Section 444.180 - Disinfectants: Use of chlorine gasAn owner of a public bathing or swimming facility who obtained his or her operating permit on or after January 16, 1996, may not use compressed chlorine gas to sanitize or disinfect the facility. An owner of a public bathing or swimming facility who obtained his or her operating permit before January 16, 1996, may use compressed chlorine gas to sanitize the facility if the following features are provided:
1. The cylinders of chlorine, the scale required by subsection 15 and the chlorinator must be kept above grade in a separate, well-ventilated, reasonably gastight and corrosion-resistant enclosure.2. The enclosure must be provided with vents near the floor which terminate outdoors through an airtight duct at a point where chlorine gas will not sink into spaces below the surface of the ground. Mechanical ventilation must be used. The exhaust system must be capable of providing not less than two air changes per hour in the enclosure and comply with applicable building and fire codes.3. The door to the enclosure must not open into the pool enclosure and must open outward. All enclosures must be equipped with a quick exit door push bar. The enclosure must be equipped with a key locked latch, with the key lock located on the outside of the enclosure. The enclosure must be locked at all times except when personnel are inside.4. An observation window must be provided in the wall or door of the enclosure that provides a good view of the inside of the enclosure and is not less than 18 square inches (116.14 square centimeters) in size. Artificial illumination of at least 20 foot-candles must be provided to permit the observation and maintenance of the equipment in the enclosure.5. Switches for the operation of the exhaust fan and the artificial illumination must be located on the outside of the enclosure and near the door.6. The floor area of the enclosure must be of adequate size to house the chlorinator.7. The chlorinator must be of rugged design, capable of withstanding wear without developing leaks.8. Chlorine cylinders must be anchored to prevent their falling over. A valve stem wrench or valve handle must be maintained on the chlorine cylinder so the supply of gas can be shut off quickly in the case of an emergency. The valve protection hood must be kept in place except when the cylinder is in operation.9. The chlorine feeding device must be vacuum operated and designed so that during accidents or interruptions of the water supply, or break in the system, the feeder positively and automatically shuts off the supply of chlorine gas and vents any leaking gas outside the enclosure at a safe point of discharge. The enclosure must be equipped with an acceptable and properly functioning device, with an audible alarm, to detect chlorine leakage. A leakage test kit consisting of ammonia water and a sponge swab must also be provided.10. The chlorinator must be a solution feed type, capable of delivering chlorine at its maximum rate without releasing chlorine gas into the equipment room. Pressure vacuum relief vents must discharge to the outside atmosphere in a safe area.11. The temperature of the chlorine metering equipment must not fall below 55°F (12.8 °C). A means to keep the temperature above that level must be provided and used.12. The chlorinators must be designed to prevent the backflow of water into the chlorine solution container.13. A gas mask designed for use in a chlorine atmosphere and of a type approved by the appropriate federal agency must be located outside of the enclosure in a closed, unlocked cabinet. A replacement canister for use with the mask and a record book for recording any use of the mask must also be kept in the cabinet.14. A placard must be posted on the outside of the enclosure that describes the first-aid measures for treating victims of chlorine exposure and includes the telephone number of the supplier of chlorine gas.15. A scale or other suitable device must be provided so that the amount of chlorine gas contained in the cylinder can be determined.16. A sign or placard stating "CAUTION - CHLORINE GAS" must be placed on the door to the chlorinator room in a location where it is readily visible to any person approaching the door.17. Chlorine or chlorination equipment must not be located in a building which houses sleeping guests.18. Facilities that use gas chlorination must employ personnel trained to the satisfaction of the health authority in the safe handling of chlorine and in the operation and maintenance of chlorination equipment. These personnel must be available at all times that the facility is open to ensure the safety of employees and visitors.19. Gas chlorine cylinders must not be stored in areas where they are exposed to direct sunlight or are readily accessible to unauthorized persons.Nev. Admin. Code § 444.180
Bd. of Health, Public Bathing Places Reg. Art. 29 §§ 29.2-29.2.17, eff. 5-21-74-NAC A 11-1-88; 1-16-96