Section 3905 — SAFETY SYSTEMS — 2025 California Fire Code (Title 24, Part 9)

3905.1 Gas detection. ¶

3905.1 Gas detection. For extraction processes utilizing flammable gases as solvents, a gas detection system complying with Section 916 shall be provided. 39-4 2025 CALIFORNIA FIRE CODE on Jul 18, 2025 11:14 AM (CDT) THEREUNDER. PROCESSING AND EXTRACTION FACILITIES 3905.1.1 Operation. Activation of the gas detection system shall result in all the following: 1. Initiation of distinct audible and visual alarm signals in the extraction room. 2. Deactivation of all heating systems located in the extraction room. 3. Activation of the mechanical ventilation system, where the system is interlocked…

provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use

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3905.2 Emergency shutoff. ¶

3905.2 Emergency shutoff. Extraction processes utilizing gaseous hydrocarbon-based solvents shall be provided with emergency shutoff systems in accordance with Section 5803.1.3.

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3905.3 Ventilation. ¶

3905.3 Ventilation. Continuous mechanical exhaust ventilation shall be provided in accordance with Sections 3905.3.1 through 3905.3.4 and Chapter 4 of the California Mechanical Code . 3905.3.1 Extraction processes using flammable or combustible liquids or gases. Continuous mechanical exhaust ventilation shall be provided where extraction processes use flammable or combustible liquids or gases. The mechanical exhaust ventilation shall provide a minimum airflow rate of not less than 5 cfm/ft [2 ] [0.0254 m [3] /(s × m [2] )] of floor area to prevent an accumulation of flammable vapors from…

provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use

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