Some chemical/oil in a bottle was kept on the spare cylinder head for the auxiliary engine and this should have been removed and kept in an appropriate location.
Causal factors: Failure to follow rules; poor housekeeping and guidelines were not followed.
Preventative action: The matter has been discussed in a safety meeting. All were advised that no unidentified items are to be kept, especially with chemicals. All chemical/oil should be properly stored in their respective locations with information provided by the Material Safety Data Sheet (MSDS), with safety and protective items available for immediate use.
A timely reminder of good house – keeping practice. If the contents of the bottle have an MSDS sheet, ensure it is dated.