Section 5808 — HYDROGEN FUEL GAS ROOMS — 2025 California Fire Code (Title 24, Part 9)

5808.1 General. ¶

5808.1 General. Where required by this code, hydrogen fuel gas rooms shall be designed and constructed in accordance with Sections 5808.1 through 5808.7 and the California Building Code .

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5808.2 Location. Hydrogen fuel gas rooms shall not be located below grade. ¶

5808.2 Location. Hydrogen fuel gas rooms shall not be located below grade.

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5808.3 Design and construction. ¶

5808.3 Design and construction. Hydrogen fuel gas rooms not exceeding the maximum allowable quantity per control area in Table 5003.1.1(1) shall be separated from other areas of the building in accordance with Section 509.1 of the California Building Code . 5808.3.1 Pressure control. Hydrogen fuel gas rooms shall be provided with a ventilation system designed to maintain the room at a negative pressure in relation to surrounding rooms and spaces. 5808.3.2 Windows. Operable windows in interior walls shall not be permitted. Fixed windows shall be permitted where in accordance with Section 716…

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

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5808.4 Exhaust ventilation. ¶

5808.4 Exhaust ventilation. Hydrogen fuel gas rooms shall be provided with mechanical exhaust ventilation in accordance with the applicable provisions of Section 2311.8.2.

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5808.5 Gas detection system. ¶

5808.5 Gas detection system. Hydrogen fuel gas rooms shall be provided with a gas detection system that complies with Sections 916, 5808.5.1 and 5808.5.2. 5808.5.1 System activation. Activation of a gas detection system alarm shall result in both of the following: 1. Initiation of distinct audible and visible alarm signals both inside and outside of the hydrogen fuel gas room. 2. Automatic activation of the mechanical exhaust ventilation system. 5808.5.2 Failure of the gas detection system. Failure of the gas detection system shall automatically activate the mechanical exhaust ventilation…

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

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5808.6 Explosion control. ¶

5808.6 Explosion control. Explosion control shall be provided where required by Section 911.

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5808.7 Standby power. ¶

5808.7 Standby power. Mechanical ventilation and gas detection systems shall be connected to a standby power system in accordance with Section 1203.

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