TRAIN SIGNALING SYSTEM MAINTENANCE & INSPECTION CHECKLIST

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--- TRACK CIRCUIT INTEGRITY ---
[ ] Track Resistance (Ohms)
[ ] Voltage Drop (Volts)
[ ] Track Circuit Condition (Nominal, Slightly High, High, Open)
[ ] Time of Test
[ ] Observations/Notes
[ ] Date of Test

--- SIGNAL ASPECT VERIFICATION ---
[ ] Aspect Intensity (Lumens)
[ ] Aspect Color Accuracy (Correct, Slight Deviation, Significant Deviation)
[ ] Aspect Sequence Correctness (Yes, No)
[ ] Last Aspect Calibration Date
[ ] Time of Inspection
[ ] Signal Voltage (Volts)
[ ] Aspect Clarity (Excellent, Good, Fair, Poor)

--- BLOCK EQUIPMENT FUNCTIONALITY ---
[ ] Interlocking Sequence Count
[ ] Block Status - Normal Operation? (Yes, No, N/A)
[ ] Last Block Equipment Reset Time
[ ] Detailed Observation Notes (e.g., unusual behavior)
[ ] Track Occupancy Sensor Reading
[ ] Train Detection System Functional? (Yes, No, Partial)
[ ] Date of last comprehensive test

--- RELAY AND LOGIC TESTING ---
[ ] Relay Contact Resistance (Ohms)
[ ] Logic Circuit Supply Voltage (V)
[ ] Relay Operation (Pass/Fail) (Pass, Fail)
[ ] Detailed Observations/Notes
[ ] Logic Circuit Function (Pass/Fail) (Pass, Fail)
[ ] Date of Logic Circuit Test
[ ] Time of Logic Circuit Test
[ ] Logic Circuit Voltage Drop (mV)

--- SIGNAL CABLE INSPECTION ---
[ ] Cable Length (meters)
[ ] Cable Type (Coaxial, Fiber Optic, Multi-Pair, Other)
[ ] Cable Insulation Condition (Excellent, Good, Fair, Poor)
[ ] Detailed Description of Cable Condition
[ ] Upload Cable Inspection Photos
[ ] Number of Corrosion Points
[ ] Cable Location Coordinates

--- FIBER OPTIC CABLE TESTING ---
[ ] Attenuation (dB)
[ ] Loss on Connector (dB)
[ ] Reflectance (%)
[ ] Insertion Loss (dB)
[ ] OTDR Pass/Fail (Pass, Fail)
[ ] Test Date
[ ] Test Time
[ ] Observations/Comments

--- POWER SUPPLY VERIFICATION ---
[ ] Input Voltage (VAC)
[ ] Input Current (Amps)
[ ] Output Voltage (VAC)
[ ] Output Current (Amps)
[ ] Power Supply Status (Nominal, Slightly High, Slightly Low, Abnormal)
[ ] Last Power Supply Replacement Date
[ ] Time of Power Supply Test

--- EMERGENCY POWER SYSTEM TEST ---
[ ] Test Start Time
[ ] Voltage During Test (V)
[ ] Frequency During Test (Hz)
[ ] Automatic Transfer Switch (ATS) Function (Transferred Successfully, Partial Transfer, Failed Transfer)
[ ] UPS Status (Online, Switching, Bypass, Fault)
[ ] Last UPS Maintenance Date
[ ] Any unusual observations during test?
[ ] Test End Time

--- SYSTEM SOFTWARE & FIRMWARE UPDATE VERIFICATION ---
[ ] Update Installation Date
[ ] Software Version Before Update
[ ] Software Version After Update
[ ] Detailed Update Notes (Release Notes Summary)
[ ] Update Method (e.g., Remote, Manual) (Remote, Manual)
[ ] Update Status (Successful, Failed, Partial)
[ ] Log File (if applicable)
[ ] Any Error Messages/Observations during Update

--- RECORD KEEPING & DOCUMENTATION ---
[ ] Date of Inspection
[ ] Start Time of Inspection
[ ] Equipment Serial Number(s)
[ ] Detailed Observations & Comments
[ ] Inspection Result (Pass, Fail, Conditional Pass)
[ ] Supporting Documentation (e.g., photos, diagrams)
[ ] Inspector's Name
[ ] Inspector's Signature

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