CO2-2021 Standard Certificate Course 

After participating in the Module 1 activity, the learner will be able to:

• Decide if the ANSI/IIAR CO2 Standard should be applied to a project.
• Use the ANSI/IIAR CO2 Standard to guide the design of a safe and efficient closed-circuit refrigeration system that incorporates CO2 as a refrigerant.
• Understand and apply the minimum requirements for design of a safe refrigeration system.
• Understand that safety is focused on persons and property located at or near the premises where refrigeration systems are located.
• Discuss the benefits of safe system design, including energy usage, maintenance, liability reduction, and reduction of exposure to federal penalties.

After participating in the Module 2 activity, the learner will be able to:

• Understand the requirements of potential locations for a closed-circuit CO2 refrigeration system.
• Understand the requirements for multiple refrigerants in the same room.
• Review and apply systems to different occupancies.
• Understand CO2 as a refrigerant and secondary fluid.
• Review CO2 specifications.
• Define and apply system design pressure.

After participating in the Module 3 activity, the learner will be able to:

• Understand the requirements behind machinery room construction.
• Understand the ventilation requirements when using a machinery room.
• Understand the requirements for piping and equipment supports in and out of a machinery room.
• Understand the requirements for leak detection in and out of a machinery room.
• Understand signage requirements.

After participating in the Module 4 activity, the learner will be able to:

• Know the three major types of CO2 systems.
• Understand the differences and application of each system.
• Understand the requirements for piping of each carbon dioxide system.
• Understand the Mollier diagram and how these CO2 systems are plotted on the diagram.
• Understand the major components of these systems, including compressors, condensers, gas coolers, evaporators, pumps, and pressure vessels.
• Understand the design pressures for each system type.

After participating in the Module 5 activity, the learner will be able to:

• Understand the different valves used in a closed-circuit carbon dioxide refrigeration system, their function, and applicability.
• Review design validation requirements for valves used in closed-circuit carbon dioxide refrigeration systems.
• Understand the different types of pressure relief devices.
• Understand the design and applicability of pressure relief devices.
• Understand the piping requirements when applying pressure relief devices.

After participating in the Module 6 activity, the learner will be able to:

• Understand closed-circuit carbon dioxide refrigeration system instrumentation and controls requirements.
• Understand refrigerant detection and alarm requirements.
• Understand installation supervision requirements.
• Understand required installation equipment.
• Understand the requirements for insulating pipe, valves, and components of a closed-circuit carbon dioxide refrigeration system.

After participating in the Module 7 activity, the learner will be able to:

• Understand the requirements for installation of a closed-circuit carbon dioxide refrigeration system.
• Understand required field testing.
• Understand the requirements in ASME B31.5, Section 538 as they relate to system installation.
• Understand the requirements for evacuation and charging a closed-circuit carbon dioxide refrigeration system.
• Understand the requirements for startup of a closed-circuit carbon dioxide refrigeration system.

After participating in the Module 8 activity, the learner will be able to:

• Understand inspection, testing, and maintenance program requirements, including:
• ITM requirements for each major component.
• ITM requirements for safety systems.
• ITM requirements related to documentation.

After participating in the Module 9 activity, the learner will be able to understand the informative appendices, including:

• Appendix A – Explanatory Material
• Appendix B – Carbon Dioxide Concentration Levels and Expected Effects on Human Health
• Appendix C – Avoiding Component Failure in Refrigeration Systems Caused by Abnormal Pressure or Shock
• Appendix D – Risk-based Inspection Testing and Maintenance
• Appendix E – References and Sources of References