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)