(Ebook PDF) Industrial Valves Calculations for Calculations Manufacturing Operation and Safety Decisions 1st edition by Karan Sotoodeh 9781394185054 full chapters

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ISBN-13 :  9781394185054

Author:  Karan Sotoodeh

Industrial valves are used to regulate the flow of liquids, gases, or slurries. They are fundamental to multiple industries, including marine shipping, in which valves regulate power supply, wastewater, water for fire-fighting, and other shipboard essentials. They are also critical to the oil and gas industry, where valves are used to control the flow of oil or gas out of deposits, direct the crude oil refining process, protect key areas and equipment from spillage and overflow, and more. Without the safety and regulating power provided by industrial valves these industries could not proceed.

 

Industrial Valves: Calculations for Design, Manufacturing, Operation, and Safety Decisions 1st Table of contents:

1 Flow Capacity 1

1.1 Introduction 1

1.2 Flow Coefficient Chart and Flow Curve 8

1.3 Rangeability and Turndown 12

1.4 Valve Authority 14

1.5 Valve Gain 15

Questions and Answers 16

Further Reading 20

2 Valve Sizing 22

2.1 Introduction 22

2.2 Isolation Valve Sizing 22

2.3 Nonreturn (Check) Valve Sizing 26

2.4 Control Valve Sizing 34

2.4.1 Control Valve Sizing for Liquids 34

2.4.1.1 Specify the Variables Required to Size the Valve 35

2.4.1.2 Determine the Equation Constant (N) 37

2.4.1.3 Determine Piping Geometry Factor (F_P) 37

2.4.1.4 Determine the Maximum Flow Rate (q_max) and Maximum Pressure Drop (ΔP_max) 39

2.4.1.5 Solve for Flow Coefficient 44

2.4.1.6 Select the Correct Valve Size 44

2.4.2 Control Valve Sizing for Gas and Steam 47

2.4.2.1 Specify the Variables Required to Size the Valve 47

2.4.2.2 Determine the Equation Constant (N) 48

2.4.2.3 Determine Piping Geometry Factor (F_P) 48

2.4.2.4 Determine the Expansion Factor (Y) 48

2.4.2.5 Solve for the Required Flow Coefficient (C_v) 50

2.5 Safety Relief Valve Sizing 56

2.5.1 Sizing for Gas or Vapor Relief 59

2.5.1.1 Critical Flow 59

2.5.1.2 Subcritical Flow 73

2.5.2 Sizing for Steam Relief 75

2.5.3 Sizing for Liquid Relief 79

2.5.3.1 Sizing for Liquid Relief with Capacity Certification 79

2.5.3.2 Sizing for Liquid Relief Without Capacity Certification 84

2.5.4 Sizing for Two-Phase Liquid/Vapor Relief 85

2.5.4.1 Sizing for Saturated Liquid and Saturated Vapor, Liquid Flashes 88

2.5.4.2 Sizing for Subcooled at the Pressure Relief Valve Inlet 91

2.5.5 Sizing for Fire Case and Hydraulic Expansion 93

2.5.5.1 Hydraulic Expansion (Thermal Expansion) 95

2.5.5.2 Sizing Safety Valve for the Fire Case 96

Questions and Answers 103

Further Reading 110

3 Cavitation and Flashing 112

3.1 Introduction 112

3.2 Cavitation 112

3.2.1 What is Cavitation? 112

3.2.2 Cavitation Essential Parameters 113

3.2.3 Cavitation Analysis 115

3.3 Flashing 116

Questions and Answers 118

Further Reading 123

4 Wall Thickness 125

4.1 Introduction 125

4.2 ASME B16.34 Minimum Wall Thickness Calculation 125

4.2.1 Conservation Approach (Mandatory Appendix A) 125

4.2.2 Nonconservation Method 129

4.2.3 ASME Sec. VIII Div. 02 Wall Thickness Calculation 134

4.3 Wafer Design Thickness Validation 136

Questions and Answers 142

Further Reading 147

5 Material and Corrosion 149

5.1 Introduction 149

5.2 Carbon Dioxide Corrosion 150

5.2.1 Corrosion Mechanism 150

