{
  "title": "圧力放出を防ぐ障壁と事後緩和策を確認",
  "subtitle": "架空サンプル｜高圧配管の定期保全作業",
  "hazard": "高圧配管内に蓄積された流体エネルギー",
  "topEvent": "圧力の制御不能な放出",
  "threats": [
    {
      "id": "TH-01",
      "label": "遮断弁が完全に閉止されていない",
      "preventiveBarriers": [
        { "id": "PB-01-1", "label": "作業前の二者照合", "status": "effective" },
        { "id": "PB-01-2", "label": "弁位置の現場表示", "status": "impaired" }
      ]
    },
    {
      "id": "TH-02",
      "label": "計器の劣化で圧力値を読み誤る",
      "preventiveBarriers": [
        { "id": "PB-02-1", "label": "校正期限の管理", "status": "effective" },
        { "id": "PB-02-2", "label": "独立計器での再確認", "status": "effective" }
      ]
    },
    {
      "id": "TH-03",
      "label": "引継ぎ漏れで系統を誤認する",
      "preventiveBarriers": [
        { "id": "PB-03-1", "label": "系統図とタグの照合", "status": "effective" },
        { "id": "PB-03-2", "label": "交代時の対面引継ぎ", "status": "missing" }
      ]
    }
  ],
  "consequences": [
    {
      "id": "CO-01",
      "label": "作業者が高圧流体に接触する",
      "severity": "severe",
      "mitigativeBarriers": [
        { "id": "MB-01-1", "label": "危険区域の立入制限", "status": "effective" },
        { "id": "MB-01-2", "label": "緊急遮断の手動操作", "status": "effective" }
      ]
    },
    {
      "id": "CO-02",
      "label": "周辺設備が損傷し運転が停止する",
      "severity": "major",
      "mitigativeBarriers": [
        { "id": "MB-02-1", "label": "圧力放出の安全経路", "status": "effective" },
        { "id": "MB-02-2", "label": "予備設備への切替手順", "status": "impaired" }
      ]
    },
    {
      "id": "CO-03",
      "label": "流体が構内へ漏えいし環境へ影響する",
      "severity": "severe",
      "mitigativeBarriers": [
        { "id": "MB-03-1", "label": "排水口の封止設備", "status": "impaired" },
        { "id": "MB-03-2", "label": "漏えい検知と初動連絡", "status": "effective" }
      ]
    }
  ]
}