Most anhydrous ammonia refrigeration operations are subject to the Accidental Release Prevention requirements in Section 112(r) of the Clean Air Act Amendments of 1990. These rules require facilities to prepare a Risk Management Plan (RMP) which includes details on programs and procedures the facility has in place to prevent the accidental release of anhydrous ammonia.

Sign with hazardous classification for Anhydrous Ammonia storage

Anhydrous Ammonia Hazard Label


One of the required elements of all RMP programs is to conduct a compliance audit of the operation at least every three years (40 CFR 68.79). Reports of the audits must be prepared and the facility must retain the two most recent audit reports.

Caltha LLP provides certified compliance auditors knowledgeable on the requirements of 40 CFR 68 as they apply to ammonia refrigeration operations. Caltha auditors are also familiar with the International Institute of Ammonia Refrigeration (IIAR) Ammonia Refrigerant Management (ARM) guidelines which are the basis for the RMP program. (ANSI/IIAR Standard – 2013).

Click here to review example of past Caltha compliance and management system audit projects. To request a quote for compliance auditing services, contact Caltha LLP at or go to Caltha contact page.


Caltha LLP | Your EH&S Compliance, Auditing and EMS/SMS Partner

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