PSE provides Professional Engineering consulting services including Automation and Process Safety Engineering for the Chemical, Pharmaceutical, Petrochem and Oil & Gas industries. Automation Engineering including instrumentation specifications, control system design, bus communications and hazardous location solutions. OSHA Nationally Recognized Testing Laboratory (NRTL) support including assessment, auditing and labeling facilitation.  Process Safety Engineering including OSHA PSM compliance, PHA, LOPA and Safety Instrumented Systems. SIS lifecycle management including verification, validation and functional safety assessment and auditing.