Glossary

O

• O
• Obturator
• Octave Bands
• On-Stream
• On-Stream Examination
• Operating Procedure
• Operations Authority
• Operator
• Operator Response Time
• Out of Commission
• Out of Service
• Overall Time Lag
• Overpressure (with respect to Safety Valves)
• Override, Bypass, Inhibit
• Owner
• Oxidising Chemical