{
  "schema_version": "1.0",
  "title": "Intermittent weak seals on accessory pouches",
  "synthetic": true,
  "format_note": "Neutral example-data structure for developer use, not an app-native import or export format.",
  "description": "A packaging team has logged intermittent weak seals on one accessory-pouch line. Production, maintenance, quality, materials, and facilities representatives organize possible explanations before deciding what evidence to collect. The example groups hypotheses under People, Equipment, Methods, Materials, Measurement, and Environment. Linked records capture planned investigations, evidence-gathering actions, evidence requests, and discussion comments. The snapshot contains no confirmed root cause or completed investigation findings.",
  "root_node_id": "FB001",
  "nodes": [
    {
      "node_id": "FB001",
      "parent_id": null,
      "node_type": "effect",
      "label": "Intermittent weak seals on accessory pouches",
      "category": null,
      "hypothesis_status": null,
      "owner_role": "Quality lead",
      "sort_order": 1
    },
    {
      "node_id": "CAT01",
      "parent_id": "FB001",
      "node_type": "category",
      "label": "People",
      "category": "People",
      "hypothesis_status": null,
      "owner_role": "Production supervisor",
      "sort_order": 1
    },
    {
      "node_id": "C0101",
      "parent_id": "CAT01",
      "node_type": "cause",
      "label": "Different interpretations of seal acceptance",
      "category": "People",
      "hypothesis_status": "untested",
      "owner_role": "Production supervisor",
      "sort_order": 1
    },
    {
      "node_id": "C0101S1",
      "parent_id": "C0101",
      "node_type": "subcause",
      "label": "Reference photos may omit borderline weak seals",
      "category": "People",
      "hypothesis_status": "untested",
      "owner_role": "Production supervisor",
      "sort_order": 1
    },
    {
      "node_id": "C0101S2",
      "parent_id": "C0101",
      "node_type": "subcause",
      "label": "Refresher coaching may not reach relief staff",
      "category": "People",
      "hypothesis_status": "untested",
      "owner_role": "Production supervisor",
      "sort_order": 2
    },
    {
      "node_id": "C0102",
      "parent_id": "CAT01",
      "node_type": "cause",
      "label": "Changeover handoff gaps",
      "category": "People",
      "hypothesis_status": "untested",
      "owner_role": "Production supervisor",
      "sort_order": 2
    },
    {
      "node_id": "C0102S1",
      "parent_id": "C0102",
      "node_type": "subcause",
      "label": "Handoff record may omit jaw adjustments",
      "category": "People",
      "hypothesis_status": "untested",
      "owner_role": "Production supervisor",
      "sort_order": 1
    },
    {
      "node_id": "C0102S2",
      "parent_id": "C0102",
      "node_type": "subcause",
      "label": "Open changeover questions may lack assigned follow-up",
      "category": "People",
      "hypothesis_status": "untested",
      "owner_role": "Production supervisor",
      "sort_order": 2
    },
    {
      "node_id": "CAT02",
      "parent_id": "FB001",
      "node_type": "category",
      "label": "Equipment",
      "category": "Equipment",
      "hypothesis_status": null,
      "owner_role": "Maintenance technician",
      "sort_order": 2
    },
    {
      "node_id": "C0201",
      "parent_id": "CAT02",
      "node_type": "cause",
      "label": "Uneven jaw contact",
      "category": "Equipment",
      "hypothesis_status": "untested",
      "owner_role": "Maintenance technician",
      "sort_order": 1
    },
    {
      "node_id": "C0201S1",
      "parent_id": "C0201",
      "node_type": "subcause",
      "label": "Jaw alignment may drift between checks",
      "category": "Equipment",
      "hypothesis_status": "untested",
      "owner_role": "Maintenance technician",
      "sort_order": 1
    },
    {
      "node_id": "C0201S2",
      "parent_id": "C0201",
      "node_type": "subcause",
      "label": "Sealing-pad wear may change contact pressure",
