Employers must complete a compilation of written process safety
information before conducting any process hazard analysis required
by the standard. The compilation of written process safety information,
completed under the same schedule required for process hazard
analyses, will help the employer and the employees involved in
operating the process to identify and understand the hazards posed
by those processes involving highly hazardous chemicals. Process
safety information must include information on the hazards of the
highly hazardous chemicals used or produced by the process, information
on the technology of the process, and information on the
equipment in the process.