The actual document is here. [1] US$56. Here's a useful summary.[2]
"If an installation is outdoors, then it is either classified as remote or near exposures. If an installation is remote, it needs to be 100 feet or more away from any exposures such as other buildings, walkways, or combustible materials. If the installation is not a remote installation, then it is considered to be near exposures. Other acceptable outdoor installations that have specific requirements are rooftops, open parking garages, and standalone walk-in units such as shipping containers."
"Three feet of clear space is required between every 50 KWh grouping of ESS, as well as between the 50 KWh groupings and the walls of the room."
"A sprinkler system is required to be installed ... with a 0.3 gallons-per-minute-per-square-foot density over a 2,500-square-foot design area ... One of the major concerns in extinguishing an ESS fire is cooling the energy storage system down below the auto ignition temperature of the flammable gasses the ESS may discharge in a thermal runaway event. Water is an effective extinguishing agent for most ESS fires including lithium-ion battery ESS, and that is what the committee settled on for a requirement."
So what they're requiring is that units be spaced out enough that one fire doesn't take out the whole installation, and the sprinklers can usually contain the fire to one unit. Tighter restrictions apply if there are "exposures", by which they mostly mean buildings with people in them.
Makes sense. There are similar spacing rules for above ground fuel storage tanks.
This is standard for standards (heh). If you work in the industry, your employer pays for access. Everyone else pays $50-100s a pop or buys a subscription.
Source - I worked for large testing company that also developed and sold standards.
I agree. It's done, ostensibly, to distribute the cost of creating and publishing the standard. This is not being done correctly, access should be generally available to safety standards for reasons of promoting safe practices.
No or very few individuals pay for personal access to standards, it's a business expense paid paid by you or your firm. Allowing non-profit use would not change their main source of revenue.
Reading between the lines a bit, I think they're also recommending that you avoid installing a lithium-ion ESS in the basement of your hotel, or the attached garage in your house... which is a big part of the marketing for these systems.
"If an installation is outdoors, then it is either classified as remote or near exposures. If an installation is remote, it needs to be 100 feet or more away from any exposures such as other buildings, walkways, or combustible materials. If the installation is not a remote installation, then it is considered to be near exposures. Other acceptable outdoor installations that have specific requirements are rooftops, open parking garages, and standalone walk-in units such as shipping containers."
"Three feet of clear space is required between every 50 KWh grouping of ESS, as well as between the 50 KWh groupings and the walls of the room."
"A sprinkler system is required to be installed ... with a 0.3 gallons-per-minute-per-square-foot density over a 2,500-square-foot design area ... One of the major concerns in extinguishing an ESS fire is cooling the energy storage system down below the auto ignition temperature of the flammable gasses the ESS may discharge in a thermal runaway event. Water is an effective extinguishing agent for most ESS fires including lithium-ion battery ESS, and that is what the committee settled on for a requirement."
So what they're requiring is that units be spaced out enough that one fire doesn't take out the whole installation, and the sprinklers can usually contain the fire to one unit. Tighter restrictions apply if there are "exposures", by which they mostly mean buildings with people in them.
Makes sense. There are similar spacing rules for above ground fuel storage tanks.
[1] https://catalog.nfpa.org/NFPA-855-Standard-for-the-Installat...
[2] https://www.nfpa.org/News-and-Research/Publications-and-medi...
Source - I worked for large testing company that also developed and sold standards.
No or very few individuals pay for personal access to standards, it's a business expense paid paid by you or your firm. Allowing non-profit use would not change their main source of revenue.