1. OSHA Process Safety Management of Highly Hazardous Chemicals CFR 1910.119
2. ANSI/API Recommended Practice 754: Process Safety Performance Indicators for the Refining and Petrochemical Industries 2nd ed. Amer. Petrol. Inst. Washington D.C.; 2016.
3. Know Your Limits
4. AICHEprocess safety glossary.https://www.aiche.org/ccps/resources/glossary/process-safety-glossary/safe-operating-limits(accessed January 15 2019).