PAN-FSR-2091-055

Fault Description

No fault. This FSR was auto-generated by the preventive-maintenance scheduler when rig VL-3 reached its quarterly calibration due date. The cortical-mesh alignment laser and placement verification system require recertification every 90 days per SOP PAN-ENG-031 (Implant Bay Equipment Calibration). VL-3's previous calibration was completed on 2091-02-22 (PAN-FSR-2091-019).

Root Cause Analysis

Not applicable — scheduled preventive maintenance. No corrective action required.

Work Performed

Dr. K. Okafor attended the Implant Bay on 2091-05-24 at 07:00 local, ahead of the day's provisioning schedule. Work performed under SOP PAN-ENG-031:

1. Alignment laser calibration. The cortical-mesh alignment laser was verified against the primary reference standard (NIST-traceable optical target set OT-H3). Measured alignment deviation: 0.008mm — within the ±0.02mm specification. No adjustment required. Laser power output confirmed at 4.7 mW (specification: 4.5–5.0 mW).

2. Placement verification system. The stereoscopic placement verification cameras were calibrated against the 6-point reference phantom set (PH-VL-6A through PH-VL-6F). Each phantom was placed in the standard orientation and the system's positional output was compared to the reference coordinates. Maximum observed deviation: 0.011mm on phantom PH-VL-6D (Z-axis). All measurements within the ±0.02mm tolerance.

3. System integration test. A full integration test was performed using a Gen-3 Halo cortical-mesh test unit (non-sterile training stock) on phantom PH-VL-6A. The alignment laser, placement verification system, and the rig's mechanical positioning stage were confirmed to operate in concert. End-to-end placement accuracy: 0.009mm deviation from target — within specification.

4. Certification. Calibration certificate PAN-CAL-2091-VL3-Q2 issued. Rig VL-3 re-certified for clinical use. Next calibration due: 2091-08-22.

Parts Consumed

None. All calibration reference standards and phantom sets are non-consumable and remain in the Implant Bay calibration store. The Gen-3 test unit used for integration testing was returned to training stock.

Sign-off Chain

Calibration performed by: Dr. K. Okafor, Biomedical Equipment Specialist — 2091-05-24

Calibration certificate reviewed by: S. Reinhardt, Implant Bay Lead — 2091-05-24

Report closed by: S. Reinhardt — 2091-05-24

Post-Action Notes

All six reference phantoms remain within their own calibration validity periods (annual recertification, last completed 2091-01-10). The NIST-traceable optical target set OT-H3 is due for external recertification in Q4 2091 — the procurement request for the recertification service has been submitted. VL-3 has now completed 8 consecutive quarterly calibrations without requiring corrective adjustment, consistent with the rig's operational stability since the mechanical-stage refurbishment in Q1 2090.