Specifications include, but are not limited to: : Routine maintenance shall be performed on a weekly basis. As a minimum, the following work shall be performed: Check for loose or corroded wires, Check for loose chlorine sensing tube connections, Wipe clean all tubing and panels to remove dust and chlorine residue, Repair system as necessary, and Clean and organize the work area. In addition, the contractor shall remove the sensor and transmitter after it has been in service for a period of two (2) years and replace with the spare part. Each week, perform an electronic test of the system, confirm operation of warning horn and alarm, Each month, perform sensor test, and Semi-annually, calibrate the sensor using a certified low- level chlorine gas standard (10 ppm maximum). System overview of the chlorine gas monitoring system, Discussion of the various alarm conditions, A review of the chlorine MSDS sheet, Recommended evacuation plan, and Emergency response contacts.