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 Los Angeles County
 Code of Ordinances
 Title 29. MECHANICAL CODE

  TABLE 11-1 - REFRIGERENTGROUPS, PROPERTIES AND ALLOWABLE QUANTITIES  

Latest version.
  • REFRIGERANT CHEMICAL FORMULA CHEMICAL NAME (Composition for Blends) SAFETY GROUP PEL (ppm) IDLH (ppm) POUNDS PER 1,000 CF OF SPACE
    R-11 CCI 3 F Trichlorofluoromethane A1 C1000 4,000 1.60
    R-12 CCI 2 F 2 Dichlorodifluoromethane A1 1,000 50,000 12.00
    R-22 CHCIF 2 Chlorodifluoromethane A1 1,000 50,000 9.40
    R-113 CCI 2 FCCIF 2 1,1,2-Trichloro-1,2,2- Trifluoroethane A1 1,000 4,000 1.90
    R-114 CCIF 2 CCIF 2 1,2-Dichloro-1,1,2,2- tetrafluoroethane A1 1,000 21,000 9.40
    R-123 CHCI 2 -CF 3 2,2-Dichloro-1,1,1- Trifluoroethane B1 50 1,000 0.40
    R-124 CHCIFCF 3 1,2-Chloro-1,1,1,2- tetrafluoroethane A1 — — —
    R-134a CF 3 CH 2 F 1,1,1,2-Tetrafluoroethane A1 1,000 60,000 16.00
    R-245fa CF 3 CH 2 CHF 2 1,1,1,3,3-pentafluoropropane B-1 300 — —
    R-500 73.8% 26.2% Azeotrope CCI 2 F 2 CH 3 CHF 2 R-12/152a(73.8/26.2) Dichlorodifluoromethane 1,1-Difluoroethane A1 1,000 50,000 12.00
    R-502 48% 51.2% Azeotrope CHCIF 2 CCIF 2 CF 3 R-22/115(48.8/51.2) Chlorodifluoromethane 1-Chloro-1,1,2,2,2- Pentafluoroethane A1 1,000 50,000 19.00
    R-717 NH 3 Ammonia B2 50 500 0.022
    R-744 CO 2 Carbon dioxide A1 5,000 50,000 5.70
    R-1270 CH 3 CH=CH 2 Propene (propylene) A3 660 3,400 0.37

     

    1 Refrigerant safety group designation is in accordance with Section 1102.0.

    2 Refrigerant properties are those needed for this Chapter.

    3 Allowable quantities are for high-probability systems under Section 1103.0 only.

    4 Chemical name shown is the preferred name.

    5 PEL is that designated in 29 CFR 1910.1000 unless otherwise indicated.

    6 IDLH is that designated by NIOSH unless otherwise indicated.

    7 LFL is percent refrigerant by volume in air at 68 o F (20 o C) and 29.92 in Hg (101.3 kPa); N/A - Not applicable (not flame limits)

    9 The PEL value shown is the TLV-C recommended by the American Conference of Governmental Industrial Hygienists.

    10 The IDLH value shown is reduced from that designated by NIOSH in light of cardiac sensitization potential.

    11 A PEL has not yet been established; the value given was determined in a consistent manner.

    12 An IDLH has not yet been established; the value given was determined in a consistent manner.

    13 OSHA PEL is 50 ppm; ACGIH TLV-TWA is 25 ppm.

(Ord. 2007-0111 § 5 (part), 2007.)