      "category": "Equipment",
      "hypothesis_status": "untested",
      "owner_role": "Maintenance technician",
      "sort_order": 2
    },
    {
      "node_id": "C0202",
      "parent_id": "CAT02",
      "node_type": "cause",
      "label": "Temperature at the seal may differ from the display",
      "category": "Equipment",
      "hypothesis_status": "untested",
      "owner_role": "Maintenance technician",
      "sort_order": 2
    },
    {
      "node_id": "C0202S1",
      "parent_id": "C0202",
      "node_type": "subcause",
      "label": "Sensor position may not represent the contact surface",
      "category": "Equipment",
      "hypothesis_status": "untested",
      "owner_role": "Maintenance technician",
      "sort_order": 1
    },
    {
      "node_id": "C0202S2",
      "parent_id": "C0202",
      "node_type": "subcause",
      "label": "Heater output may vary between the jaw edge and center",
      "category": "Equipment",
      "hypothesis_status": "untested",
      "owner_role": "Maintenance technician",
      "sort_order": 2
    },
    {
      "node_id": "CAT03",
      "parent_id": "FB001",
      "node_type": "category",
      "label": "Methods",
      "category": "Methods",
      "hypothesis_status": null,
      "owner_role": "Process engineer",
      "sort_order": 3
    },
    {
      "node_id": "C0301",
      "parent_id": "CAT03",
      "node_type": "cause",
      "label": "Startup sequence may vary",
      "category": "Methods",
      "hypothesis_status": "untested",
      "owner_role": "Process engineer",
      "sort_order": 1
    },
    {
      "node_id": "C0301S1",
      "parent_id": "C0301",
      "node_type": "subcause",
      "label": "Warm-up release may omit a surface-temperature check",
      "category": "Methods",
      "hypothesis_status": "untested",
      "owner_role": "Process engineer",
      "sort_order": 1
    },
    {
      "node_id": "C0301S2",
      "parent_id": "C0301",
      "node_type": "subcause",
      "label": "First-off sampling may occur at different startup stages",
      "category": "Methods",
      "hypothesis_status": "untested",
      "owner_role": "Process engineer",
      "sort_order": 2
    },
    {
      "node_id": "C0302",
      "parent_id": "CAT03",
      "node_type": "cause",
      "label": "Parameter changes may not be traceable",
      "category": "Methods",
      "hypothesis_status": "untested",
      "owner_role": "Process engineer",
      "sort_order": 2
    },
    {
      "node_id": "C0302S1",
      "parent_id": "C0302",
      "node_type": "subcause",
      "label": "Temporary adjustments may remain outside the change log",
      "category": "Methods",
      "hypothesis_status": "untested",
      "owner_role": "Process engineer",
      "sort_order": 1
    },
    {
      "node_id": "C0302S2",
      "parent_id": "C0302",
      "node_type": "subcause",
      "label": "Operators may encounter different recipe revisions",
      "category": "Methods",
      "hypothesis_status": "untested",
      "owner_role": "Process engineer",
      "sort_order": 2
    },
    {
      "node_id": "CAT04",
      "parent_id": "FB001",
      "node_type": "category",
      "label": "Materials",
      "category": "Materials",
      "hypothesis_status": null,
      "owner_role": "Materials engineer",
      "sort_order": 4
    },
    {
      "node_id": "C0401",
      "parent_id": "CAT04",
      "node_type": "cause",
      "label": "Sealing-layer properties may vary",
      "category": "Materials",
      "hypothesis_status": "untested",
      "owner_role": "Materials engineer",
      "sort_order": 1
    },
    {
      "node_id": "C0401S1",
      "parent_id": "C0401",
      "node_type": "subcause",
      "label": "Film lots may differ in sealing-layer thickness",
      "category": "Materials",
      "hypothesis_status": "untested",
      "owner_role": "Materials engineer",
      "sort_order": 1
    },
    {
      "node_id": "C0401S2",
      "parent_id": "C0401",
      "node_type": "subcause",
      "label": "Supplier material changes may not be linked to incoming checks",
