{
  "metadata": {
    "schema_version": "2.0",
    "package_version": "2.0.0-rc1",
    "publication_status": "verified_public_proof_reference",
    "generated_date": "2026-07-28",
    "last_verified": "2026-07-17",
    "confidence": "A2",
    "public_safe": true,
    "confidential_fields_excluded": true,
    "source_package": "Depureco USA public knowledge source package v33",
    "json_path": "/ai/proof/case-studies/case-study-centralized-vacuum-system-for-welding-fumes-2.json",
    "markdown_path": "/ai/proof/case-studies/case-study-centralized-vacuum-system-for-welding-fumes-2.md"
  },
  "reference": {
    "entity_id": "PROOF-CASE-case-study-centralized-vacuum-system-for-welding-fumes-2",
    "entity_type": "proof_asset",
    "name": "Case Study: Centralized Vacuum System for Welding Fumes",
    "human_route": "https://depurecousa.com/depureco-contact-us/",
    "human_route_status": "available"
  },
  "content": {
    "entity": {
      "proof_id": "PROOF-CASE-case-study-centralized-vacuum-system-for-welding-fumes-2",
      "proof_type": "case_study",
      "title": "Case Study: Centralized Vacuum System for Welding Fumes",
      "slug": "case-study-centralized-vacuum-system-for-welding-fumes-2",
      "source_url": "https://depurecousa.com/blog/case-study-centralized-vacuum-system-for-welding-fumes-2/",
      "human_page_url": "https://depurecousa.com/blog/case-study-centralized-vacuum-system-for-welding-fumes-2/",
      "published_or_verified_date": "2026-03-03",
      "source_authority": "Published Depureco USA first-party case study",
      "evidence_grade": "A2",
      "evidence_scope": "Customer/application case study",
      "material_or_subject": "MF-13",
      "application_or_process": "welding-fume-source-capture",
      "market_or_industry": "metal-fabrication-welding; central-vacuum-systems-multi-point-plants",
      "product_or_system": "PUMA FIX 10",
      "setup_or_configuration": "CASE STUDY Centralized Vacuum System for Welding Fumes in a Metalworking Plant In any metalworking shop, welding torches generate a continuous stream of welding fumes carrying hazardous particles and gases. These fumes often contain heavy metals and other substances that can cause respiratory problems and long-term health issues if they are not properly extracted. For a plant with multiple welding stations, relying on a few portable fume extractors or partial ventilation is not enough. Fumes can spread across the production area, exposing workers outside the immediate welding zone and making it harder to meet regulatory limits. This case study shows how Depureco designed a centralized welding fume extraction system with a PUMA FIX 10 central vacuum unit to improve air quality, protect welders, and keep a metalworking plant compliant and under control. Customer Profile & Application The c",
      "observed_result": "Documents centralized source capture from multiple welding stations using a PUMA FIX system.",
      "claim_boundary": "The case study supports system architecture, not a universal exposure-control guarantee.",
      "related_entity_ids": [
        "PRD-puma-fix-10-a592",
        "MKT-m2",
        "MKT-m20"
      ],
      "related_lane_ids": [
        "LANE-02",
        "LANE-20"
      ],
      "related_material_family_ids": [
        "MF-13"
      ],
      "schema_type": "Article",
      "source_evidence": "WordPress WXR 2026-07-14"
    },
    "outgoing_relationships": [
      {
        "relationship_id": "PRREL-4ecf1e1c9dc0",
        "proof_id": "PROOF-CASE-case-study-centralized-vacuum-system-for-welding-fumes-2",
        "target_entity_id": "PRD-puma-fix-10-a592",
        "target_entity_type": "product",
        "relationship": "documents installed or demonstrated product",
        "confidence": "High",
        "rationale": "PUMA FIX 10",
        "public_eligible": "Yes"
      },
      {
        "relationship_id": "PRREL-5b9d346dc58a",
        "proof_id": "PROOF-CASE-case-study-centralized-vacuum-system-for-welding-fumes-2",
        "target_entity_id": "MKT-m2",
        "target_entity_type": "industry",
        "relationship": "documents market application",
        "confidence": "High",
        "rationale": "Case Study: Centralized Vacuum System for Welding Fumes",
        "public_eligible": "Yes"
      },
      {
        "relationship_id": "PRREL-1773e160359d",
        "proof_id": "PROOF-CASE-case-study-centralized-vacuum-system-for-welding-fumes-2",
        "target_entity_id": "MKT-m20",
        "target_entity_type": "industry",
        "relationship": "documents market application",
        "confidence": "High",
        "rationale": "Case Study: Centralized Vacuum System for Welding Fumes",
        "public_eligible": "Yes"
      },
      {
        "relationship_id": "PRREL-5eb77cdd610a",
        "proof_id": "PROOF-CASE-case-study-centralized-vacuum-system-for-welding-fumes-2",
        "target_entity_id": "LANE-02",
        "target_entity_type": "commercial_lane",
        "relationship": "supports commercial lane",
        "confidence": "High",
        "rationale": "Case Study: Centralized Vacuum System for Welding Fumes",
        "public_eligible": "Yes"
      },
      {
        "relationship_id": "PRREL-f2fa41c53a44",
        "proof_id": "PROOF-CASE-case-study-centralized-vacuum-system-for-welding-fumes-2",
        "target_entity_id": "LANE-20",
        "target_entity_type": "commercial_lane",
        "relationship": "supports commercial lane",
        "confidence": "High",
        "rationale": "Case Study: Centralized Vacuum System for Welding Fumes",
        "public_eligible": "Yes"
      }
    ]
  },
  "support": {
    "unknown_or_unverified_information": {
      "next_best_page": "https://depurecousa.com/depureco-contact-us/",
      "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": "Use this reference for qualification and routing. Final product, compliance, filtration, chemical compatibility, and system design decisions require application review."
  }
}