SF6 Gas Fill and Moisture Dew-Point Check

Pre-shipment inspection for gas-insulated switchgear to record SF6 fill pressure and verify moisture or dew-point readings against specification before release.

Inspection Details

• Equipment identification recorded
  Record the switchgear model, serial number, bay/cell identifier, and shipment lot or work order.
• Inspection date and time recorded
  Capture the date and time the SF6 fill and moisture/dew-point check was completed.
• Inspector name and qualification recorded
  Record the inspector name and confirm the inspection was performed by an authorized or competent person.

SF6 Fill Pressure Verification

• SF6 fill pressure measured
  Record the final SF6 fill pressure for the unit.
• Fill pressure matches specification
  Confirm the measured fill pressure is within the approved engineering specification for this unit.
• Fill valve and fittings show no visible leakage
  Inspect the fill valve, connections, and accessible fittings for visible signs of leakage, damage, or loose connections.

Moisture / Dew-Point Verification

• Moisture or dew-point reading recorded
  Record the measured moisture content or dew-point value for the SF6 gas.
• Moisture or dew-point value meets specification
  Confirm the measured moisture or dew-point value is within the approved limit for shipment.
• Test instrument calibration status verified
  Confirm the moisture or dew-point instrument used for the measurement is within calibration and suitable for trace moisture testing.

Gas Quality and Unit Condition

• SF6 gas quality documentation available
  Verify gas purity or supplier certification is available when required by the work instruction or customer specification.
• Unit shows no visible damage or contamination
  Check the enclosure, gauges, labels, and accessible surfaces for damage, contamination, or abnormal condition.
• All required labels and shipping marks present
  Confirm identification labels, gas warning labels, and shipping marks are present and legible.

Release and Documentation

• Non-conformances documented
  Record any deficiency, non-conformance, or corrective action needed before shipment.
• Unit approved for shipment
  Confirm the switchgear may be released for shipment only after all critical checks pass and required documentation is complete.
• Inspector signature captured
  Inspector signs to confirm the SF6 fill pressure and moisture/dew-point checks were completed and recorded accurately.