Specifications include, but are not limited to: Perform Annual Maintenance on oil and gas boilers at Logan International Airport, stack and efficiency testing and a report for each boiler shall be provided in the format specified by the Authority. The Annual Maintenance/Cleanings shall be performed on a unit (Per Boiler) pricing detail. Any work deemed above the normal OEM specified Annual Maintenance scope shall be approved by the Authority before starting. Annual Maintenance shall include but not be limited to the following; open, brush, vacuum clean combustion chamber, replace nozzles, replace all filters, replace electrodes, test ignition transformers, set parameters for high & low firing where applicable, stack testing and accurate record of test results. Test operations, operational set-points, controls, control panels and safeties. Maintain oil circulator skid including but not limited to: pumps, motors, filters/strainers, and automatic controls associated with contract boilers.