Whenever inspections of the premises, or methods of operation used in conducting a licensed business, occupation or activity are authorized or required by this code or are reasonably necessary to secure compliance with any provision of this code or to detect violations thereof, it shall be the duty of the licensee or person in charge of such premises, or methods of operation to permit, at any reasonable time, any officer or employee of the city who is authorized or directed to make such inspections to be admitted to such premises, and to observe such methods of operation for the purpose of making said inspections.
In addition to any other penalty which may be provided, the city council may revoke the license of any licensee who refuses to permit any such officer or employee to make such inspections or who interferes with such officer or employee while in the performance of this duty in making such inspections; provided, however, that no license shall be revoked for such cause unless written demand is made upon the licensee or person in charge of the premises, in the name of the city, stating that such inspection is desired at the time it is sought to make the inspection or to obtain the sample. (1977 Code)