Our Process


Safety Meeting: Before any work begins, Quattro personnel will meet to review possible hazards, emergency procedures, general safety issue and site specific factors that must be understood while working at the site, This typically includes an initial meeting with the designated contact person to discuss the scope of the project and set proper expectations. When necessary, sign-offs must be collected before the project can start.

Lock Out/ Tag Out: Before any silo inspection or cleaning begins, all Quattro personnel position a lock and an accompanying tag on all power sources. Plant employees then proceed in the same fashion. This ensures that everyone on the project is aware of who is working on the confined space area. All of the equipment is tested to make sure it is properly shut down.

Gas Monitoring: Once all electrical equipment is powered down, the air inside the vessel needs to be tested to make sure it is safe. A gas monitor will be turned on before entry so that it can calibrate and cycle through its self-checks. Next, the calibration cup is attached to the unit, and the bump test gas tube is connected. The bump test will confirm that all sensors are responding properly. If all goes well, the calibration cup is removed and the gas monitor will get attached to the sampling pump and secured in place. Once the sampling pump has been turned on and tested for false alarms, the pump and monitor are lowered into the silo. Those readings get recorded on the CSE (confined space entry) permit form.

Proper PPE (Personal Protective Equipment): A safety harness is one of the most important safety tools a Quattro employee will need on a confined space entry project. Before the harness is used, Quattro checks the last time the harness was tested and confirms the harness has been inspected within the time frame the manufacturer requires. The harness will then be inspected to make sure there are no cuts, abrasions, and wear. The steel will not be rusted or pitted, all safety labels shall be intact, and the snaps will be tested. The harness shall be tight around the legs, but not too tight. If fitted properly, the D-ring on the back shall be directly between the shoulder blades. Quattro personnel will also wear a protective face gas mask, hard hats, and ear protectors.

The Tripod: A sturdy tripod is set up over the entry point, and the harness is connected to the tripod. The person entering the silo is lowered and brought back up through a hoist, also located on the tripod.

Confined Space Entry is just one aspect of Quattro’s comprehensive service offering.

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