This module reviews background material that provides the foundation for development of ANSI/IIAR 9-2020; key definitions; ITM; documentation; and the standard's purpose, scope and applicability to maintaining the safe operation of existing closed-circuit ammonia refrigeration systems.

The second training module in the IIAR 6 Certificate Course begins with a look at allowable inside and outdoor locations for ammonia equipment. We’ll also address general system safety requirements including system temperature and pressure, oil management, insulation, service provisions, emergency shutdown documentation and equipment enclosures. Module 2 finishes up with a review of general machinery room requirements such as construction, access and egress, piping and drains, emergency control switches, ventilation, and ammonia detection and alarms.

Module 3 starts off with an examination of general equipment safety requirements for pressure relief, hydrostatic overpressure protection, allowable locations for refrigerant piping, and instrumentation and controls. We’ll then review Chapter 8, which lays out the requirements for performing a system safety evaluation. The course concludes with a look at the informative IIAR 9 appendices, with a focus on documentation, suggested machinery room signage, and a report from a sample system safety evaluation.