5006.6.10.2 Asphyxiant gases.
FC § 5006.6.10.2
When the quantity of cryogenic inert gases or refrigerated carbon dioxide stored, handled or used within a laboratory unit exceeds 60 gallons (227 L), an oxygen sensor shall be installed and maintained at one or more locations within the laboratory unit in accordance with FC 5505.4.1.1.1, provided that at least one oxygen sensor is installed in the laboratory unit.