5.2.2 Corrosion Mitigation 151

5.2.3 Corrosion Rate Calculation 152

5.2.3.1 Basic CO₂ Corrosion Rate 152

5.2.3.2 Corrective CO₂ Corrosion Rate 154

5.2.3.3 Final CO₂ Corrosion Rate 161

5.3 Pitting Corrosion 162

5.4 Carbon Equivalent 165

5.5 Hydrogen-Induced Stress Cracking (HISC) Corrosion 167

5.5.1 HISC and Vulnerable Materials 168

5.5.2 HISC and Stress 168

5.5.3 HISC and Cathodic Protection 168

5.5.4 HISC and DNV Standard 169

Questions and Answers 177

Further Reading 184

6 Noise 185

6.1 Introduction to Sound 185

6.2 Introduction to Noise 186

6.3 Noise in Industrial Valves 189

6.3.1 Mechanical Noise and Vibration 190

6.3.2 Fluid Noise 190

6.3.2.1 Aerodynamic Noise 191

6.3.2.2 Hydrodynamic Noise 191

6.3.3 Noise Control Strategies 191

6.4 Noise Calculations for Pipes and Valves 192

6.4.1 Acoustic Fatigue Analysis 192

6.4.1.1 Sound Power Level Calculations 193

6.4.1.2 Mach Number 198

6.4.2 Noise in Control Valves 203

6.4.2.1 Aerodynamic Noise in Control Valves 203

6.4.2.2 Hydrodynamic Noise in Control Valves 208

6.4.3 Noise in Pressure Safety or Relief Valves 215

6.4.3.1 Calculation of Noise Emission According to ISO 4126-9 216

6.4.3.2 Calculation of Noise Emission According to API 521 218

6.4.3.3 Calculation of Noise Emission According to VDI 2713 221

Questions and Answers 222

Further Reading 231

7 Water Hammering 233

7.1 Introduction 233

7.2 Water Hammering and Pressure Loss in Check Valves 233

7.3 Water Hammering Calculations 243

Questions and Answers 249

Further Reading 256

8 Safety Valves 258

8.1 Introduction 258

8.2 Safety Valve Parts 259

8.3 Safety Valve Design and Operation 259

8.3.1 Design and Operation Parameters 259

8.3.1.1 Overpressure Criteria 277

8.3.2 Principle of Operation 278

8.3.3 Safety Valve Reaction Forces 282

8.3.4 Safety Valve Capacity Conversion 294

Questions and Answers 296

Further Reading 302

9 Safety and Reliability 304

9.1 Introduction 304

9.2 Safety Standards 305

9.3 Risk Analysis 308

9.4 Basic Safety and Reliability Concepts 312

9.4.1 System Incidents and Failures 312

9.4.1.1 Failure Rate 313

9.4.1.2 Repair Rate 317

9.4.1.3 Mean Time to Failure (MTTF) 317

9.4.1.4 Mean Time Between Failure (MTBF) 318

9.4.1.5 Mean Time to Repair and Recovery (MTTR) 319

9.4.1.6 Mean Time to Detection (MTTD) 319

9.4.2 Reliability and Unreliability 319

9.4.3 Availability and Unavailability 331

9.5 Safety Integrity Level (SIL) Calculations 336

9.5.1 SIL 336

9.5.2 Probability of Failure on Demand (PFD) 338

9.5.3 Mean Downtime 339

9.5.4 Diagnostic Coverage 342

9.5.5 Safe Failure Fraction (SFF) 342

9.6 Condition Monitoring (ValveWatch) 347

Questions and Answers 348

Further Reading 354

10 Valve Operation 357

10.1 Introduction 357

10.2 Valve Torque 358

10.3 Stem Design 363

10.3.1 MAST Calculations 363

10.3.2 Buckling Prevention 369

10.3.3 Torsional Deflection Prevention 374

10.3.4 MAST Limitation for Quarter-Turn Cryogenic Valves 376

Questions and Answers 378

Further Reading 384

11 Miscellaneous 385

11.1 Introduction 385

11.2 Joint Efficiency 386

11.2.1 Weld Joint Efficiency 386

11.2.2 Bolted Joint Efficiency 388

11.2.2.1 Bolted Bonnet or Cover Joints 388

11.2.2.2 Bolted Body Joints 392

11.2.3 Threaded Joint Efficiency 394

11.2.3.1 Threaded Bonnet or Cover Joints 394

11.2.3.2 Threaded Body Joints 395

11.3 Stem Sealing 395

 

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