Where the total voltage exceeds volts, batteries shall be sectionalized into groups of volts or less, and each group shall have the individual cells installed in trays or on racks. The pro- visions of Cells shall be installed in groups having a total nominal voltage of not over volts. Insulation, which can be air, shall be provided.
The provisions of this article shall apply to all stationary installations of storage batteries. Nominal Battery Voltage. The voltage calculated on the basis of 2 volts per cell for the lead-acid type and 1. Sealed Cell or Battery.
A sealed cell or battery is one that has no provision for the addition of water or electrolyte or for external measurement of electrolyte specific gravity.
The individual cells shall be permitted to contain a venting arrangement as described in Storage Battery. A battery comprised of one or more rechargeable cells of the lead-acid, nickel-cadmium, or other rechargeable electrochemical types. Cells in jars of conductive material shall be installed in trays of nonconductive material with not more than 20 cells 24 volts, nominal in the series circuit in any one tray.
D Sealed Cells or Batteries. Stationary storage battery systems shall be allowed to be in the same room with the equipment they support. In other than assembly, educational, detention, and correction facilities ; health care, ambulatory health care, and day care centers; and residential board and care and residential occupancies , stationary storage battery systems shall be located in a room separated from other portions of the building by a minimum of a 1-hour fire barrier.
In assembly, educational, detention, and correction facilities ; health care, ambulatory health care, and day care centers; and residential board and care and residential occupancies , stationary storage battery systems shall be located in a room separated from other portions of the building by a minimum of a 2-hour fire barrier. Stationary storage battery systems located outdoors shall comply with this paragraph, in addition to all applicable requirements of Section Installations in outdoor enclosures or containers that are occupied for servicing, testing, maintenance, and other functions shall be treated as stationary storage battery system rooms.
Battery arrays in noncombustible containers shall not be required to be spaced 3 ft mm from the container walls. Stationary storage battery systems located outdoors shall be separated by a minimum 5 ft mm from the following: Lot lines Public ways Buildings Stored combustible materials Hazardous materials High-piled stock Other exposure hazards.
The AHJ shall be permitted to authorize smaller separation distances if large-scale fire and fault condition testing conducted or witnessed and reported by an approved testing laboratory is provided showing that a fire involving the system will not adversely impact occupant egress from adjacent buildings, or adversely impact adjacent stored materials or structures. Stationary storage battery systems located outdoors shall be separated from any means of egress as required by the AHJ to ensure safe egress under fire conditions, but in no case less than 10 ft mm.
The AHJ shall be permitted to authorize smaller separation distances if large-scale fire and fault condition testing conducted or witnessed and reported by an approved testing laboratory is provided showing that a fire involving the system will not adversely impact occupant egress. Outdoor areas in which stationary storage battery systems are located shall be secured against unauthorized entry in an approved manner.
Fire areas within buildings containing stationary storage battery systems exceeding the maximum allowable quantities in Table Where approved by the AHJ , areas containing stationary storage battery systems that exceed the amounts in Table Where areas within buildings contain a combination of energy system technologies, the total aggregate quantities shall be determined based on the sum of percentages of each type divided by the maximum allowable quantity of each type.
If the sum of the percentages exceeds percent, the area shall be treated as a high-hazard classification in accordance with Table Battery arrays shall comply with Storage batteries, prepackaged stationary storage battery systems , and pre-engineered stationary storage battery systems shall be segregated into arrays not exceeding 50 KWh Mega joules each. Each array shall be spaced a minimum 3 ft mm from other arrays and from walls in the storage room or area.
The storage arrangements shall comply with the egress provisions in NFPA Listed pre-engineered stationary storage battery systems and prepackaged stationary storage battery systems shall not exceed KWh Mega joules each.
The AHJ shall be permitted to approve listed pre-engineered and prepackaged battery arrays with larger capacities or smaller battery array spacing if large-scale fire and fault condition testing conducted or witnessed and reported by an approved testing laboratory is provided showing that a fire involving one array will not propagate to an adjacent array, and be contained within the room for a duration equal to the fire resistance rating of the room separation required by A failure mode and effects analysis FMEA or other approved hazard mitigation analysis shall be provided to the AHJ when any of the following conditions are present: Battery technologies not specifically identified in Table More than one stationary storage battery technology is provided in a room or indoor area where there is a potential for adverse interaction between technologies.
When allowed as a basis for increasing maximum allowable quantities as specified in Table The analysis shall evaluate the consequences of the following failure modes, and others deemed necessary by the AHJ. Only single failure modes shall be considered for each mode: Thermal runaway condition in a single module or array Failure of a battery management system Failure of a required ventilation system Voltage surges on the primary electric supply Short circuits on the load side of the stationary battery storage system Failure of the smoke detection, fire suppression, or gas detection system.
The AHJ shall be permitted to approve the hazardous mitigation analysis provided the consequences of the FMEA demonstrate the following: Fires or explosions will be contained within unoccupied stationary storage battery system rooms for the minimum duration of the fire resistance rated specified in Construction, equipment, and systems that are required for the stationary storage battery system to comply with the hazardous mitigation analysis shall be installed, maintained, and tested in accordance with nationally recognized standards and specified design parameters.
Prepackaged and pre-engineered stationary storage battery systems shall be listed in accordance with UL , Outline of Investigation for Energy Storage Systems and Equipment. Prepackaged and pre-engineered stationary storage battery systems shall be installed in accordance with their listing and the manufacturer's instructions. The storage battery environment shall be controlled to maintain temperatures and conditions within the battery manufacturer's specifications.
An approved battery management system shall be provided for battery technologies for monitoring and balancing cell voltages, currents, and temperatures within the manufacturer's specifications. The system shall transmit an alarm signal to an approved location if potentially hazardous temperatures or other conditions including short circuits, overvoltage i.
Battery chargers shall be compatible with the battery manufacturer's electrical ratings and charging specifications. Battery chargers shall be listed in accordance with the UL , Standard for Industrial Battery Chargers , or provided as part of a listed pre-engineered or prepackaged stationary storage battery system. Vehicle impact protection shall be provided where stationary storage battery systems are subject to impact by motor vehicles.
Combustible materials not related to the stationary storage battery system shall not be stored in battery rooms, cabinets, or enclosures. Combustible materials in occupied work centers shall comply with Section Approved signage shall be provided on doors or in approved locations near entrances to stationary battery storage system rooms.
0コメント