{
  "node": {
    "id": "term:nfpa-855",
    "type": "Term",
    "label": "NFPA 855",
    "properties": {
      "id": "nfpa-855",
      "name": "NFPA 855",
      "section": "topic-standards-stationary",
      "definition": "The US fire-protection standard for the installation of stationary energy storage systems: spacing between units, maximum energy per fire area, suppression, explosion control and the UL 9540A data needed to deviate from the defaults.",
      "related": [
        "ul-9540a",
        "stationary-storage",
        "fire-suppression",
        "ul-9540",
        "nfpa-70-706"
      ],
      "url": "https://lemonergy.com/learn/glossary/nfpa-855/",
      "mentions": []
    }
  },
  "edges": [
    {
      "id": "edge:3816",
      "source": "term:nfpa-855",
      "target": "topic:topic-standards-stationary",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:3817",
      "source": "term:nfpa-855",
      "target": "term:ul-9540a",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:3818",
      "source": "term:nfpa-855",
      "target": "term:stationary-storage",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:3819",
      "source": "term:nfpa-855",
      "target": "term:fire-suppression",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:3820",
      "source": "term:nfpa-855",
      "target": "term:ul-9540",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:3821",
      "source": "term:nfpa-855",
      "target": "term:nfpa-70-706",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    }
  ],
  "neighbors": [
    {
      "id": "topic:topic-standards-stationary",
      "type": "Topic",
      "label": "Stationary, industrial and product standards",
      "properties": {
        "id": "topic-standards-stationary",
        "name": "Stationary, industrial and product standards",
        "lede": "Safety and performance standards for portable, industrial and grid batteries, their electronics and their installation.",
        "context": "Match scope to product and installation.",
        "example": "A cell-level test does not establish fire performance or commissioning requirements for a complete installation.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/battery-basics/",
        "lesson_label": "Open battery basics"
      }
    },
    {
      "id": "term:ul-9540a",
      "type": "Term",
      "label": "UL 9540A",
      "properties": {
        "id": "ul-9540a",
        "name": "UL 9540A",
        "section": "topic-standards-stationary",
        "definition": "A test method, not a pass/fail standard, that characterises thermal runaway and propagation in stationary storage at cell, module, unit and installation level. Fire codes use its data to decide spacing and suppression for a storage site.",
        "related": [
          "thermal-propagation",
          "stationary-storage",
          "fire-suppression",
          "propagation-test",
          "nfpa-855"
        ],
        "url": "https://lemonergy.com/learn/glossary/ul-9540a/",
        "mentions": [
          "thermal-runaway"
        ]
      }
    },
    {
      "id": "term:stationary-storage",
      "type": "Term",
      "label": "Stationary storage",
      "properties": {
        "id": "stationary-storage",
        "name": "Stationary storage",
        "abbr": "BESS",
        "aka": [
          "battery energy storage system",
          "ESS"
        ],
        "section": "topic-applications",
        "definition": "Batteries installed in a fixed place — a container at a solar farm, a cabinet in a home — to shift energy in time or support the grid. LFP cells dominate because cost per cycle and safety matter more than mass.",
        "related": [
          "lfp",
          "energy-management-system",
          "inverter",
          "energy-arbitrage",
          "long-duration-storage",
          "ul-9540a"
        ],
        "url": "https://lemonergy.com/learn/glossary/stationary-storage/",
        "mentions": []
      }
    },
    {
      "id": "term:fire-suppression",
      "type": "Term",
      "label": "Fire suppression",
      "properties": {
        "id": "fire-suppression",
        "name": "Fire suppression",
        "section": "topic-safety",
        "definition": "Systems that cool or smother a battery fire: water mist and flooding for cooling, inert gas or aerosol for enclosed storage containers. Because the cell makes its own oxygen, suppression mainly limits spread and cools neighbours rather than extinguishing the failing cell.",
        "related": [
          "flammability",
          "thermal-propagation",
          "gas-detection",
          "stationary-storage",
          "firefighter-access"
        ],
        "url": "https://lemonergy.com/learn/glossary/fire-suppression/",
        "mentions": []
      }
    },
    {
      "id": "term:ul-9540",
      "type": "Term",
      "label": "UL 9540",
      "properties": {
        "id": "ul-9540",
        "name": "UL 9540",
        "section": "topic-standards-stationary",
        "definition": "The North American product safety standard for a complete energy storage system — battery, inverter and controls together — as opposed to UL 9540A, which is the test method for its thermal-runaway behaviour. Listing to UL 9540 is what most US fire codes require for installation.",
        "related": [
          "ul-9540a",
          "nfpa-855",
          "stationary-storage",
          "inverter",
          "pas-63100"
        ],
        "url": "https://lemonergy.com/learn/glossary/ul-9540/",
        "mentions": []
      }
    },
    {
      "id": "term:nfpa-70-706",
      "type": "Term",
      "label": "NFPA 70 Article 706",
      "properties": {
        "id": "nfpa-70-706",
        "name": "NFPA 70 Article 706",
        "aka": [
          "NEC Article 706",
          "National Electrical Code",
          "NFPA 13",
          "NFPA 72"
        ],
        "section": "topic-standards-stationary",
        "definition": "The article of the US National Electrical Code for permanently installed energy storage systems above 50 V AC or 60 V DC, introduced in 2017: disconnecting means, ground-fault detection, battery location, ventilation and working space. Alongside it, NFPA 855 calls for detection to NFPA 72 and sprinklers to NFPA 13 at 0.3 gpm/ft², unless large-scale UL 9540A tests justify another density.",
        "related": [
          "nfpa-855",
          "ul-9540",
          "ul-9540a",
          "fire-suppression",
          "stationary-storage"
        ],
        "url": "https://lemonergy.com/learn/glossary/nfpa-70-706/",
        "mentions": []
      }
    }
  ]
}