Preface xiv
About the Authors xvii
Nomenclature xx
Chapter 1: Introduction 1
1-1 Case Histories 3
1-2 Definitions 10
1-3 Engineering Ethics 15
1-4 Myths About Process Safety 16
1-5 Individual Risk, Societal Risk, and Risk Populations 20
1-6 Voluntary and Involuntary Risk 20
1-7 Risk Perception 21
1-8 Accident and Loss Statistics 21
Chapter 2: Process Safety Overview 31
2-1 Professional Organizations 35
2-2 Hazards 36
2-3 Safety Culture 39
2-4 Safety Metrics 41
2-5 Codes, Standards, and Regulations 43
2-6 Safeguards and Layers of Protection 45
2-7 Inherently Safer Design 52
2-8 Risk Tolerance/Acceptance and Risk Matrix 56
2-9 Safe Work Practices 60
2-10 Designing for Process Safety 63
2-11 Safety Reviews 69
Chapter 3: The 20 Elements of Risk-Based Process Safety (RBPS) 77
3-1 Element 1: Process Safety Culture 85
3-2 Element 2: Compliance with Standards 86
3-3 Element 3: Process Safety Competency 87
3-4 Element 4: Workforce Involvement 88
3-5 Element 5: Stakeholder Outreach 88
3-6 Element 6: Process Knowledge Management 89
3-7 Element 7: Hazard Identification and Risk Analysis 90
3-8 Element 8: Operating Procedures 91
3-9 Element 9: Safe Work Practices 92
3-10 Element 10: Asset Integrity and Reliability 93
3-11 Element 11: Contractor Management 94
3-12 Element 12: Training and Performance Assurance 95
3-13 Element 13: Management of Change 96
3-14 Element 14: Operational Readiness 97
3-15 Element 15: Conduct of Operations 98
3-16 Element 16: Emergency Management 99
3-17 Element 17: Incident Investigation 101
3-18 Element 18: Measurements and Metrics 102
3-19 Element 19: Auditing 103
3-20 Element 20: Management Review and Continuous Improvement 104
3-21 Summary 105
Chapter 4: The Multi-Purpose Pilot Plant Vessel (PPV) 109
4-1 Pilot Plant Protocols 116
4-2 Material Compatibility 117
4-3 Pilot Plant Vessel Specifications 117
Chapter 5: Toxicology 129
5-1 Toxicology, Toxicity, and Toxic Hazard 130
5-2 Toxic Hazards 131
5-3 Toxicological Studies 138
5-4 Threshold Limit Values 151
5-5 Downwind Emergency Response Values 154
Chapter 6: Industrial Hygiene 163
6-1 Anticipating and Identifying Hazardous Workplace Exposures 165
6-2 Globally Harmonized System 168
6-3 National Fire Protection Association Diamond 175
6-4 Evaluate the Magnitude of Exposures and Responses 176
6-5 Develop and Evaluate Control Techniques to Prevent Exposures 194
Chapter 7: Source Models 209
7-1 Introduction to Source Models 210
7-2 Flow of Liquid Through a Hole 214
7-3 Flow of Liquid Through a Hole in a Tank 217
7-4 Flow of Liquids Through Pipes 221
7-5 Flow of Gases or Vapors Through Holes 232
7-6 Flow of Gases or Vapors Through Pipes 237
7-7 Flashing Liquids 256
7-8 Liquid Pool Evaporation or Boiling 262
7-9 Realistic and Worst-Case Releases 263
7-10 Conservative Analysis 265
Chapter 8: Hazardous Material Dispersion 275
8-1 Parameters Affecting Dispersion 277
8-2 Neutrally Buoyant Dispersion Models 281
8-3 Pasquill–Gifford Model 282
8-4 Dense Gas Dispersion 296
8-5 Release Prevention and Mitigation 297
Chapter 9: Fires and Explosions 307
9-1 The Fire Triangle 308
9-2 Distinction Between Fires and Explosions 310
9-3 Definitions 310
9-4 Flammability Characteristics of Liquids and Vapors 313
9-5 Mists and Sprays 338
9-6 Fire Types 339
9-7 Flammability Characteristics of Dusts 345
9-8 Ignition Energy 346
9-9 Ignition Sources 348
9-10 Experimental Characterization of Gas/Vapor and Dust Explosions 349
9-11 Explosions 357
Chapter 10: Concepts to Prevent Fires and Explosions 383
10-1 Inerting 384
10-2 Static Electricity 399
10-3 Controlling Static Electricity 416
10-4 Explosion-Proof Equipment and Instruments 425
10-5 Ventilation 427
10-6 Sprinkler Systems 431
10-7 Designs for Process Safety 434
10-8 Hot Work 438
10-9 Industry's Fire and Explosion Protection Strategy 439
Chapter 11: Chemical Reactivity 447
11-1 Background Understanding 448
11-2 Commitment, Awareness, and Identification of Reactive Chemical Hazards 451
11-3 Characterization of Reactive Chemical Hazards Using Calorimeters 458
11-4 Designs for Chemical Reactions 485
Chapter 12: Introduction to Reliefs 493
12-1 Relief Concepts 495
12-2 Definitions 496
12-3 Code Requirements 498
12-4 Relief System Design 502
12-5 Relief Types and Characteristics 507
12-6 Relief Installation Practices 517
12-7 Relief Effluent Handling 519
Chapter 13: Relief Sizing 529
13-1 Set Pressure and Accumulation Limits for Reliefs 532
13-2 Relief Sizing for Liquid Service 534
13-3 Relief Sizing for Vapor and Gas Service 541
13-4 Omega Method for Two-Phase Reactive Relief 548
13-5 Deflagration Venting for Dust and Vapor Explosions 558
13-6 Venting for Fires External to Process Vessels 564
13-7 Reliefs for Thermal Expansion of Process Fluids 568
Chapter 14: Hazards Identification and Evaluation 577
14-1 Introduction to Hazard Identification/Evaluation and Risk Analysis 580
14-2 Non-Scenario-Based Hazard Identification/Evaluation Methods 588
14-3 Scenario-Based Hazard Identification/Evaluation Methods 596
14-4 Documentation and Actions Required for Hazard Identification and
Chapter 15: Risk Analysis and Assessment 615
15-1 Probability Theory for Equipment Failures 617
15-2 Event Trees 630
15-3 Fault Trees 635
15-4 Bow-Tie Diagrams 642
15-5 Quantitative Risk Analysis 644
15-6 Layer of Protection Analysis 644
15-7 Risk Assessment 656
Appendix A: Unit Conversion Constants 665
Appendix B: Flammability Data for Selected Hydrocarbons 669
Appendix C: Saturation Vapor Pressure Data 675
Appendix D: Special Types of Reactive Chemicals 677
Appendix E: Hazardous Chemicals Data for a Variety of Chemical Substances 683
Appendix F: Process Diagrams 697
Appendix G: Process Development Area (PDA) General Specifications 701
Appendix H: Specifications for the 100 Gallon (378.5 L) Multi-Purpose Pilot Plant Vessel (PPV) 709
Appendix I: Personal Protective Equipment (PPE) Usage Guidelines for the Process Development Area (PDA) 715
Index 719