Chapter 12 — ENERGY SYSTEMS — Campbell Municipal Code

1202.1 Definitions. The following terms are defined in Chapter 2:¶

BATTERY SYSTEM, STATIONARY STORAGE.

BATTERY TYPES.

CAPACITOR ENERGY STORAGE SYSTEM.

CRITICAL CIRCUIT.

EMERGENCY POWER SYSTEM.

ENERGY STORAGE MANAGEMENT SYSTEMS.

ENERGY STORAGE SYSTEM (ESS).

ENERGY STORAGE SYSTEM, ELECTROCHEMICAL.

ENERGY STORAGE SYSTEM, MOBILE.

ENERGY STORAGE SYSTEM, WALK-IN UNIT.

ENERGY STORAGE SYSTEM CABINET.

ENERGY STORAGE SYSTEM COMMISSIONING.

ENERGY STORAGE SYSTEM DECOMMISSIONING.

FUEL CELL POWER SYSTEM, STATIONARY.

LARGE-SCALE FIRE TESTING.

PORTABLE GENERATOR.

STANDBY POWER SYSTEM.

SECTION 1207 ELECTRICAL ENERGY STORAGE SYSTEMS (ESS).

BUILDING STANDARDS

1207.1.5 Large-scale fire test. Where required elsewhere in Section 1207, large-scale fire testing shall be conducted in accordance with NFPA 855, and UL 9540A. The testing shall be conducted or witnessed and reported by an approved testing laboratory and show that a fire involving one ESS will not propagate to an adjacent ESS, and where installed within buildings, enclosed areas and walk-in units will be contained within the room, enclosed area or walk-in unit for a duration equal to the fire-resistance rating of the room separation specified in Section 1207.7.4. The test report shall be provided to the fire code official for review and approval in accordance with Section 104.8.2.

1207.2.2.1 Ongoing inspection and testing. Systems that monitor and protect the ESS installation shall be inspected and tested in accordance with the manufacturer's instructions and the operation and maintenance manual. Inspection and testing records shall be maintained in the operation and maintenance manual, and made available to the fire code official upon request.

1207.5.2 Maximum allowable quantities. Fire areas within rooms, areas and walk-in units containing electrochemical ESS shall not exceed the maximum allowable quantities in Table 1207.5. The allowable number of fire areas, maximum allowable quantity, and fire-resistance rating of fire-barriers shall comply with Table 1207.5.1.

Exceptions:

Where approved by the fire code official, rooms, areas and walk-in units containing electrochemical ESS that exceed the amounts in Table 1207.5 shall be permitted based on a hazardous mitigation analysis in accordance with Section 1207.1.4 and large-scale fire testing complying with Section 1207.1.5.

Lead-acid and nickel-cadmium battery systems installed in facilities under the exclusive control of communications utilities and operating at less than 50 VAC and 60 VDC in accordance with NFPA 76.

Dedicated-use buildings in compliance with Section 1207.7.1.

TABLE 1207.5.1 DESIGN AND NUMBER OF ESS FIRE AREAS
STORY		PERCENTAGE OF MAXIMUM ALLOWABLE QUANTITY PER FIRE AREA	NUMBER OF FIRE AREAS PER STORY	FIRE-RESISTANCE RATING FOR FIRE BARRIERS IN HOURS
Above grade plan	Higher than 9 7—9 6	25 50 50	1 2 2	3 2 2
	5 4 3 2 1	50 75 100 100 100	2 4 6 6 6	2 2 2 2 2
Below grade plan	1 2 Lower than 2	100 50 Not Allowed	4 2 Not Allowed	3 3 Not Allowed

1207.5.5 Fire suppression systems. Rooms and areas within buildings and walk-in units containing electrochemical ESS shall be protected by an automatic fire suppression system designed and installed in accordance with one of the following:

An automatic sprinkler system designed and installed in accordance with Section 903.3.1.1 with a minimum density of 0.3 gpm/ft2 (1.14 L/min) based on the fire area or 2,500 square-foot (232 m2) design area, whichever is larger.

Where approved, an automatic sprinkler system designed and installed in accordance with Section 903.3.1.1 with a sprinkler hazard classification based on large-scale fire testing complying with Section 1207.1.5.

The following alternative automatic fire-extinguishing systems designed and installed in accordance with Section 904, provided that the installation is approved by the fire code official based on large-scale fire testing complying with Section 1207.1.5:

Exceptions & meaning →

3.1. NFPA 12, Standard on Carbon Dioxide Extinguishing Systems.¶

3.2. NFPA 15, Standard for Water Spray Fixed Systems for Fire Protection.¶

3.3. NFPA 750, Standard on Water Mist Fire Protection Systems.¶

3.4. NFPA 2001, Standard on Clean Agent Fire-Extinguishing Systems.¶

3.5. NFPA 2010, Standard for Fixed Aerosol Fire-Extinguishing Systems.¶

Exception: Fire suppression systems for lead-acid and nickel-cadmium battery systems at facilities under the exclusive control of communications utilities that operate at less than 50 VAC and 60 VDC shall be provided where required by NFPA 76.

1207.11.3 Location. ESS shall be installed only in the following locations:

Detached garages and detached accessory structures.

Attached garages separated from the dwelling unit living space and sleeping units in accordance with Section R302.6.

Outdoors or on the exterior side of the exterior walls not less than 3 feet (914 mm) from doors and windows directly entering the dwelling unit and not below or above any emergency escape and rescue openings.

Enclosed utility closets, basements, storage or utility spaces within dwelling units with finished or noncombustible walls and ceilings. Walls and ceilings of unfinished wood-framed construction shall be provided with not less than ⅝-inch (15.9 mm) Type X gypsum wallboard.

ESS shall not be installed in sleeping rooms, closets, spaces opening directly into sleeping rooms or in habitable spaces of dwelling units.

1207.11.6 Fire detection. ESS installed in Group R-3 and R-4 occupancies shall comply with the following:

Rooms and areas within dwellings units, sleeping units, basements and attached garages in which ESS are installed shall be protected by smoke alarms in accordance with Section 907.2.11.

A listed heat alarm interconnected to the smoke alarms shall be installed in locations within dwelling units, sleeping units and attached garages where smoke alarms cannot be installed based on their listing.

Exceptions:

A listed heat detector interconnected to devices that provide an audible alarm at all sleeping areas may be used in place of a heat alarm.

A fire sprinkler associated with an approved automatic sprinkler system, that triggers an audible alarm at all sleeping areas upon activation of the waterflow switch, may be used in place of a heat alarm.

Exceptions & meaning →