      "category": "Materials",
      "hypothesis_status": "untested",
      "owner_role": "Materials engineer",
      "sort_order": 2
    },
    {
      "node_id": "C0402",
      "parent_id": "CAT04",
      "node_type": "cause",
      "label": "Seal area may contain contamination",
      "category": "Materials",
      "hypothesis_status": "untested",
      "owner_role": "Materials engineer",
      "sort_order": 2
    },
    {
      "node_id": "C0402S1",
      "parent_id": "C0402",
      "node_type": "subcause",
      "label": "Product dust may remain near the pouch mouth",
      "category": "Materials",
      "hypothesis_status": "untested",
      "owner_role": "Materials engineer",
      "sort_order": 1
    },
    {
      "node_id": "C0402S2",
      "parent_id": "C0402",
      "node_type": "subcause",
      "label": "Handling contact may transfer residue to the seal area",
      "category": "Materials",
      "hypothesis_status": "untested",
      "owner_role": "Materials engineer",
      "sort_order": 2
    },
    {
      "node_id": "CAT05",
      "parent_id": "FB001",
      "node_type": "category",
      "label": "Measurement",
      "category": "Measurement",
      "hypothesis_status": null,
      "owner_role": "Laboratory technician",
      "sort_order": 5
    },
    {
      "node_id": "C0501",
      "parent_id": "CAT05",
      "node_type": "cause",
      "label": "Peel-test conditions may vary",
      "category": "Measurement",
      "hypothesis_status": "untested",
      "owner_role": "Laboratory technician",
      "sort_order": 1
    },
    {
      "node_id": "C0501S1",
      "parent_id": "C0501",
      "node_type": "subcause",
      "label": "Test-strip width may vary during preparation",
      "category": "Measurement",
      "hypothesis_status": "untested",
      "owner_role": "Laboratory technician",
      "sort_order": 1
    },
    {
      "node_id": "C0501S2",
      "parent_id": "C0501",
      "node_type": "subcause",
      "label": "Pull speed may differ between saved test methods",
      "category": "Measurement",
      "hypothesis_status": "untested",
      "owner_role": "Laboratory technician",
      "sort_order": 2
    },
    {
      "node_id": "C0502",
      "parent_id": "CAT05",
      "node_type": "cause",
      "label": "Test-equipment condition may influence readings",
      "category": "Measurement",
      "hypothesis_status": "untested",
      "owner_role": "Laboratory technician",
      "sort_order": 2
    },
    {
      "node_id": "C0502S1",
      "parent_id": "C0502",
      "node_type": "subcause",
      "label": "Force verification may not cover the working range",
      "category": "Measurement",
      "hypothesis_status": "untested",
      "owner_role": "Laboratory technician",
      "sort_order": 1
    },
    {
      "node_id": "C0502S2",
      "parent_id": "C0502",
      "node_type": "subcause",
      "label": "Specimens may slip in the grips",
      "category": "Measurement",
      "hypothesis_status": "untested",
      "owner_role": "Laboratory technician",
      "sort_order": 2
    },
    {
      "node_id": "CAT06",
      "parent_id": "FB001",
      "node_type": "category",
      "label": "Environment",
      "category": "Environment",
      "hypothesis_status": null,
      "owner_role": "Facilities coordinator",
      "sort_order": 6
    },
    {
      "node_id": "C0601",
      "parent_id": "CAT06",
      "node_type": "cause",
      "label": "Local drafts may cool the sealing area",
      "category": "Environment",
      "hypothesis_status": "untested",
      "owner_role": "Facilities coordinator",
      "sort_order": 1
    },
    {
      "node_id": "C0601S1",
      "parent_id": "C0601",
      "node_type": "subcause",
      "label": "Extraction airflow may cross the jaw surface",
      "category": "Environment",
      "hypothesis_status": "untested",
      "owner_role": "Facilities coordinator",
      "sort_order": 1
    },
    {
      "node_id": "C0601S2",
      "parent_id": "C0601",
      "node_type": "subcause",
