As appropriate to the energy storage technology, provisions shall be made for sufficient ___ of any possible gases from the storage device, if present, to prevent the accumulation of an explosive mixture.

As appropriate to the energy storage technology, provisions shall be made for sufficient ___ of any possible gases from the storage device, if present, to prevent the accumulation of an explosive mixture.

• A. Diffusion
• B. Ventilation
• C. Both A and B
• D. Neither A nor B

Answer: (C)

Gas released from energy storage devices can form an explosive mixture if it accumulates in a confined space. To prevent that, provisions must allow the gas to move and be diluted—active ventilation to remove it from the area, and diffusion, the natural spreading of gas, to avoid local pockets of high concentration. Ventilation provides an air exchange that carries away flammable gases, reducing their concentration. Diffusion helps distribute any released gas, but relying on diffusion alone doesn’t reliably prevent dangerous buildup, especially in larger or poorly ventilated spaces. By addressing both ventilation and diffusion, the design reduces the risk of explosive mixtures across different storage technologies. Follow the applicable codes and standards for how these provisions are implemented.

Gas released from energy storage devices can form an explosive mixture if it accumulates in a confined space. To prevent that, provisions must allow the gas to move and be diluted—active ventilation to remove it from the area, and diffusion, the natural spreading of gas, to avoid local pockets of high concentration. Ventilation provides an air exchange that carries away flammable gases, reducing their concentration. Diffusion helps distribute any released gas, but relying on diffusion alone doesn’t reliably prevent dangerous buildup, especially in larger or poorly ventilated spaces. By addressing both ventilation and diffusion, the design reduces the risk of explosive mixtures across different storage technologies. Follow the applicable codes and standards for how these provisions are implemented.