Includes guidelines for Fluid Catalytic Cracking Unit (FCCU) slide valves and vapor depressurizing systems. Critical Sections of the Document
The API 553 standard addresses a wide range of refinery-specific valve needs: api 553 pdf
The 2nd Edition, published in October 2012, is the current active version. Includes guidelines for Fluid Catalytic Cracking Unit (FCCU)
Guidance on EBVs for containing flammables and toxic materials, including requirements for fail-safe positions (usually "fail-close"). published in October 2012