Guidelines for the Seismic Design and Assessment …

1 Catalog No. L51927 Guidelines for the Seismic Design and Assessment of Natural Gas and Liquid Hydrocarbon Pipelines Contract PR-268-9823 Prepared for the Pipeline Design , Construction & Operations Technical Committee of Pipeline Research Council International, Inc. Prepared by the following Research Agencies: Honegger Consulting Nyman and Associates Authors: Douglas G. Honegger Douglas J. Nyman Publication Date: October 1, 2004 PR-268-9823 Guidelines FOR THE Seismic Design AND Assessment OF NATURAL GAS AND LIQUID HYDROCARBON PIPELINES PART I Guidelines AND RECOMMENDED PROCEDURES PR-268-9823 Table of Contents GENERAL Alternate Required Pipe Soil Seismic Hazard 1- 11 QUANTIFYING Seismic Surface Empirical Methods for Estimating Fault Orthogonal Displacement Design Fault Peak Ground Near Source Earthquakes in the Western United Cascadia Assessing Liquefaction Displacements Associated with Relative Displacements Related to Liquefaction-Induced

2 Lateral Spread Seismic Wave Transient Ground PIPELINE PERFORMANCE New Pipelines and Pipelines Compatible with Modern Construction Performance Goal: Maintain Pressure PR-268-9823 Performance Goal: Maintain Normal Load-Controlled Considerations for Offshore Pipelines Not Compatible with Current Construction PIPELINE ANALYSIS Pipe Element Pipe Stress-Strain Soil Spring Axial Soil Lateral Soil Vertical Uplift Soil Vertical Bearing Soil Extent of Pipeline Representation of Applied Ground Sensitivity MITIGATION Modifying Pipeline Loading Reducing Soil Loads by Minimizing Soil Strength Unanchored Isolating Pipelines from Ground Modify Pipeline Modify Emergency Response APPENDIX A: Considerations for Establishing Performance Goals APPENDIX B.

3 Seismic Design Provisions in Existing Standards APPENDIX C: Probabilistic Seismic Hazard Analysis APPENDIX D: Example Calculations APPENDIX E: Guideline Reviewers PR-268-9823 Guidelines FOR THE Seismic Design AND Assessment OF NATURAL GAS AND LIQUID HYDROCARBON PIPELINES PART II COMMENTARY PR-268-9823 Table of Contents GENERAL Alternate Required QUANTIFYING Seismic Surface Empirical Methods for Estimating Fault Orthogonal Displacement Design Fault Peak Ground Assessing Liquefaction Displacements Associated with Relative Displacements Related to Liquefaction-Induced Lateral Spread Seismic Wave Transient Ground PIPELINE PERFORMANCE New Pipelines and Pipelines Compatible with Current Construction

4 Performance Goal: Maintain Pressure Performance Goal: Maintain Normal Load-Controlled Considerations for Offshore Pipelines Not Compatible with Current Construction PIPELINE ANALYSIS Pipe Element Pipe Stress-Strain PR-268-9823 Soil Spring Extent of Pipeline Representation of Applied Ground Sensitivity MITIGATION