GUIDELINES FOR SEISMIC EVALUATION AND DESIGN OF PETROCHEMICAL FACILITIES

Transcription

1 GUIDELINES FOR SEISMIC EVALUATION AND DESIGN OF PETROCHEMICAL FACILITIES Second Edition PREPAREDBY Task Committee on Seismic Evaluation and Design ofthe Petrochemical Committee ofthe Energy Division ofthe American Society ofcivil Engineers ASCEAMERICAN SOCIETY ~ OF CIVIL ENGINEERS 1801 ALEXANDER BELL DRIVE RESTON, VIRGINIA

2 Table of Contents Chapter 1: Introduction Objective Re1ated Industry Codes, Standards and Specifications Organization ofthe Document. 5 Chapter 2: Design and Evaluation Philosophy Introduction Considerations far New Design Considerations for the Evaluation ofexisting Facilities Cautions Regarding Design & Evaluation Performance Objectives and Occupancy Categories Design Approaches for New Facilities Evaluation ofexisting Structure I Rep1acement in Kind Considerations for Regu1atory Requirements Considerations for Temporary Facilities Structura1 Observation and Inspection Quality Assurance Peer Review 18 Chapter 3: Seismic Hazards Introduction Earthquake Basics Ground Shaking Design Ground Motions Ground Fai1ure Tsunami and Seiche 37 Appendix 3.A Ground Shaking 39 Appendix 3.B Earthquake Re1ated Coasta1 Inundation 51 vii

3 Chapter 4: Seismic Analysis lntroduction Structural Systems in a Petrochemical Facility Selection ofanalysis Procedures Equivalent Lateral Force Procedure Dynamic Analysis Methods Considerations for Existing Facilities 84 Appendix 4.A Typical Period (T) Computations for Nonbuilding Structures 89 Appendix 4.B Guidelines for Determination of Base Shear for Combination Structures 103 Appendix 4.C Determination ofbase Shear for Selected Structures 111 Appendix 4.D Stability Check Using Energy Balance Approach 123 Appendix 4.E Methodology for Determination of Sliding Displacements 139 Appendix 4.F Appendix 4.G Guidance for Califomia Accidental Release Prevention (CalARP) Program Seismic Assessments 143 Examples of Configurations of Petrochemical Structures where Dynamic Analysis Is Recommended 191 Chapter 5: Primary Structural Design Introduction Design Criteria Design Considerations Structural Details Physical Interaction ofstructures and Components Geotechnical Considerations 247 Chapter 6: Walkdown Evaluations ofexisting Facilities Introduction Basis for Performing Walkdowns General Methodology System Considerations Evaluation ofcomponents Limitations 284 viii

4 Chapter 7: Design and Evaluation oftanks at Grade Introduction Past Earthquake Perfonnance offlat-bottomed Tanks Walkthrough Inspection Analytical Evaluation Mitigation ofseismic Effects Considerations for Future Investigation DesignofNewTanks 309 Chapter 8: Earthquake Contingency Planning Introduction Purpose Scope ofresponse Plan Pre-Earthquake Preparation Ineident Recognition Command & Control! Mobilization System Roles and Responsibilities ofteam Personnel Inspection Methodology Assembling oflnspection Data! Reporting Results 315 Chapter 9: Post-Earthquake Damage Assessment Introduction Pre-Investigation Activities Perfonning Field Inspections Evaluation ofload-carrying Systems Idcntification ofdamaged Structures Doeumentation Inspection Team Recommended Equipment 324 Chapter 10: Retrofit Design Introduction Upgrade Situations Criteria for Voluntary Seismic Upgrading Seismie Retrofit Considerations far Plant Structures and Buildings 326 ix

5 Chapter 11: New and Existing Marine on Terminals Introduction MOT Descriptions Historical Performance State ofpractice Overall Approach Existing Marine Oil Terminals 333 Chapter 12: International Codes Introduction Code Conformance Multiple Code Conformance Cautions when Performing Code Comparisons Vendor Issues Language Issues 339 Nomenclature 340 Glossary 344 References 348 Index 359 x