PUBLIC TRANSPORT UNDERGROUND STATION VENTILATION & AIRFLOW INSPECTION CHECKLIST 2026

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--- STATION INTAKE & EXHAUST FAN INSPECTION ---
[ ] Inspection Date
[ ] Station/Fan Unit ID
[ ] Fan Operational Status (Fully Operational, Degraded Performance, Non-Operational/Fault)
[ ] Measured Rotational Speed (RPM)
[ ] Visual Inspection Checklist (No visible blade damage, No excessive vibration detected, No unusual noise/grinding, Motor casing is intact)
[ ] Observation Notes & Defect Details
[ ] Photo Evidence of Fan Blades/Motor
[ ] Inspector Signature

--- VENTILATION SHAFT & DUCTWORK INTEGRITY ---
[ ] Inspection Date
[ ] Shaft/Duct ID or Station Zone
[ ] Ductwork Structural Integrity Status (Intact - No visible damage, Minor Corrosion/Wear Detected, Significant Damage - Requires Repair, Critical Failure - Immediate Action Required)
[ ] Detected Issues (Dust/Debris Accumulation, Rust or Corrosion, Seal/Gasket Failure, Structural Cracks, Obstructions/Blockages)
[ ] Estimated Debris Accumulation (mm)
[ ] Detailed Findings & Observations
[ ] Photographic Evidence of Duct Condition
[ ] Inspector Authorization

--- AIR QUALITY & POLLUTANT MONITORING ---
[ ] Inspection Date
[ ] Station/Zone Identification
[ ] CO2 Concentration Level (ppm)
[ ] Particulate Matter (PM2.5) Concentration (µg/m³)
[ ] Air Quality Status (Normal/Safe, Warning/Threshold Exceeded, Critical/Hazardous)
[ ] Observation Notes & Anomalies
[ ] Sensor Calibration Certificate
[ ] Inspector Authorization

--- AIRFLOW VELOCITY & PRESSURE REGULATION ---
[ ] Inspection Point/Zone ID
[ ] Measured Air Velocity (m/s)
[ ] Measured Pressure Differential (Pa)
[ ] Airflow Consistency Status (Stable, Fluctuating, Below Threshold, Critical Failure)
[ ] Anomalies or Turbulence Observations
[ ] Date of Measurement
[ ] Inspector Verification

--- EMERGENCY VENTILATION & SMOKE CONTROL SYSTEMS ---
[ ] Smoke Extraction Fan Operational Status (Fully Operational, Partial Failure, System Offline, Maintenance Required)
[ ] Emergency Mode Verification Checklist (Smoke Dampers Fully Open, Fire Door Integration Active, Emergency Power Supply Engaged, Alarm Triggered Ventilation Sequence)
[ ] Response Time (Seconds)
[ ] Observed Anomalies or Failures
[ ] System Test Log/Video Evidence
[ ] Inspector Verification

--- SENSORS & AUTOMATION CONTROL SYSTEMS (SCADA) ---
[ ] Last Sensor Calibration Date
[ ] SCADA System Operational Status (Fully Functional, Partial Functionality (Degraded), Critical Failure, Maintenance Mode)
[ ] Current Airflow Sensor Deviation Percentage
[ ] Automated Alarms Verified (Temperature Alert, Smoke Detection Alert, Airflow Obstruction Alert, Power Loss Alert)
[ ] Sensor Anomalies or Error Logs
[ ] Calibration Certificate Upload
[ ] System Technician Verification

--- STRUCTURAL ENCLOSURE & LEAKAGE ASSESSMENT ---
[ ] Wall & Ceiling Seal Integrity Status (Intact, Degraded/Cracked, Significant Leakage Detected, Requires Immediate Repair)
[ ] Observed Air Leakage Rate (m³/h)
[ ] Identified Leakage Points (Door Frame Gaps, Ventilation Grille Perimeters, Structural Joint Crevices, Cable Penetration Points, Ceiling Panel Seams)
[ ] Detailed Findings & Leakage Description
[ ] Photographic Evidence of Structural Defects
[ ] Inspector Verification

--- ELECTRICAL & POWER SUPPLY REDUNDANCY ---
[ ] Last Emergency Generator Test Date
[ ] Backup Power Source Status (Operational, Degraded Performance, Non-Operational, Maintenance Required)
[ ] UPS Battery Voltage Reading
[ ] Inspected Components (Uninterruptible Power Supply (UPS), Emergency Backup Generator, Automatic Transfer Switch (ATS), Station Auxiliary Power Panel)
[ ] Observations of Electrical Anomalies
[ ] Electrical Load Test Report
[ ] Lead Electrical Engineer Verification

--- MAINTENANCE LOG & COMPLIANCE DOCUMENTATION ---
[ ] Last Inspection Date
[ ] Compliance Status (Compliant, Non-Compliant, Requires Immediate Action)
[ ] Summary of Findings & Observations
[ ] Supporting Maintenance Certificates/Reports
[ ] Inspector Digital Signature

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