{
  "version": "burst-simulation-design@1",
  "suite_id": "tjwater2-v2-burst-calibration",
  "project_code": "tjwater2_v2",
  "project_id": "871d7538-589c-47de-a6d5-3185ccb9f0e1",
  "model_expectations": {
    "node_count": 92392,
    "pipe_count": 91049,
    "valve_count": 4489,
    "flow_unit": "LPS",
    "pressure_unit": "METERS",
    "pressure_measurement_unit": "m",
    "flow_measurement_unit": "m3/h",
    "emitter_exponent": 0.5,
    "hydraulic_timestep_seconds": 900,
    "report_timestep_seconds": 900
  },
  "duration_seconds": 3600,
  "event_times": [
    "2026-10-08T02:00:00+08:00",
    "2026-10-08T12:00:00+08:00"
  ],
  "severity_levels": [
    {"level": "light", "cross_section_fraction": 0.03125},
    {"level": "medium", "cross_section_fraction": 0.0625},
    {"level": "severe", "cross_section_fraction": 0.125}
  ],
  "calibration_order": ["severe", "medium", "light"],
  "selection_rule": {
    "primary_pressure_drop_percent": 30,
    "corroborating_pressure_drop_percent": 10,
    "flow_change_percent": 20,
    "consecutive_samples": 2,
    "expected_sample_count": 5,
    "relative_change_epsilon": 0.000001,
    "normal_control_must_not_trigger": true,
    "negative_monitor_pressure_allowed": false,
    "choose_smallest_passing_area": true
  },
  "binding_validation": {
    "max_pressure_distance_m": 1.0,
    "max_flow_distance_m": 1.0
  },
  "cases": [
    {"case_id": "B01", "pipe_id": "541720", "occurred_at": "2026-10-08T02:00:00+08:00"},
    {"case_id": "B02", "pipe_id": "541720", "occurred_at": "2026-10-08T12:00:00+08:00"},
    {"case_id": "B03", "pipe_id": "520323", "occurred_at": "2026-10-08T02:00:00+08:00"},
    {"case_id": "B04", "pipe_id": "520323", "occurred_at": "2026-10-08T12:00:00+08:00"}
  ],
  "pipes": [
    {
      "role": "primary",
      "pipe_id": "541720",
      "diameter_mm": 800,
      "length_m": 483.038,
      "start_node_id": "532586",
      "emitter_node_id": "502046",
      "longitude": 121.483586,
      "latitude": 30.996219,
      "candidate_orifice_areas_cm2": {
        "light": 157.079633,
        "medium": 314.159265,
        "severe": 628.318531
      },
      "pressure_bindings": [
        {"device_id": "447382", "node_id": "7543252226207002012"},
        {"device_id": "444985", "node_id": "14141146287589625673"},
        {"device_id": "100026", "node_id": "100026"},
        {"device_id": "115039", "node_id": "115039"},
        {"device_id": "107672", "node_id": "107672"}
      ],
      "flow_bindings": [
        {"device_id": "542121", "link_id": "pipe-eaa5c512bd8f4649b37bdbe3d"},
        {"device_id": "449417", "link_id": "449417"},
        {"device_id": "516234", "link_id": "516234"}
      ],
      "boundary_valve_ids": [
        "valve-6fd58ab5b5714fbab738a544",
        "valve-8aea6a1876d8475b9f35a845"
      ],
      "output_node_ids": [
        "12290448554375617026", "1371402016460607520", "400946", "413270",
        "414851", "465564", "466633", "482531", "493166", "502046",
        "532586", "7543252226207002012", "14141146287589625673",
        "100026", "115039", "107672"
      ],
      "output_link_ids": [
        "541720", "pipe-eaa5c512bd8f4649b37bdbe3d", "449417", "516234",
        "valve-6fd58ab5b5714fbab738a544",
        "valve-8aea6a1876d8475b9f35a845"
      ]
    },
    {
      "role": "secondary",
      "pipe_id": "520323",
      "diameter_mm": 300,
      "length_m": 33.5951,
      "start_node_id": "91054",
      "emitter_node_id": "91055",
      "longitude": 121.468305,
      "latitude": 30.932363,
      "candidate_orifice_areas_cm2": {
        "light": 22.089323,
        "medium": 44.178647,
        "severe": 88.357293
      },
      "pressure_bindings": [
        {"device_id": "91100", "node_id": "91100"},
        {"device_id": "98367", "node_id": "98367"},
        {"device_id": "69693", "node_id": "69693"},
        {"device_id": "78085", "node_id": "78085"},
        {"device_id": "105833", "node_id": "105833"}
      ],
      "flow_bindings": [
        {"device_id": "527865", "link_id": "527865"},
        {"device_id": "489082", "link_id": "489082"},
        {"device_id": "531564", "link_id": "531564"}
      ],
      "boundary_valve_ids": [
        "valve-18b95b02a7564e7dac737102",
        "valve-3a8fd38228d74583a08b00d9",
        "valve-3b453e4e901049d1a1346689",
        "valve-ad39de2f15f24ade9d18c836",
        "valve-fc1164434a954f418a6f11d6"
      ],
      "output_node_ids": ["91054", "91055", "91100", "98367", "69693", "78085", "105833"],
      "output_link_ids": [
        "520323", "527865", "489082", "531564",
        "valve-18b95b02a7564e7dac737102",
        "valve-3a8fd38228d74583a08b00d9",
        "valve-3b453e4e901049d1a1346689",
        "valve-ad39de2f15f24ade9d18c836",
        "valve-fc1164434a954f418a6f11d6"
      ]
    }
  ]
}