GENERAL GUIDELINES FOR MATERIALS OF CONSTRUCTION FOR REFINERY UNITS

 GENERAL GUIDELINES FOR MATERIALS OF CONSTRUCTION FOR REFINERY UNITS

1. GENERAL                                                                                                                                 3
2. ABBREVIATIONS                                                                                                                    3
3. REFERENCE DOCUMENTS                                                                                                  3
   1. Project Specifications                                                                                                           3
   2. Main Engineering Standards                                                                                              3
   3. Main Licensors Documents / Specifications / Standards                                                   3
   4. International Standards and Guidelines                                                                              3
4. DESIGN LIFE & MINIMUM CORROSION ALLOWANCE FOR OPEN-ART

UNITS                                                                                                                                        4

1. MAIN CORROSION FORMS AND RELEVANT PREVENTIVE MEASURES                    5
   1. Sulfidic Corrosion                                                                                                               5
   2. Wet H2S damage (thinning / SSC / HIC / blistering)                                                          5
   3. Polythionic Acid Cracking                                                                                                  5
   4. HCl Corrosion                                                                                                                     5
   5. Caustic Corrosion                                                                                                                 5
   6. High Temperature Hydrogen Service                                                                                6
   7. Amine Corrosion (general corrosion)                                                                                 6
   8. Amine Cracking (ASCC)                                                                                                    6
   9. Ammonium Bisulfide Corrosion                                                                                          6
   10. Chloride Stress Corrosion Cracking (ClSCC)                                                                    6
   11. Sea Water Corrosion                                                                                                          7
   12. 885°F Embrittlement                                                                                                             7
   13. Temper Embrittlement                                                                                                        8
   14. Low Temperature                                                                                                               8
2. MAIN CORROSION FORMS FOR CRUDE DISTILLATION UNITS (CDU)                       8
3. MAIN CORROSION FORMS OF AMINE UNITS                                                                  8
4. MAIN CORROSION FORMS FOR SOUR WATER STRIPPER UNITS (SWS)                  9