narcosis, cardiac sensitization or insufficient oxygen to support life) for occupants in the event of refrigerant leakage. Therefore the listed values are chosen to minimize negative effects (e.g. Limiting the total quantity of refrigerant permitted in a specified occupied space is a significant health and safety issue. Safety Bulletin Maximum Refrigerant Quantities per Occupied Space Derivation of values for Table 1, CSA B52-13 for A1 and B1 Refrigerants Introduction This information bulletin serves to provide additional information with respect to the derivation of the refrigerant quantities per occupied space as listed in Table 1, CSA B52-13 Mechanical Refrigeration Code for A1 and B1 refrigerants.
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