Heads up: There are no amended sections in this chapter.
Stationary storage battery systems having an electrolyte capacity of more than 100 gal (378.5 L) in sprinklered buildings or 50 gal (189.3 L) in unsprinklered buildings for flooded lead-acid, nickel-cadmium, and valve-regulated lead-acid (VRLA) batteries or 1000 lb (454 kg) for lithium-ion and lithium metal polymer batteries used for facility standby power, emergency power, or uninterrupted power supplies shall be in accordance with Chapter 52 and Table 52.1.
Table 52.1 Battery Requirements
|Requirement||Nonrecombinant Batteries||Recombinant Batteries||Other|
|Flooded Lead-Acid||Flooded Nickel-Cadmium (Ni-Cd)||Valve-Regulated Lead-Acid (VRLA)||Lithium-Ion||Lithium Metal Polymer|
|Safety caps||Venting caps||Venting caps||Self-resealing flame-arresting caps||No caps||No caps|
|Thermal runaway management||Not required||Not required||Required||Not required||Required|
|Spill control||Required||Required||Not required||Not required||Not required|
|Neutralization||Required||Required||Required||Not required||Not required|
|Ventilation||Required||Required||Required||Not required||Not required|
This section has been amended at the state or city level.
Vented lead-acid, nickel-cadmium, or other types of nonrecombinant batteries shall be provided with safety venting caps.
VRLA or other types of sealed, recombinant batteries shall be equipped with self-resealing flame-arresting safety vents.
Battery systems shall be housed in a noncombustible, locked cabinet or other enclosure to prevent access by unauthorized personnel unless located in a separate equipment room accessible only to authorized personnel.
In other than assembly, educational, detention and correction facilities, health care, ambulatory health care, day care centers, residential board and care, and residential occupancies, 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, day care centers, residential board and care, and residential occupancies, battery systems shall be located in a room separated from other portions of the building by a minimum of a 2-hour fire barrier.
Rooms, buildings, or areas containing free-flowing liquid electrolyte in individual vessels having a capacity of more than 55 gal (208 L) or multiple vessels having an aggregate capacity exceeding 1000 gal (3785 L) shall be provided with spill control to prevent the flow of liquids to adjoining areas.
VRLA, lithium-ion, lithium metal polymer, or other types of sealed batteries with immobilized electrolyte shall not require spill control.
For nonrecombinant batteries and VRLA batteries, the method shall be capable of neutralizing a spill from the largest battery to a pH between 7.0 and 9.0.
For flooded lead-acid, flooded nickelcadmium, and VRLA batteries, ventilation shall be provided for rooms and cabinets in accordance with the mechanical code and one of the following:
- The ventilation system shall be designed to limit the maximum concentration of hydrogen to 1.0 percent of the total volume of the room during the worst-case event of simultaneous "boost" charging of all the batteries, in accordance with nationally recognized standards.
- Continuous ventilation shall be provided at a rate of not less than 1 ft3/min/ft2 (5,1 L/sec/m2) of floor area of the room or cabinet.
The battery environment shall be controlled or analyzed to maintain temperature in a safe operating range for the specific battery technology used.
Signs shall be provided within battery cabinets to indicate the relevant electrical, chemical, and fire hazard.
In seismically active areas, battery systems shall be seismically braced in accordance with the building code.