1620 75TH ST SW BASE FILE 2018-01-02 MF Import

1997 UNIFORM FIRE CODE APPENDIX 114 APPENDIX II-1 OZONE GAS -GENERATING EQUIPMENT SECTION 1 — 5a;OPE Equipment having a maximum ozone -generating capacity of 112 pound (0.23 kg) or mo.. over a 24-hour period shall be in ac- cordance with Appendix 11-1. EXCEPTION: Ozone -generating equipment used in Group R. Di. vision 3 Occupancirs. SECTION 2 — DEFINIT60NS For the purpose of Appendix 11-1, certain terms are defined ss fol- lows: OZONE GENERATOR is equipment which causes lire pro- duction of ozone. SECTION 3 — STANDARDS The following standard is intended for use as a guide in the de- sign, fabrication, testing and use of equipment regulated by Appendix 11.1: National Electric Manufacturers Association 2101 L Street, NAV. Suite 300 Washington, DC 20037 Standard 250, Enclosures for Electrical Equipment SECTION 4 — LOCATION 4.1 General. Ozone generators shall be located in approved cabinets or ozone -generator rooms in accordance with Section 4. EXCEPTION: A generator within an approved pressure vessel need nor be in a cabinet or ozone -generator rwtm when baled outside or buildings 4.2 Cabinets. Ozone cabinets shall be constmztcd of approved materials compatible with ozone in accordance with nationally recognized standards. Cabinets shall display an approved sign stating, OZONE GAS GENERATOR —HIGHLY TOXIC —OX- IDIZER. See Section 3. Cabinets shall be braced for seismic activity in accordance with the Building Code. Cabinets shall be mechanically ventilated with a minimum of six air changes per hour. Exhausted air shall be directed to a treat- ment system designed to reduce the discharge concentration of the gas to one half of the IDLH value at the point of discharge to the atmosphere. The average velocity of ventilation at makeup air openings with cabinet doors closed shall not be less than 200 feet per min. ale (1.02 m/s). 4.3 Ozone -generator Rooms. Ozone -generator rooms shall be mechanically ventilated with a minimum of six air changes per hour. Exhausted air shall be directed to a treatment system de. signed to reduce the discharge concentration of gas to one half of the IDLH value at the point of discharge to the atmosphere or ozone -generator rooms shall be equipped with a continuous gas -detection system which will shut off the generator and sound a local alarm when concentrations above the permissible expo. sure limit occur. Ozone -generator rooms shall not be normally occupied, and such rooms shall be ke, free of combustible and hazardous mate- rial storage. Room access doors shall display an approved sign stating, OZONE GAS GENERATOR —HIGHLY TOXIC —OX- IDIZER. SECTION 5 -- PIPING VALVES AND FITTINGS 5.1 General. Piping, valves, fittings and related components used to convey ozone shall be in accordance with Section 5. 5.2 Secondary Containment. Secondary containment, such as double -walled piping or exhausted enclosures, shall be provided for piping, valves, fiuing:i and related components. Secondary containment shall be capable of directing a sudden release to an approved treatment system. EXCEFTION: Welded stainless steel piping and tubing. 5.3 Materials. Materials shall be compatible with ozone and shall be rated for the design operating pressures. 5.4 Identification. Piping shall be identified "Ozone Gas — Highly Toxic —Oxidizer." SECTION 6 — AUTOMATIC SHUTDOWN Ozone generators shall be designed to automatically shut down under the following conditions: 1. When the dissolved ozone concentration in the water being treated is above saturation when measured at the point where the water is exposed to the atmosphere, 2. When the process using generated ozone is shut down, 3. Failure of the ventilation system for the cabinet or ozone - generator norm, or 4. Failure of the gas -detection system. SECTION 7 — MANUAL SHUTDOWN Manual shutdown controls shall be provided at the generator and, if in a room, within 10 feet (3048 ram) of the main exit or exit -ac- cess door. 1_997