Specifications include, but are not limited to: Each Annual Inspection shall include certification, back - flushing of the Fire Department Connection, tagging all valves and hoses and any applicable testing and inspections as required by the latest applicable City and NFPA standards. All test to be performed in accordance with License and Inspection regulations for Inspections and Trip Test. Vendor is responsible for visiting each site and determining exact equipment at each site. If Installation/reinstallation is required by the City of Philadelphia, then it shall be performed in accordance with NFPA Standard #13, or latest revisions. Fire Suppression System Workers certified in the classification relating to the work performed must be present to perform the work.