Equipment Qualification Lifecycle: URS, DQ, IQ, OQ, and PQ Validation
Qualifying facility machinery ensures consistent output within GMP specs throughout its operation lifecycle. From large compounding tanks and clean steam generators to analytical balances in QC, every piece of GMP equipment must be qualified. In this guide, we review the complete equipment validation lifecycle, detailing the documentation required at each stage.
Drafting the User Requirement Specification (URS)
The qualification process starts with the URS, which defines the operational, safety, and compliance parameters of the machine. The URS should state the physical capacity, automation level, materials of construction (e.g. 316L stainless steel), and regulatory expectations (e.g. 21 CFR Part 11 software controls). The URS acts as the reference document for the entire validation project.
Design Qualification (DQ) and Installation Qualification (IQ)
The **Design Qualification (DQ)** phase verifies that the manufacturer's design matches the parameters defined in the URS. Once the design is approved, the equipment is purchased, built, and shipped to the facility.
The **Installation Qualification (IQ)** phase verifies that the physical machine is installed correctly in the plant. The validation team checks and logs that electrical connections match schematics, instruments are calibrated, and components (such as valves, filters, and pipes) are installed in accordance with specifications.
Operational (OQ) and Performance (PQ) Qualifications
The **Operational Qualification (OQ)** phase verifies that the machine runs correctly across its defined operating ranges. This includes testing alarm systems, safety switches, temperature controls, and software configurations.
Finally, the **Performance Qualification (PQ)** phase confirms that the equipment performs reliably under actual production loads. This involves running mock batches using inert materials or placebos to verify that quality outputs remain consistent. Following the successful completion of PQ, the validation report is signed off, and the equipment is officially released for commercial production.
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