Operational Qualification
Operational Qualification documents that equipment or a system operates as intended throughout specified operating ranges and controls.
What this term means in maintenance
Operational Qualification documents that equipment or a system operates as intended throughout specified operating ranges and controls.
What OQ may test
Testing may include:
- Controls
- Operating ranges
- Alarms
- Interlocks
- Sequences
- Setpoints
- Failure response
- Safety functions
- Data recording
- User access
Practical example
A temperature-controlled system is tested across its approved operating range, alarms, shutdowns, and recovery conditions.
Protocol
OQ should use approved test steps, acceptance criteria, evidence, deviations, and approval.
OQ versus PQ
OQ confirms controlled operation.
PQ confirms consistent performance in the intended process or use.
Common mistake
Testing only normal operation can miss alarm, limit, failure, and recovery behavior.
How this term differs
Operational Qualification is documented confirmation that controls and operating ranges function as intended. It is related to Performance Qualification, Installation Qualification, and Commissioning, but these terms describe different records, measures, roles, strategies, or decisions and should not be used interchangeably.
Related concepts
Related maintenance terms
Keep exploring connected CMMS, reliability, and maintenance planning terms.
Installation Qualification
Installation Qualification documents that equipment or a system is installed correctly according to approved design, specification, and manufacturer requirements.
Performance Qualification
Performance Qualification documents that equipment or a system consistently performs effectively under actual or representative operating conditions.
Functional Test
A functional test confirms that equipment, a component, or a protective function performs its required operation under defined test conditions.
Glossary FAQs
- What does OQ stand for?
OQ stands for Operational Qualification.
- What does OQ test?
Controls, ranges, alarms, interlocks, sequences, setpoints, failure response, and records.
- How is OQ different from PQ?
OQ confirms controlled operation; PQ confirms consistent intended performance.