Bulletin No. 109. Guidelines for IIAR Minimum Safety Criteria for a Safe Ammonia Refrigeration System. IIAR Ammonia Refrigeration Library, (1997, October). Embraces an IIAR goal of ensuring that ammonia refrigeration systems are engineered, constructed and operated in a safe manner. Provides detailed lists of items to consider when designing, inspecting, or operating a system. Housekeeping, recordkeeping, code considerations and personnel safety equipment are some of the safety issues addressed. Also provides inspection checklist forms for compressors, condensers, evaporators, vessels and heat exchangers to check system installation against recognized industry safety requirements.

TABLE OF CONTENTS

• 1. Purpose
• 2. Scope
• 3. Definitions
• 4. Safety Criteria
  • 4.1, Compressors
  • 4.2, Evaporative Condensers
  • 4.3, Shell and Tube Heat Exchangers and Pressure Vessels
  • 4.4, Forced Air Evaporators
  • 4.5, Refrigerant Pumps
  • 4.6, Visual Liquid Level Indicators
  • 4.7, Piping System
  • 4.8, Ammonia Machinery Room Ventilation System
  • 4.9, Pressure-Relief Devices
  • 4.10, General Ammonia Refrigeration System Safety Requirements
• 5. Frequency of Safety Inspections
• 6. Titles and Sources of References
• 7. Inspection Checklists