The document outlines a 3-day seminar on relief system design. Day 1 covers an overview of relief system design, setting pressure levels, and overpressure scenario selection. Day 2 focuses on determining relief requirements and selecting pressure relief devices. Day 3 is dedicated to sizing pressure relief valves and relief system piping design considerations. The seminar aims to familiarize participants with key aspects of relief system design, relevant codes, and guidelines for calculating relieving requirements.

1. Page 1
AGENDA
Relief System Design Seminar
Agenda / Course Outline
1st
day
Start: 0800
Morning Break: about 1000-10:15
Lunch: about 1130-1230
Afternoon Break: about 1400-1415 (2 – 2:15 pm)
End: 1630 (4:30 pm)
2nd
day
Start: 0800
Morning Break: about 1000-10:15
Lunch: about 1130-1230
Afternoon Break: about 1400-1415 (2 – 2:15 pm)
End: 1630 (4:30 pm)
3rd
day
Start: 0800
Morning Break: about 1000-10:15
Lunch: about 1130-1230
Afternoon Break: about 1400-1415 (2 – 2:15 pm)
End: 1630 (4:30 pm)

2. Page 2
PRESSURE RELIEF SYSTEM DESIGN SEMINAR
Seminar objectives:
1. Identify and review the most important aspects of relief system design
2. Familiarize relevant code requirements affecting relief system design
3. Evaluate relationship between design, operating, set, and relieving pressures
4. Review and evaluate overpressure scenarios
5. Provide guidelines for calculating relieving requirements
6. Identify appropriate relieving credits
7. Review single phase (gas or liquid) and multi-phase relief discharge pressure
relief valve sizing equations
8. Evaluate inlet and outlet piping design considerations and equations for single and
multiphase flow
• 3-day seminar (participants can attend for specific areas of interest)
• Seminar can be extended to 4 days where more advanced topics and worked examples are
discussed in depth
Instructor: Ed Zamejc
EZ Relief Systems Consulting, Inc.
edzamejc@ezreliefsystems.com
Cell: (832) 373-7445

3. Page 3
RELIEF SYSTEM DESIGN COURSE OUTLINE
Follows Relief System Design Guide (available separately - not
included in seminar)
Day 1
1. OVERVIEW OF RELIEF SYSTEM DESIGN
A. Pressure Relief System Design
B. Types of Pressure Relief Devices
C. Documentation Requirements
D. Industry Loss Experience Related to Pressure Relief
Systems
E. Codes and Standards Related to Pressure Relief Systems
(e.g., OSHA, ASME, API, NFPA)
2. SETTING PRESSURE LEVELS
A. Definitions
B. Pressure Relief Device Set Pressures (Code
Requirements)
C. Allowable Pressures during Relief (Code Requirements)
D. Operating Differentials for Pressure Relief Valves
E. Rupture Disk Pressure Settings
F. Temperature Effects on Opening Pressure
G. Vessel Design Pressure versus MAWP
3. OVERPRESSURE SCENARIO SELECTION
A. Introduction
B. Scenario Selection Guidelines
C. Information Needs
D. Scenario Development Process
E. Common Mode Failures
F. Multiple Contingencies/Likelihood Considerations
G. Analysis of 20 Standard Vessel Overpressure Scenarios
[Applied to Site-Specific Example If Possible]
H. Piping
I. Vacuum Causes
J. Scenarios Where Relief Devices do not Generally
Protect
K. Scenarios Where Relief Devices are not Generally
Designed
L. Car-Seal Open/Chain Lock Open Valves
M. Management of Change
(Note: Part of Section 3 may need to be covered in Day 2)

4. Page 4
Day 2:
(Finish Section 3, as required)
4. RELIEF REQUIREMENT DETERMINATION
A. Information Needs
B. Determining Relief Requirements for 20 Standard
Scenarios - General Considerations, Detailed
Calculations and Emphasis on Site Specific Cases and:
1. Thermal Expansion
2. Pool Fire Exposure
C. Capacity Credits – Allowable and Non-Allowable
D. Alternate Relief Path Credits
E. Single or Multiphase Relief Considerations
5. PRESSURE RELIEF DEVICE SELECTION (OPERATING CHARACTERISTICS)
A. Vents for Low Pressure Service
B. Pressure Relief Valves
1. Spring-Loaded (Conventional and Balanced Bellows)
2. Liquid Certified Valves
3. ASME Section I Steam Valve
4. Pilot-Operated Relief Valves
C. Rupture Disks
D. Rupture Disk/Pressure Relief Valve Combinations
E. Buckling Pins
F. Maintenance aspects (optional)
Day 3:
6. SIZING PRESSURE RELIEF VALVES
A. Origin of Sizing Formulas
B. Single Phase Flow Device Sizing
1. Gas or Vapor Sizing Critical Flow
2. Gas or Vapor Sizing Sub-Critical Flow
3. Non-flashing Liquid Sizing
C. Two-Phase Flow Device Sizing (Omega Method)
1. Two Point Method to Calculate Omega
2. Multiphase Critical Flow Equation
3. Multiphase Sub-Critical Flow Equation
4. Subcooled-Flashing Liquid Sizing
D. Relieving of Fluids above Thermodynamic Critical
Conditions

5. Page 5
7. RELIEF SYSTEM PIPING DESIGN AND CONSIDERATIONS
A. Piping Design General Considerations
B. Sizing Stand-alone Rupture Disk Relief Systems
C. Pressure Relief Valve Inlet Line Sizing
1. Code Requirements
2. Inlet Pressure Drop Equation (all fluid phases)
3. Options for Handling High Inlet Pressure Loss
D. Pressure Relief Valve Outlet Line Sizing
1. Conventional Versus Balanced Bellows Valves
2. Incompressible Liquid Line Sizing
3. Compressible Gas (vapor) Line Sizing
4. Two Phase Fluid Line Sizing (Omega Method)
E. Piping Layout Considerations
1. Isolation Valves in Relief Systems
2. Relief System Piping Arrangements
3. Brittle Fracture Potential
4. Acoustic-Induced and Turbulence-Induced Fatigue
F. Relief Discharge to Atmosphere
1. General Requirements
2. Atmospheric Discharge of Non-Hazardous Materials
3. Flammable and Toxic Discharge from Atmospheric
Vents
4. Dispersion and Consequence Modeling
8. REACTIVE SYSTEMS
Very brief general discussion
9. RELIEF HEADERS, NETWORKS, AND EFFLUENT HANDLING
A. Scenarios
B. Methodology
C. Knock-out Drums
D. Flare Stacks
1. General Guidelines
2. Thermal Radiation
3. Purging
E. General Discharge Location Considerations
F. Flare Gas Recovery