Recent Blog Posts

PSI Explained: Maximum Intended Inventory

April 4th, 2017

One often discussed requirements within PSI, is the documentation concerning Maximum Intended Inventory. The meaning of maximum intended inventory is exactly what the words imply – the maximum chemical inventory that a facility intends to utilize (have onsite) at any time. For a transient process in which a chemical is consumed, this often corresponds to […]

PSI Explained: Process Chemistry

March 20th, 2017

The information pertaining to the technology in the process must also include a description of any chemistry involved in the process. For processes which manufacture chemicals this is particularly important since the chemical reactions are the basis for the existence of the process. Process chemistry is trivial for processes in which a chemical is merely […]

PSI Explained: Block Flow and Process Flow Diagrams

March 7th, 2017

In order to adequately explain the technology of a chemical process a Block Flow Diagram (BFD) or simplified Process Flow Diagram (PFD) must be prepared. Ideally the BFD/PFD will fit on a single sheet of paper and clearly outline the “flow” of the chemical throughout the process. For a closed-loop process such as an ammonia […]

PSI Explained: Hazards of the Process

February 21st, 2017

Process Safety Information (PSI) is the foundation of any good Process Safety Management (PSM) program. The technical documentation that is gathered during the development of PSI is critical to every other program element. Without PSI… A PHA will lack technical substance Equipment-specific employee training cannot not occur Maintenance procedures consistent with manufacturer’s recommendations cannot be […]

Contractor Training

February 7th, 2017

Recently I was involved in a CalOSHA PSM inspection where CalOSHA requested that the facility provide “contractor training records related to any and all work done on the ammonia process done by contractors”.  The response from the facility was: “Who is responsible to train contract employees who perform work at my facility?”  This is a great […]