Grease Interceptor Repair and Inspection After the Pumper Leaves

A grease interceptor that has been pumped on schedule can still be failing. The usual culprits are inside the tank: a baffle that has cracked or fallen over, an inlet or outlet tee that has broken off, a missing standpipe extension, or a hard crust of grease sitting on the pass-over baffle. Any of those lets grease slip past the tank toward the sewer, even when the tank is not full.

You find out in one of three ways. An inspector flags it, a pumper tells you what they saw when the lid came off, or the kitchen starts draining slowly a few days after a pump-out. In every case the pumper has already done their part. What is left is the repair.

The order matters. A separate pumping company empties and cleans the tank first, often in the early morning before the kitchen opens. We come after that, once the tank is empty and the lid is open, so we can see every internal part.

We check the baffle and both tees, look at the walls and lid for damage, chip hardened grease off the pass-over baffle, and note anything missing. We also run a camera down the line behind the tank, because a tank that has been leaking grease for months usually leaves a coating downstream.

If someone has to go inside the tank, that is confined-space work. Tanks can hold low oxygen and hydrogen sulfide gas, and OSHA's permit-required confined space standard governs entry, including testing the air. We send a three-person crew with fresh-air intake and a tripod and harness for lowering, and the work is planned before anyone goes down.

Most repairs are small: reseating or replacing a baffle, replacing a broken tee or elbow, adding a missing standpipe extension, or clearing the crust off the pass-over. We do these during the same visit when we can. If the line behind the tank is coated, we jet it and camera it afterward.

When the tank itself is cracked, corroded or undersized, patching won't hold. We write a proposal for the bigger fix and explain what a replacement involves. That conversation is covered on our interceptor replacement page.

Book the pumper first and tell us the date and time. We coordinate with your pumper, and the pumping charge can go on one invoice if you prefer. Phoenix requires maintenance records for interceptors, so keep the pumper's manifest and our work record together. Many chain and managed locations also require a vendor check-in, a work order number or before-and-after photos, and we work inside those rules. A repair beyond the not-to-exceed limit on the work order waits for approval first.