1. Process Safety Management OSHA 3132 2000 (Reprinted) https://www.osha.gov/Publications/osha3132.html(accessed January 8 2018).
2. API. API RP 754 Process Safety Performance Indicators for the Refining and Petrochemical Industries. ANSI/API Recommended Practice 754 second edition April 2016.
3. CCPS. Guidelines for Risk Based Process Safety. Center for Chemical Process Safety American Institute of Chemical Engineers Newark NJ 2007.
4. CCPSProcess Safety Glossary https://www.aiche.org/ccps/resources/glossary/process‐ safety‐glossary/safe‐operating‐limits (accessed January 8 2018).
5. CCPS.Inherently Safer Chemical Processes A Life Cycle Approach. Center for Chemical Process Safety American Institute of Chemical Engineers Hoboken NJ 2009.