| Skinner Tank Company Specializing in API Standard 650 Welded Steel Storage Tanks |
| American Petroleum Institute Standard 650 (API 650) API 650 covers materials, design, fabrication, erection, and testing requirements for vertical, cylindrical, aboveground, closed- and open-top, welded steel storage tanks in various sizes and capacities for internal pressures approximating atmospheric pressure. API 650 applies only to tanks whose entire bottom is uniformly supported and to tanks in nonrefrigerated service that have a maximum operating temperature of 200 F. API 650 is designed to provide industry with tanks of adequate safety and reasonable economy for use in the storage of liquid products. Contact API: 202-682-8000 or visit their web site by clicking HERE Contents of API 650: Section 1 - Scope Section 2 - Materials Section 3 - Design Section 4 - Fabrication Section 5 - Erection Section 6 - Methods of Inspecting Section 7 - Welding Procedures and Qualifications Section 8 - Marking Appendix A - Optional Design for Small Tanks Appendix B - Foundation Recommendations Appendix C - External Floating Roofs Appendix D - Technical Inquiries Appendix E - Seismic Design Appendix F - Small Pressure Tanks Appendix G - Aluminum Domed Roofs Appendix H - Internal Floating Roofs Appendix I - Leak Detection Appendix J - Shop Tanks Appendix K - Variable Design Point Method Appendix L - Data Sheets Appendix M - Elevated Temperature Tanks Appendix N - Materials Not Identified Appendix O - Under Bottom Connections Appendix P - Loads on Tank Shell Openings Appendix S - Stainless Steel Tanks |