Advanced Emergency Relief System Design
OSHA has recognized Design Institute for Emergency Relief System (DIERS) methods as good engineering practice for process safety management of highly hazardous materials. If you’re responsible for the safe handling of the effluent from relief systems, this advanced course will teach you how to apply the DIERS techniques for providing adequate pressure relief for runaway reactions and other pressure-producing events. If you are just starting out, take the basic course on the topic (CH172).
Applying DIERS Technology in Your Facility
This course covers the Design Institute for Emergency Relief Systems (DIERS) techniques for providing adequate pressure relief for runaway reactions and other pressure-producing events that result in two-phase flow. The concepts of DIERS liquid vapor disengagement technology, two phase vapor liquid flow through relief systems, techniques for reactive relief design, and handling of effluent flow are presented.
Each participant receives the texts: Emergency Relief Systems Design Using DIERS Technology (published by AIChE), and Guidelines for Pressure Relief and Effluent Handling Systems (published by CCPS and includes SC Lite computer code license).
Learning Outcomes:
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Discuss elements of emergency relief system design with an emphasis on DIERS methodology.
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Describe design practices in emergency pressure relief and effluent containment in compliance with established codes.
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Employ DIERS technology for data acquisition and two-phase venting calculations.
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Research and learn how to Test computational models and computer programs as well as the effects in real-world scenarios.
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Discuss the complex field and some of the many steps in becoming an ERS engineer.
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Evaluate resources and references that guide further development of ERS engineers.
Who Should Attend: (Please note prerequisites below)
Engineers responsible for operating, designing or managing chemical processes that require emergency overpressure relief devices to ensure the safety of the facility in the event of runaway reactions or other pressure-producing events. Engineers who want to learn more about state-of-the-art venting and flow technology or those responsible for the safe handling of the effluent from an emergency relief device will find this course invaluable.
Prerequisites
The course assumes that the attendees have thorough understanding and real-world experience working with the basic chemical engineering principles of reaction kinetics, fluid flow, thermodynamics, heat transfer, mass transfer, and heat and material balances. Further, some application of these disciplines in basic emergency relief system design or evaluation is expected.
The 5-day virtual class typically starts at 9:30 am EST and ends 2:30 pm EST. Students should login to the Webex training center 15 minutes before classes start. There will be a half hour lunch break around 12 and short breaks incorporated during class.
The 3-day face-to-face classes typically start at 8:00 am and end at 5:30 pm on days one and two with a one-hour lunch break at noon. The day three class ends at 3:00 pm.
Introduction to Advanced Emergency Relief System (ERS) Design
- DIERS/DIERS Users Group
- Case Histories
- Emergency Relief Requirements -Goals & Strategy
- Physical Properties/Material and Energy Balances
- Impact of Two-Phase Venting
- Codes, Terms, Devices and Rules
Vessel Dynamics – 1
- Introduction to Two-Phase Flow Onset/Disengagement
- Coupling Equation and Vapor/Liquid Disengagement Models
Vessel Dynamics – 2
- Experimental Verification
- Prediction of Two-Phase Flow Onset/Disengagement
Vent Flow Dynamics - 1
- Fundamentals, Terminology, Nomenclature
- Critical Flow Phenomena
- Ideal Flow Models for Nozzles
Vent Flow Dynamics - 2
- Fundamentals - Ideal Flow Models for Pipes
- Code-Compliant Design
- Computations using provided programs
Simplified ERS Design Methods - 1
- Introduction
- Experimental Data Acquisition
- Direct Scaling
Simplified ERS Design Methods - 2
- Analytical Methods
- Example Problem
Computerized ERS Design Methods
- Computer Programs
- SUPERCHEMS for DIERS Computer Program
ERS Effluent Handling
The 5-day virtual class typically starts at 9:30 am EST and ends 2:30 pm EST. Students should login to the Webex training center 15 minutes before classes start. There will be a half hour lunch break around 12 and short breaks incorporated during class.
The 3-day face-to-face classes typically start at 8:00 am and end at 5:30 pm on days one and two with a one-hour lunch break at noon. The day three class ends at 3:00 pm.
Introduction to Advanced Emergency Relief System (ERS) Design
- DIERS/DIERS Users Group
- Case Histories
- Emergency Relief Requirements -Goals & Strategy
- Physical Properties/Material and Energy Balances
- Impact of Two-Phase Venting
- Codes, Terms, Devices and Rules
Vessel Dynamics – 1
- Introduction to Two-Phase Flow Onset/Disengagement
- Coupling Equation and Vapor/Liquid Disengagement Models
Vessel Dynamics – 2
- Experimental Verification
- Prediction of Two-Phase Flow Onset/Disengagement
Vent Flow Dynamics - 1
- Fundamentals, Terminology, Nomenclature
- Critical Flow Phenomena
- Ideal Flow Models for Nozzles
Vent Flow Dynamics - 2
- Fundamentals - Ideal Flow Models for Pipes
- Code-Compliant Design
- Computations using provided programs
Simplified ERS Design Methods - 1
- Introduction
- Experimental Data Acquisition
- Direct Scaling
Simplified ERS Design Methods - 2
- Analytical Methods
- Example Problem
Computerized ERS Design Methods
- Computer Programs
- SUPERCHEMS for DIERS Computer Program
ERS Effluent Handling
Outline
The 5-day virtual class typically starts at 9:30 am EST and ends 2:30 pm EST. Students should login to the Webex training center 15 minutes before classes start. There will be a half hour lunch break around 12 and short breaks incorporated during class.
The 3-day face-to-face classes typically start at 8:00 am and end at 5:30 pm on days one and two with a one-hour lunch break at noon. The day three class ends at 3:00 pm.
Introduction to Advanced Emergency Relief System (ERS) Design
- DIERS/DIERS Users Group
- Case Histories
- Emergency Relief Requirements -Goals & Strategy
- Physical Properties/Material and Energy Balances
- Impact of Two-Phase Venting
- Codes, Terms, Devices and Rules
Vessel Dynamics – 1
- Introduction to Two-Phase Flow Onset/Disengagement
- Coupling Equation and Vapor/Liquid Disengagement Models
Vessel Dynamics – 2
- Experimental Verification
- Prediction of Two-Phase Flow Onset/Disengagement
Vent Flow Dynamics - 1
- Fundamentals, Terminology, Nomenclature
- Critical Flow Phenomena
- Ideal Flow Models for Nozzles
Vent Flow Dynamics - 2
- Fundamentals - Ideal Flow Models for Pipes
- Code-Compliant Design
- Computations using provided programs
Simplified ERS Design Methods - 1
- Introduction
- Experimental Data Acquisition
- Direct Scaling
Simplified ERS Design Methods - 2
- Analytical Methods
- Example Problem
Computerized ERS Design Methods
- Computer Programs
- SUPERCHEMS for DIERS Computer Program
ERS Effluent Handling
A laptop is required for this course.
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