If gaseous chlorine is used as the disinfectant for a public spa or hot tub, however , the following procedures should be used. ... Storage of any other chemicals in the chlorine enclosure should be forbidden except those used to check chlorine leaks. ... fan capable of producing at least one air change per minute and automatic louvers of good design near the top of the enclosure for admitting fresh air.
|Title||:||Suggested Health and Safety Guidelines for Public Spas and Hot Tubs|