Table of Contents
iii
Purpose and Disclaimer v
Acknowledgements vii
Chapter 1: Introduction to Yankee Dryer and Tissue Making 1
Historical Background 1Yankee Dryer Definition 2Corporate Yankee Dryer Safety System 9Safety Management System Key Roles 9Safety Monitoring 11Yankee Dryer Audit 12Risk-Based Safety Management 12
Chapter 2: Engineering and Design Guidelines 13Documentation and Records 13Maximum Allowable Working Pressure 15Head Insulation 16Sensitive Designs 18Interlocks 21
Chapter 3: Inspection Guidelines 25Inspection Guideline Principles 25Inspection Practices 26Nondestructive Examinations 29Routine Periodic Inspections 38Statutory Inspections 49Nonroutine Inspections 50Fitness-for-Service Inspections 51Inspection Monitoring 54
Chapter 4: Operating and Reliability Guidelines 59Operating Limitations 59Warmup 60Cooldown 64Protective Devices 65Dryer Protection from Water Stream and Sprays 66Derating 66Boiler Water Chemistry 68
Table of Contents
Chapter 5: Maintenance and Repair Guidelines 73Repairs and Alterations 73Shell Surface Defect Repair 73Stress Corrosion and Cracking 73Leakage Repairs 74Structural Bolt Tensioning 76Steam Safety Relief Valves 76
Chapter 6: Personnel Protection 79Dryer Entry and Rescue 79Storage 79
Index 81
iv
Recommended
