#1302 - Relief System Design
Course Objective
Upon completion of this course, attendees will have a comprehensive understanding of sizing, specifying, installing, and maintaining relief systems. The course is divided into three major sections so that individual companies can focus on specific areas if the full course is not required. The stand-alone sections are:
- Process Issues (Design Temperature and Pressure, Basic Pressure Relief System Requirements, Determination of Relief Loads, Storage Tanks)
- Design Issues (Pressure Relief Device Selection, Pressure Relief Device Sizing, Pressure Loss Calculations, Discharge Systems)
- Equipment Issues (Codes, Laws, Standards and Practices, Installation, Documentation, Inspection and Maintenance)
The course content can be tailored to suit the requirements of individual companies.
Who Should Attend?
- Individuals who are inexperienced with the requirements for analyzing and specifying relief systems.
- Individuals who require a detailed discussion of the design of relief systems.
- Individuals who are managing and performing relief system analysis and who require a comprehensive system to achieve consistency of approach.
Course Description
Introduction
- Process Safety Management
- Risk
- Process Safety Management Systems
- Corporate Systems
- Fundamentals
- Function of Relief Systems
- Causes of Overpressure
- Systems Assessment
- Relief Device Service Identification
- Sizing
- Specification
- Safety Review
- Installation
- Documentation, Inspection, Maintenance, Management of Change
- Codes, Laws, Standards and Practices
- ASME Codes (Sections I and VIII)
- Laws (e.g., OSHA 1910)
- Company Standards
- Industry Practices (e.g., API RP 520 and Standard 2000, NFPA 30 and 58, National Board NP-65)
- Design Pressure and Temperature, and Maximum Allowable Working Pressure
- Basic Pressure Relief System Requirements
- ASME Sections I and VIII
- API 2000
- Set Pressure
- Accumulation
- Overpressure
- Blow-down
- Cold Differential Test Pressure
- Interconnected Vessels
- Isolation From Source of Overpressure
- Block Valves
- Pressure Profiles
- Non-ASME Equipment
- Piping
- Vacuum Protection
- Sparing
- Administrative Procedures
- Determination of Relief Loads
- Basis for Calculations
- Causes of Over-Pressure
- Distillation
- Fire Loading
- Liquid-Filled Systems
- Tube Rupture
- Mechanical Equipment
- Storage Tanks
- Types of Tanks
- Design Codes and Standards
- Over-Pressure Protection
- Tank Design Standards
- Vacuum Design
- Frangible Roof Design
- Tank Venting Requirements
- Selection of Venting and Pressure Relief Devices
- Installation of Venting Devices
- Pressure Relief Device Selection
- Pressure Relief Devices
- Conventional Spring-Opposed Relief Valves
- Balanced Spring-Opposed Pressure Relief Valves
- Liquid Trim Relief Valves
- Accessories
- Pilot Operated Pressure Relief Devices
- Rupture Discs
- Concerns
- Pressure Relief Valve/Rupture Disc Combinations
- Other Types of Pressure Relief Device
- Pressure Relief Device Sizing
- ASME, API, and Manufacturer's Equations
- Multiple-Phase/Flashing Flow Service
- Pilot Operated Pressure Relief Valves
- Safety Valves
- Sizing Procedures
- Orifice Selection
- Existing Valve Evaluation
- Rupture Disc Sizing
- Physical Specification
- Installation
- General
- Inlet Piping
- Outlet Piping
- Pilot Operated Pressure Relief Valves
- Rupture Discs
- Flare Headers
- Associated Equipment
- Pressure Loss Calculations
- Types of Service
- Sizing Basis
- Piping Resistance Factors
- Discharge Systems
- Disposal Options
- Hazard and Risk Assessment
- Environmental Factors
- Vapor Release Criteria
- Liquid Release Criteria
- Disposal into a Process
- Closed Disposal Systems
- Design Considerations
- Documentation
- Relief Load Analysis and Calculations
- Pressure Relief Device Specifications
- Pressure Relief Device Installation Details
- Reference Drawings and Data
- Engineering File Maintenance
- Operating Procedures and Limitations
- Inspection and Maintenance Records
- Inspection
- Inspection Intervals
- Inspection Items
- Testing
- Installation Inspection
- Locked Block Valves
- Rupture Disc Inspection
- Records
- Maintenance
- General Responsibilities
- National Board VR Program
- Training and QC
- Test Stands
- Maintenance Practices
- Design Tools - Spreadsheets
- Manufacturer-Supplied Sizing Programs
- Compressible Flow Calculations
- Equivalent Length Calculations for Fittings in Piping Systems
- Venting Calculations for Tanks
- Supercritical Fluid Calculations
- Two-Phase Calculations
Supplementary Workshops
- Typical Distillation Column Relief Load Calculation - 1
- Typical Distillation Column Relief Load Calculation - 2
- Heat Exchanger Tube Rupture
- Thermal Relief (Liquid/Vapor/Supercritical)
- Thermal Relief - Short-Cut
Course Duration – Base course, 3 days (4 days with workshops)
