{
  "metadata": {
    "schema_version": "2.0",
    "package_version": "2.0.0-rc1",
    "publication_status": "verified_public_reference",
    "last_verified": "2026-07-14",
    "generated_date": "2026-07-28",
    "confidence": "High",
    "public_safe": true,
    "confidential_fields_excluded": true,
    "source_package": "Depureco USA public knowledge source package v33",
    "json_path": "/ai/pages/nfpa-660-combustible-dust-housekeeping-review-dust-layers-area-classification-vacuum-selection.json",
    "markdown_path": "/ai/pages/nfpa-660-combustible-dust-housekeeping-review-dust-layers-area-classification-vacuum-selection.md"
  },
  "entity": {
    "entity_id": "PAG-20057",
    "entity_type": "page",
    "name": "NFPA 660 Combustible Dust Housekeeping Review: Dust Layers, Area Classification & Vacuum Selection",
    "slug": "nfpa-660-combustible-dust-housekeeping-review-dust-layers-area-classification-vacuum-selection",
    "canonical_url": "https://depurecousa.com/blog/nfpa-660-combustible-dust-housekeeping-review/",
    "ai_file_path": "/ai/pages/nfpa-660-combustible-dust-housekeeping-review-dust-layers-area-classification-vacuum-selection.md",
    "page_type": "Knowledge Article",
    "source_type": "post",
    "priority": "P0",
    "seo_title": "NFPA 660 Combustible Dust Housekeeping: Layers & Classification",
    "meta_description": "Use this NFPA 660 combustible dust housekeeping review to assess dust layers, area classification, conductive accessories, and vacuum selection.",
    "keyphrases": [
      "combustible dust housekeeping",
      "NFPA 660",
      "combustible dust vacuum",
      "anti static vacuum hose",
      "OSHA combustible dust"
    ],
    "content_length": 36472.0,
    "source_authority": "Current site backup + Yoast",
    "confidence": "High",
    "faq_count": 0,
    "human_route": "https://depurecousa.com/blog/nfpa-660-combustible-dust-housekeeping-review/",
    "human_route_status": "available",
    "publication_status": "verified_public_reference",
    "selection_qualification_required": false
  },
  "public_relationships": [],
  "support": {
    "unknown_or_unverified_information": {
      "next_best_page": "https://depurecousa.com/blog/nfpa-660-combustible-dust-housekeeping-review/",
      "material_testing": "https://depurecousa.com/industrial-vacuum-material-testing/",
      "contact_page": "https://depurecousa.com/depureco-contact-us/",
      "email": "sales@depurecousa.com",
      "phone": "737-320-9102",
      "phone_uri": "tel:+17373209102"
    },
    "selection_rule": "Do not make a final product, filtration, hazardous-location, combustible-dust, chemical-compatibility, or engineered-system selection without the required application inputs and supporting evidence."
  }
}
