In any occupancy where a required fire protection system is out of service, a fire watch shall be maintained by one or more persons holding a Certificate of Fitness. For the initial four (4) hours of a planned or an unplanned out of service condition when the effected area does not exceed 50,000 square feet, the impairment coordinator or a trained and knowledgeable person who is capable of performing fire watch duties and is designated by the building owner may perform the fire watch duties. After four hours of an out of service condition, such patrols shall only be conducted by fire guards holding a Certificate of Fitness. 

This Certificate of Fitness is valid only for the specific person to whom it is issued and can be used anywhere within New York City.