      "label": "Loading-door opening may change local airflow",
      "category": "Environment",
      "hypothesis_status": "untested",
      "owner_role": "Facilities coordinator",
      "sort_order": 2
    },
    {
      "node_id": "C0602",
      "parent_id": "CAT06",
      "node_type": "cause",
      "label": "Ambient conditions may affect film preparation",
      "category": "Environment",
      "hypothesis_status": "untested",
      "owner_role": "Facilities coordinator",
      "sort_order": 2
    },
    {
      "node_id": "C0602S1",
      "parent_id": "C0602",
      "node_type": "subcause",
      "label": "Humidity near the line may not be logged",
      "category": "Environment",
      "hypothesis_status": "untested",
      "owner_role": "Facilities coordinator",
      "sort_order": 1
    },
    {
      "node_id": "C0602S2",
      "parent_id": "C0602",
      "node_type": "subcause",
      "label": "Film-roll conditioning time may vary by storage location",
      "category": "Environment",
      "hypothesis_status": "untested",
      "owner_role": "Facilities coordinator",
      "sort_order": 2
    }
  ],
  "investigations": [
    {
      "investigation_id": "INV01",
      "node_id": "C0101",
      "question": "How consistently are borderline seals classified?",
      "scope": "Compare independent classifications of a common set of retained examples.",
      "owner_role": "Production supervisor",
      "status": "planned"
    },
    {
      "investigation_id": "INV02",
      "node_id": "C0201",
      "question": "Does contact pressure vary across the jaw?",
      "scope": "Document contact distribution at fixed settings before making adjustments.",
      "owner_role": "Maintenance technician",
      "status": "planned"
    },
    {
      "investigation_id": "INV03",
      "node_id": "C0301",
      "question": "Is the startup release sequence consistent?",
      "scope": "Compare recorded startup steps and timing for several changeovers.",
      "owner_role": "Process engineer",
      "status": "planned"
    },
    {
      "investigation_id": "INV04",
      "node_id": "C0401",
      "question": "Are film-lot properties comparable?",
      "scope": "Link lot identifiers with available incoming and supplier material records.",
      "owner_role": "Materials engineer",
      "status": "planned"
    },
    {
      "investigation_id": "INV05",
      "node_id": "C0501",
      "question": "Are peel-test conditions comparable?",
      "scope": "Compare strip preparation, method revision, and pull-speed records.",
      "owner_role": "Laboratory technician",
      "status": "planned"
    },
    {
      "investigation_id": "INV06",
      "node_id": "C0601",
      "question": "Does local airflow change near the jaw?",
      "scope": "Document airflow around the sealing area under routine door and extraction conditions.",
      "owner_role": "Facilities coordinator",
      "status": "planned"
    }
  ],
  "actions": [
    {
      "action_id": "ACT01",
      "investigation_id": "INV01",
      "node_id": "C0101",
      "action": "Gather a shared set of seal examples and record independent classifications.",
      "owner_role": "Production supervisor",
      "status": "planned",
      "priority": "normal"
    },
    {
      "action_id": "ACT02",
      "investigation_id": "INV02",
      "node_id": "C0201",
      "action": "Arrange a jaw-contact check and preserve the original check record.",
      "owner_role": "Maintenance technician",
      "status": "planned",
      "priority": "normal"
    },
    {
      "action_id": "ACT03",
      "investigation_id": "INV03",
      "node_id": "C0301",
      "action": "Collect changeover records and document the sequence used during observed startups.",
      "owner_role": "Process engineer",
      "status": "planned",
      "priority": "normal"
    },
    {
      "action_id": "ACT04",
      "investigation_id": "INV04",
      "node_id": "C0401",
      "action": "Assemble lot-level material records and retain identifiers for sampled pouches.",
      "owner_role": "Materials engineer",
