API 327 : 1994

1.0 INTRODUCTION AND SCOPE
2.0 SUMMARY OF PROCEDURES
     2.1: LOGIC DIAGRAM FOR TANK DESIGN & EVALUATION
     2.2: LOGIC DIAGRAM FOR BOTTOM EVALUATION
     2.3: LOGIC DIAGRAM FOR SHELL EVALUATIONS
3.0 BASIC DATA REQUIREMENTS
     FIGURE 3.0 - HIGH PRIORITY DATA
4.0 BOTTOM SELECTION
     Case 1 - Basic Design Data for 150,000 BARREL API
              STD 650 Tank
     Case 2 - Basic Design Data for 10,000 BARREL
              Gasoline Storage Tank
     Case 3 - Basic Design Data for 500 BARREL
              Production Fluid Tank
     Example 4.1 - Ground/Bottom Contact - 150,000
                   Barrel Tank
     Example 4.2 - Ground/Bottom Contact - 10,000
                   Barrel Gasoline Tank
     Example 4.3 - Ground/Bottom Contact - 500 Barrel
                   Production Tank
     Example 4.4 - Cathodically Protected Bottom

     Example 4.5 - Leak Detection/Containment System
     Example 4.6 - Leak Detection/Containment System
     Example 4.7 - Internal Bottom Lining
     Example 4.8 - Internal Bottom Lining and Cathodic
                   Protection
5.0 INSPECTION
     FIGURE 5.1
     FIGURE 5.2
6.0 BOTTOM FLAWS
     FIGURE 6.1
     Example 6.1 - Bottom Settlement
     Example 6.2 - Bottom Corrosion
7.0 SHELL EVALUATION
     Example 7.1 - Minimum Shell or Ring Thickness
     Example 7.2 - Risk of Brittle Fracture
Appendix A
Appendix B
Appendix C
Appendix D
Appendix E
Appendix F
Appendix G
Appendix H

Presents procedures and examples to help designers, owners and operators of aboveground storage tanks understand and comply with API's Recommended Practices, Standards and Specifications concerning leak prevention.