CONTENTS. Foreword...iii. 1. Introduction...1

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2 Installation of Aboveground Storage Systems for Motor-Vehicle Fueling CONTENTS Foreword...iii SECTIONS 1. Introduction Background Purpose Scope Source Use of PEI/RP Importance of Competent Installers Written Plans and Specifications Federal Regulations Approval of Local Authorities Site Planning Tank Location Tank Configurations Property Lines and Buildings Tank-Spacing Requirements Bases and Foundations Retail Service Stations Commercial Fleet-Fueling Facilities Marinas Product Deliveries Traffic Flow SPCC Plan Electronic Equipment Physical Protection Fire Protection Utilities Emergency Planning Foundations, Support, and Anchorage General Soil Analysis Tank-Foundation Design Excavation Base Course Vertical Tank Bases Horizontal-Tank Saddles Electrical Isolation of Tank Saddles Reinforced-Concrete Tank Slabs Anchoring Dikes Purpose Dike Capacity Dike Construction Impervious Barrier Dike Penetrations Access Drainage Control Oil/Water Separator...8 v

3 PEI Recommended Practices Vaults and Special Enclosures General Vault Design Vault Construction Venting Leak Detection Liquid Recovery Vault Ventilation Collision Protection Electrical Installation Special Enclosures Tanks General Standards Underwriters Laboratories Horizontal Tanks Vertical Tanks Insulated and Fire-Protected Tanks Listed Tank Systems Steel Tank Institute Tank Openings Preinstallation Inspection Material Handling Air-and-Soap Test Preparation Testing Equipment Testing Procedures Testing Multi-Walled Tanks Pumps and Valves Materials and Design Pumping Systems Suction-Pumping Systems Remote-Pumping Systems Fire/Emergency Valves Block Valves Anti-Siphon Valves Check Valves Pressure-Relief Valves Tank Filling, Gauging, Dispensing, and Venting Materials and Design Tank Filling Submerged-Fill Tubes Spill Prevention Overfill Protection Hydraulic Shock Dispensing Systems Gauging Systems Tank Venting Normal Venting Emergency Venting...17 vi

4 Installation of Aboveground Storage Systems for Motor-Vehicle Fueling 9. Aboveground Piping and Fittings General Requirements for Aboveground Piping Aboveground-Piping Materials Aboveground-Piping Practices Aboveground-Piping Layout Fittings for Aboveground Piping Testing Aboveground Piping Corrosion Protection for Aboveground Piping Underground Piping and Fittings General Requirements for Underground Piping Underground-Piping Materials Underground-Piping Practices Underground-Piping Layout and Trenches Underground-Piping Backfill and Compaction Fittings for Underground Piping Flexible Connectors Unions Corrosion Protection for Underground-Piping Components Underground Fiberglass Piping Underground Flexible Piping Containment Sumps Testing of Underground Primary Piping Initial Test Monitoring During Construction Final Tightness Test Testing of Underground Secondary Piping Initial Test for Underground Secondary Piping Monitoring During Construction Final Tightness Test for Secondary Piping Corrosion Protection General Applicability Coatings Tank-Bottom Coatings Fiberglass Coatings Protection of Buried Metallic Components Galvanic Cathodic Protection Galvanic Anode Installation Galvanic Cathodic Protection for Piping Galvanic Cathodic Protection of Tank Bottoms Impressed Current Systems Wiring and Electrical Connections Inspection and Testing Environmental Protection General Release-Detection Methods Release Detection Using Secondary Containment Release Detection Using Volumetric Methods Piping Release Detection Vapor Recovery...25 vii

5 PEI Recommended Practices Electrical Installation General Requirements Classifications Electrical Equipment Emergency Shut-Off Wiring Intrinsically Safe Grounding and Bonding Ensuring Uninterrupted Power Testing and Inspection General Test Results Other Testing Documentation, Maintenance, and Training As-built Drawings Component Documentation Scheduled Maintenance Training...29 APPENDICES Appendix A: Size Calculations for Dikes...30 A.1 Volume Calculation...30 A.2 Information Available...30 A.3 Required Containment Volume...30 A.4 Vertical Tanks...30 A.5 Unavailable Capacity...31 A.6 Calculation of Dike Height...31 A.7 Horizontal Tanks...31 A.8 Horizontal Tank Dike Dimensions...31 A.9 Unavailable Capacity Horizontal Tanks...31 A.10 Additional Requirements...32 Appendix B: Venting...32 B.1 Purpose...32 B.2 Operating/Design Pressure...32 B.3 Normal Venting...33 B.4 Pressure/Vacuum Vents...33 B.5 Emergency Venting...33 B.6 Emergency Vent Sizing...33 B.7 Vent Selection...33 B.8 Calculations for a Cylindrical Horizontal Tank...33 B.9 Calculations for a Cylindrical Vertical Tank...34 B.10 Calculations for a Rectangular Tank...34 Appendix C: Code Requirements for ASTs Dispensing Fuels at Motor Vehicle Fuel-Dispensing Stations...37 Appendix D: Publication Reference...39 viii