{
  "name": "CSB Chemical Incident",
  "description": "The structure of a CSB chemical incident record, representing an accident investigated by or reported to the US Chemical Safety and Hazard Investigation Board",
  "fields": [
    {
      "name": "incidentId",
      "type": "string",
      "description": "Unique CSB identifier for the incident",
      "required": true
    },
    {
      "name": "incidentDate",
      "type": "date",
      "description": "Date the incident occurred",
      "required": true
    },
    {
      "name": "incidentTime",
      "type": "time",
      "description": "Local time of incident",
      "required": false
    },
    {
      "name": "facilityName",
      "type": "string",
      "description": "Name of the industrial facility where incident occurred",
      "required": true
    },
    {
      "name": "facilityLocation",
      "type": "object",
      "description": "Geographic location of the facility",
      "required": true,
      "fields": [
        {
          "name": "address",
          "type": "string",
          "description": "Street address"
        },
        {
          "name": "city",
          "type": "string",
          "description": "City",
          "required": true
        },
        {
          "name": "state",
          "type": "string",
          "description": "US state abbreviation",
          "required": true
        },
        {
          "name": "zipCode",
          "type": "string",
          "description": "ZIP code"
        },
        {
          "name": "latitude",
          "type": "number",
          "description": "Geographic latitude"
        },
        {
          "name": "longitude",
          "type": "number",
          "description": "Geographic longitude"
        }
      ]
    },
    {
      "name": "facilityType",
      "type": "string",
      "description": "Type of industrial facility (Chemical Plant, Refinery, etc.)",
      "required": false
    },
    {
      "name": "naicsCode",
      "type": "string",
      "description": "NAICS industry classification code",
      "required": false
    },
    {
      "name": "incidentType",
      "type": "string",
      "description": "Type of incident: Explosion, Fire, Chemical Release, Toxic Release, Reactive Incident",
      "required": true
    },
    {
      "name": "chemicalsInvolved",
      "type": "array",
      "description": "Hazardous chemicals involved in the incident",
      "required": false,
      "items": {
        "name": "ChemicalInvolved",
        "type": "object",
        "fields": [
          {
            "name": "chemicalName",
            "type": "string",
            "description": "Common chemical name",
            "required": true
          },
          {
            "name": "casNumber",
            "type": "string",
            "description": "CAS registry number"
          },
          {
            "name": "quantity",
            "type": "number",
            "description": "Estimated quantity released"
          },
          {
            "name": "quantityUnit",
            "type": "string",
            "description": "Unit of measurement (pounds, gallons, tons)"
          },
          {
            "name": "hazardClass",
            "type": "string",
            "description": "OSHA hazard class: Toxic, Flammable, Reactive, Corrosive, Explosive"
          }
        ]
      }
    },
    {
      "name": "casualties",
      "type": "object",
      "description": "Casualties resulting from the incident",
      "required": false,
      "fields": [
        {
          "name": "fatalities",
          "type": "integer",
          "description": "Number of fatalities"
        },
        {
          "name": "injuries",
          "type": "integer",
          "description": "Number of injuries"
        },
        {
          "name": "evacuated",
          "type": "integer",
          "description": "Number of people evacuated"
        },
        {
          "name": "hospitalized",
          "type": "integer",
          "description": "Number hospitalized"
        }
      ]
    },
    {
      "name": "investigationStatus",
      "type": "string",
      "description": "CSB investigation status: Current, Completed, No Investigation",
      "required": false
    },
    {
      "name": "investigationReport",
      "type": "string",
      "description": "URL to CSB investigation report",
      "required": false
    },
    {
      "name": "recommendations",
      "type": "array",
      "description": "Safety recommendations issued",
      "required": false,
      "items": {
        "name": "Recommendation",
        "type": "object",
        "fields": [
          {
            "name": "recommendationNumber",
            "type": "string",
            "description": "CSB recommendation number",
            "required": true
          },
          {
            "name": "recipientOrganization",
            "type": "string",
            "description": "Recipient organization (OSHA, EPA, facility)"
          },
          {
            "name": "description",
            "type": "string",
            "description": "Recommendation text",
            "required": true
          },
          {
            "name": "status",
            "type": "string",
            "description": "Status: Open or Closed"
          },
          {
            "name": "issueDate",
            "type": "date",
            "description": "Date recommendation issued"
          }
        ]
      }
    },
    {
      "name": "rootCauses",
      "type": "array",
      "description": "Root causes identified by CSB investigation",
      "required": false,
      "items": {
        "type": "string"
      }
    },
    {
      "name": "regulatoryNotifications",
      "type": "array",
      "description": "Regulatory agencies notified of the incident",
      "required": false,
      "items": {
        "type": "string"
      }
    }
  ]
}