Bulletin No. 111. Guidelines for Ammonia Machinery Room Ventilation. IIAR Ammonia Refrigeration Library, (1991, October). Major differences can be found between codes when determining ventilation requirements for ammonia machinery rooms. This bulletin cuts through the jargon and provides a practical ventilation design criteria that will satisfy existing code requirements and improve machinery room safety.

TABLE OF CONTENTS

• 1.0, Introduction
• 2.0, Scope
• 3.0, Reference Sources
• 4.0, Summary of Ventilation Requirements
  • 4.1, Non-Hazardous Location
  • 4.2, Minimum Volume Requirements
  • 4.3, Other Requirements
• 5.0, Recommended Design Scheme
  • 5.1, Step 1 - Determine Code Minimums
  • 5.2, Step 2 - Design Process
• 6.0, Operation and Maintenance
• 7.0, Ventilation Design Example
  • 7.1, Machinery Room Specifications
  • 7.2, Design Procedure
  • 7.3, Minimum Ventilation Worksheet
  • 7.4, Ventilation System Illustration
• Appendix A, Minimum Ventilation Worksheet