Iiar Ammonia Refrigeration Piping Handbook Pdf Link -

A: Possibly, but not for a new installation requiring a permit. Most AHJs (Authorities Having Jurisdiction) require the current edition (2021 as of this writing). The 2008 edition lacks requirements for secondary containment and updated seismic bracing.

For occasional reference, consider borrowing a licensed copy from a colleague or using the free resources from ASHRAE and your local OSHA consultation office. iiar ammonia refrigeration piping handbook pdf link

– Mandates qualified welders following ASME Section IX. Includes required post-weld heat treatment for thick-walled pipes. A: Possibly, but not for a new installation

– Lists acceptable pipe materials (e.g., ASTM A53 Grade B, seamless only above 6 inches). Forbids copper, brass, or galvanized steel due to corrosion. ASTM A53 Grade B