Narrative:

Refused airplane due to excessive fumes from previous chemical spill. Aircraft main deck had been cleaned by vendor. However; maintenance advised the chemical has unseated the tape that seals the joints between floor sections. He said proper cleanup may require removal of main deck flooring in order to access remaining chemical.this was the 3rd refusal of this airplane. I had completed my walk-around inspection and was surprised to see the captain deplane as I entered. He reported the fumes and the ramp attempted to clean the remaining chemical residue. Upon returning; we tested the airplane by closing all doors. It only took 5 minutes for the odor to become significant. When the captain turned on the packs; the concentration immediately became overwhelming. There was a ramp agent in the cockpit who commented that she wouldn't drive a car with this intense odor; she wouldn't expect us to fly an airplane in this condition. We exited the airplane and the captain informed the mechanics; dispatch; and the duty officer that the airplane was unsafe to fly. As noted above; subsequent cleaning of main deck was insufficient to remove spill from all areas to which it has migrated.original spill occurred earlier the same day. Failure of personnel to properly clean the spill has allowed it to migrate to inaccessible areas of the airplane.all spills should require immediate stop to movement of freight and involvement of most-senior manager on duty.

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Original NASA ASRS Text

Title: B767-300 First Officer reported crew refusing aircraft due to residual fumes following previous chemical spill clean up.

Narrative: Refused airplane due to excessive fumes from previous chemical spill. Aircraft main deck had been cleaned by vendor. However; maintenance advised the chemical has unseated the tape that seals the joints between floor sections. He said proper cleanup may require removal of main deck flooring in order to access remaining chemical.This was the 3rd refusal of this airplane. I had completed my walk-around inspection and was surprised to see the Captain deplane as I entered. He reported the fumes and the ramp attempted to clean the remaining chemical residue. Upon returning; we tested the airplane by closing all doors. It only took 5 minutes for the odor to become significant. When the Captain turned on the packs; the concentration immediately became overwhelming. There was a ramp agent in the cockpit who commented that she wouldn't drive a car with this intense odor; she wouldn't expect us to fly an airplane in this condition. We exited the airplane and the Captain informed the mechanics; dispatch; and the Duty Officer that the airplane was unsafe to fly. As noted above; subsequent cleaning of main deck was insufficient to remove spill from all areas to which it has migrated.Original spill occurred earlier the same day. Failure of personnel to properly clean the spill has allowed it to migrate to inaccessible areas of the airplane.All spills should require immediate stop to movement of freight and involvement of most-senior manager on duty.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.