How do you check commissioning records in Gabiley?

A commissioning record in Gabiley proves performance only when someone ran a measured test and wrote down the readings. A signed sheet that lists pumps, tanks or panels as commissioned tells you nothing on its own. Ask who carried out the test, what instrument was used and which pass marks applied. Without those three answers, the record shows attendance, not working systems. That gap is where unverified performance starts.

What goes into a commissioning record?

A usable record has a test method, the readings taken, the acceptance limit and the name of the person who ran the test. For a water tank or borehole pump, that can mean the flow measured at the outlet over a set period, the pressure at the draw off point, and the time the pump held pressure without cycling. For a solar array, it can mean output readings at a stated time of day with the sky noted. General practice is to record each reading against the limit written in the project's specification. Ask the project engineer to confirm those limits for your build, because they are set by the design, not by the commissioning team. A record without a method and a limit is a claim, not a test.

Where does the skills gap show?

The gap usually appears in the steps between switching a system on and calling it commissioned. A team may run a pump, see water move and sign the line, without measuring flow, checking suction lift or watching for air locks after a restart. On electrical work, a board may be energised without a continuity or insulation reading logged against the specified value. The person may be able to install the system but not to design its test, set the instrument up or read it correctly. Ask for the method statement before the test and the instrument's calibration or serial number after it. If the same sheet appears for two different systems with identical wording, treat the record as unverified and ask the engineer to witness a repeat test.

How do you check the record on site?

Watch one test being run and write down what you see. Pick the system with the most consequence if it fails, such as a pump serving upper floors, a tank that must hold level, or a panel array feeding a cold room. Before the test, ask the crew to state the method and the acceptance limit in their own words. During the test, note the instrument, the reading and the time. After it, ask for the same test to be repeated an hour later, which shows whether the first result holds once the system has run and cooled. Ask the municipal engineer's office whether it holds records or requirements for the systems in question, and request any earlier test sheets for the same equipment. If the crew cannot explain the method, arrange for the engineer to witness the retest and hold handover until the readings are logged.

What to do next

Pick one system in the building and ask for its full commissioning file: method statement, instrument details, readings and acceptance limits. Watch that system being tested, then ask for a repeat an hour later. If the file is incomplete, write to the project engineer and request a witnessed retest before you take over the building.