      "status": "planned",
      "priority": "normal"
    },
    {
      "action_id": "ACT05",
      "investigation_id": "INV05",
      "node_id": "C0501",
      "action": "Collect test-method revisions and document strip preparation on a shared sample.",
      "owner_role": "Laboratory technician",
      "status": "planned",
      "priority": "normal"
    },
    {
      "action_id": "ACT06",
      "investigation_id": "INV06",
      "node_id": "C0601",
      "action": "Plan local airflow observations without changing normal production settings.",
      "owner_role": "Facilities coordinator",
      "status": "planned",
      "priority": "normal"
    }
  ],
  "evidence_requests": [
    {
      "evidence_id": "EV01",
      "investigation_id": "INV01",
      "node_id": "C0101",
      "evidence_type": "classification_record",
      "description": "Independent classifications of a common set of seal examples.",
      "status": "requested",
      "artifact_path": null
    },
    {
      "evidence_id": "EV02",
      "investigation_id": "INV02",
      "node_id": "C0201",
      "evidence_type": "contact_check_record",
      "description": "Jaw-contact check record showing position, settings, and check method.",
      "status": "requested",
      "artifact_path": null
    },
    {
      "evidence_id": "EV03",
      "investigation_id": "INV03",
      "node_id": "C0301",
      "evidence_type": "startup_observation_log",
      "description": "Startup sequence, warm-up timing, and first-off sampling records.",
      "status": "requested",
      "artifact_path": null
    },
    {
      "evidence_id": "EV04",
      "investigation_id": "INV04",
      "node_id": "C0401",
      "evidence_type": "material_lot_record",
      "description": "Incoming material records and supplier declarations linked to film-lot identifiers.",
      "status": "requested",
      "artifact_path": null
    },
    {
      "evidence_id": "EV05",
      "investigation_id": "INV05",
      "node_id": "C0501",
      "evidence_type": "test_method_record",
      "description": "Peel-test method revision, strip-width record, and pull-speed setting.",
      "status": "requested",
      "artifact_path": null
    },
    {
      "evidence_id": "EV06",
      "investigation_id": "INV06",
      "node_id": "C0601",
      "evidence_type": "airflow_observation_log",
      "description": "Local airflow observations with door state and extraction settings.",
      "status": "requested",
      "artifact_path": null
    }
  ],
  "comments": [
    {
      "comment_id": "COM01",
      "investigation_id": "INV01",
      "node_id": "C0101",
      "author_role": "Quality lead",
      "comment": "Keep clear-cut and borderline examples identifiable without treating either group as a causal finding."
    },
    {
      "comment_id": "COM02",
      "investigation_id": "INV02",
      "node_id": "C0201",
      "author_role": "Quality lead",
      "comment": "Record jaw position and settings with each contact check; avoid adjustments before the initial record."
    },
    {
      "comment_id": "COM03",
      "investigation_id": "INV03",
      "node_id": "C0301",
      "author_role": "Quality lead",
      "comment": "Separate startup and steady-state observations when organizing the records."
    },
    {
      "comment_id": "COM04",
      "investigation_id": "INV04",
      "node_id": "C0401",
      "author_role": "Quality lead",
      "comment": "A change in lot identifier alone would not establish that film properties caused the weak seals."
    },
    {
      "comment_id": "COM05",
      "investigation_id": "INV05",
      "node_id": "C0501",
      "author_role": "Quality lead",
      "comment": "Preserve individual test records rather than replacing them with an unsupported summary."
    },
    {
      "comment_id": "COM06",
      "investigation_id": "INV06",
      "node_id": "C0601",
      "author_role": "Quality lead",
      "comment": "Record contextual conditions without concluding that simultaneous changes demonstrate causation."
    }
  ]
}