cracking (Caustic Embrittlment) – Crack Or High Stress Occur When Temp Over 400◦ F (204◦ C)(API
571)
13. High Temperature Sulfide Corrosion
Over 400◦ F (204◦ C) (API 571 – Table of content)
14. Temper Embrittlement (Structural Change)
Temp Exceed 650◦ F To 1100◦ F (345◦ C – 595◦ C) (API 510 – 3.1.69)
15. Thermal Fatigue
Cyclic Stress Caused By Variation In Temp Exceed 200◦ F (93◦ C) (API 571 – 4.2.9)
16. Cooling Water Corrosion Process Side Temp Is Above 140◦ F (60◦ C) & Brackish And Salt Water Outlet Temp Above 115◦ F
(46◦ C) (API 571 – 4.3.4)
17. Sulfidation
Metal Temp Above 500◦ F (260◦ C) (API 571 – 4.4.2)
18. CL Stress Corrosion Cracking (CLSCC)
Metal Temp Above 140◦ F (60◦ C) (API 571 – 4.5)
19. Atmospheric Corrosion
250◦ F (121◦ C) (API 571 – 4.3.2)
20. In Temper Bead Welding The Heat Consideration Is
500 ◦ F +/- 50◦ F (260 ◦ C +/- 30◦ C) (API 510 – 8.1.7.4.3.3)
21. Lamination Found heat Approximately 200◦ F to open (API 572)
22. Hydro Testing Solid Or Clad Austenitic Stainless Steel Water Temp Upto 120◦ F (50◦ C)