Modular OT Commissioning and Validation Checklist

Architectural and Envelope OT Handover Checklist

Before conducting specialized air tests, inspect the envelope of the operating room thoroughly. Prefabricated wall and ceiling panels must be perfectly flush, plumb, and sealed with anti-fungal, non-outgassing silicone sealant. Even microscopic gaps behind pendant brackets or around peripheral cutouts will compromise pressure zoning and accumulate bio-burden over time. Verify that the floor coving transitions seamlessly without air pockets underneath the conductive or dissipative flooring. Doors must feature functional vision panels, drop seals, and reliable interlock mechanisms that prevent both doors of an airlock from opening simultaneously.

• Seamless anti-microbial wall joints with zero visible voids or cracked sealant
• Flush ceiling integration around surgical lights, laminar canopies, and return grilles
• Continuous 100 mm wall-to-floor coving with fully grounded conductive or dissipative vinyl
• Hermetic or drop-seal sliding doors operating smoothly with touchless sensors and functional interlocks

HVAC and Laminar Airflow Verification List

The air handling system is the heart of surgical infection control. Your laminar airflow verification list must begin with validating static pressure, total air volume, and velocity directly underneath the diffuser canopy. Air velocity must remain uniform across the operational grid, typically measured at multiple points across the face. Confirm that positive pressure cascades correctly, moving outward from the operating zone to the sterile corridor and subsequently to scrub or utility bays. Inadequate pressure gradients invite cross-contamination whenever theatre doors open during procedures.

• Terminal air velocity verification across the full surface of the supply plenum
• Air change rate calculations matching design criteria for total and outdoor fresh air volumes
• Pressure differential verification using calibrated magnehelic gauges across adjacent clean zones
• Temperature and relative humidity pull-down tests under simulated heat load conditions

Filtration and HEPA Filter Test Checklist

Air filtration performance directly impacts surgical site infection rates and regulatory audits. A thorough HEPA filter test checklist requires physical testing of both the filter media and the mounting frame. Contractors frequently damage delicate glass-fiber media during installation or fail to compress clamping gaskets evenly, allowing unfiltered bypass air to contaminate the sterile core. An independent Dispersed Oil Particulate (DOP) or Polyalphaolefin (PAO) aerosol challenge test must scan the entire filter face and perimeter seals to identify and rectify any leak paths.

• Aerosol challenge testing (PAO/DOP) with leak scanning along all filter media and framing borders
• Differential pressure gauge calibration across pre-filters, micro-vee filters, and terminal HEPA units
• Non-viable particulate count verification under dynamic or simulated operational states
• Airflow pattern visualization (smoke testing) to confirm clean, non-turbulent sweeping action over the table

MGPS and Electrical Commissioning Verification

Medical Gas Pipeline Systems (MGPS) and isolated power supplies demand strict verification prior to sign-off. Gas terminal units mounted on walls or surgical pendants must be tested for cross-connection, correct labeling, mechanical indexing, and dynamic pressure drops under full load. Meanwhile, operating theatre electrical systems should utilize isolated power panels (IT systems) with line isolation monitors to protect patients from micro-shocks. I&D Hospital Solution conducts rigorous on-site validation of both pendant alignments and electrical isolations, preventing hazardous cross-connections or ungrounded equipment connections.

• Gas outlet anti-confusion indexing and leak-rate decay testing across all gas lines
• Dynamic flow pressure checks at terminal outlets during simultaneous multi-terminal usage
• Isolated power supply testing, earthing integrity, and line isolation monitor threshold verification
• Emergency generator transfer time testing ensuring uninterrupted switchover to bypass supplies

Audit Readiness and NABH OT Commissioning Checklist

Closing out a project requires more than mechanical completion; it demands complete statutory and audit documentation. A robust NABH ot commissioning checklist requires as-built mechanical drawings, factory test certificates, filter test reports, and water-tight standard operating procedures. When hospitals attempt to compile these files independently after vendor exit, missing technical manuals and uncertified calibrations cause immediate audit queries and delay theatre licensing. I&D Hospital Solution compiles the entire commissioning dossier, ensuring every calibration certificate, balancing report, and technical document is verified and organized for administrative governance.

• Comprehensive as-built engineering drawings for HVAC ductwork, electrical, and gas distribution
• Calibration certificates from accredited laboratories for all integrated sensors and monitoring gauges
• Documented 3-stage microbiological air and surface swab protocols post-terminal cleaning
• Vendor warranty certificates, preventive maintenance schedules, and equipment operating manuals

Step by step

1. 1

   Perform Civil and Structural Punch-List Inspection

   Inspect wall panels, return air risers, floor coving, doors, and siliconized joints for structural uniformity and leak-free sealing before running active systems.

2. 2

   Balance Air Handling System and Continuous Run-In

   Operate the AHU continuously for a minimum 24-hour stabilization window to purge construction dust before conducting precise air balancing.

3. 3

   Execute HEPA Integrity and Aerosol Leak Tests

   Perform on-site aerosol penetration tests on all terminal HEPA filters to identify frame bypass or filter media pinhole leaks.

4. 4

   Validate Temperature, Humidity, and Pressure Cascades

   Measure and adjust room microclimate parameters alongside static pressure differentials across sterile, scrub, and corridor thresholds.

5. 5

   Audit Medical Gas Outlets and Electrical Systems

   Test gas terminal pressure drops, cross-connection prevention, terminal flow rates, isolated power supplies, and surgical pendant articulation.

6. 6

   Conduct Particle Counts and Environmental Air Sampling

   Record non-viable airborne particulate counts across designated grid points followed by baseline microbiological air and surface sampling.

7. 7

   Consolidate Handover Dossier and Sign-Off

   Review vendor balance sheets against completed commissioning certificates, filter test sheets, and as-built engineering documentation.

Frequently asked questions