Section 3135B Gas Chlorination Equipment Room
Compressed chlorine gas storage containers and auxiliary components shall be installed indoors in a separate room of not less than 1-hour fire resistant construction and shall comply with the California Fire Code and all of the following.
The gas chlorination equipment room shall not be located in any habitable building, above the first floor or below ground level.
An audible and visible chlorine detection alarm system shall be located in the room containing the gas chlorine equipment. The sensor shall be located within 6 inches (152 mm) of the floor level. The system shall continually monitor the room and shall activate when chlorine concentrations in the room exceed a Permissible Exposure Limit of 0.5 ppm. Activation of the alarm shall shut off the chlorine at the source and turn on the lights and ventilation system. The alarm system shall consist of the following:
- An audible alarm capable of producing a sound level of at least 90 decibels; and
- A visible alarm consisting of a strobe light which is mounted directly over the entrance to the chlorine equipment room. The light shall be visible during daylight hours.
Artificial illumination of at least 50 footcandles as measured 30 inches (750 mm) from the floor shall be provided in the room.
Switches for the control of mechanical ventilation and lighting fixtures shall be located adjacent to the entry door outside the room.
The gas chlorine room shall not be used for the storage of items not related to the use of the gas chlorine equipment.