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Run: Geothermal Loop Purge and Antifreeze Commissioning Inspection

Use this geothermal loop purge and antifreeze commissioning inspection to verify flushing, concentration, pressure hold, and final loop readiness before the ...

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Inspection Details

Project / site name

Loop system identifier

Identify the ground loop, header, or manifold being inspected.

Inspection date and time critical (required)

Inspector name and company critical (required)

Commissioning phase

Circuit Purge and Flushing Verification

All circuits purged individually or in verified groups critical (required)

Yes No N/A

Minimum flushing velocity achieved for each circuit critical (required)

Record the measured flushing velocity for the slowest circuit and confirm it meets the project specification or manufacturer requirement.

Number of circuits verified

Air removed from loop critical (required)

Yes No N/A

Debris collected during purge

Describe visible debris, sediment, pipe shavings, or other contaminants removed from the loop.

Strainer or filter cleaned during purge critical (required)

Yes No N/A

Antifreeze Mix Verification

Antifreeze type critical (required)

Note (optional)

Measured antifreeze concentration critical (required)

Enter the measured concentration by refractometer, hydrometer, or approved test method.

Freeze protection verified against design minimum temperature critical (required)

Yes No N/A

Antifreeze solution mixed uniformly critical (required)

Yes No N/A

Test method used for concentration

Pressure, Flow, and Leak Check

Loop pressure at completion critical (required)

Record the final stabilized loop pressure after purge and fill.

Pressure test held for required duration critical (required)

Yes No N/A

No visible leaks at piping, fittings, valves, or headers critical (required)

Yes No N/A

Pressure drop observed during hold

If applicable, record the measured pressure loss during the hold period.

Final Readiness and Sign-Off

Loop flushed, filled, and ready for connection critical (required)

Yes No N/A

Outstanding deficiencies or non-conformances

List any unresolved items, corrective actions, or follow-up requirements.

Corrective action assigned

Yes No N/A

Inspector signature critical (required)

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