{
  "schema": "structured-inspection-methods-v1",
  "scope": "Authored mechanism/coverage synthesis plus separately adopted cargo/submarine maximum interval table.",
  "coverage_rows": [
    {
      "observation": "Local thickness",
      "establishes": "Wall at identified location/method/state",
      "limit": "May miss isolated damage elsewhere."
    },
    {
      "observation": "Coupon/pig debris",
      "establishes": "Local exposure or qualitative recovered material",
      "limit": "No full-route integrity/rate proof."
    },
    {
      "observation": "Vibration displacement",
      "establishes": "Measured point/state motion",
      "limit": "Stress/geometry/envelope/measurement convention still needed."
    },
    {
      "observation": "Hose pressure/elongation",
      "establishes": "Pressure-state containment and length response",
      "limit": "Other tube/carcass/fitting/vacuum criteria still apply."
    },
    {
      "observation": "Hose electrical continuity",
      "establishes": "A conductive path in tested condition",
      "limit": "Water can mask intended-bond failure;purpose/construction matter."
    },
    {
      "observation": "Protective-function test",
      "establishes": "Action inside tested boundary",
      "limit": "Partial test is not whole detection/logic/final-action proof."
    }
  ],
  "hose_intervals": {
    "scope": "Maximum intervals only under specifically adopted active cargo/submarine inspection program; unusual condition/damage and reuse history can require earlier work.",
    "unit": "months",
    "columns": [
      "type",
      "cargo",
      "liftable_submarine_surface",
      "submarine_depth"
    ],
    "rows": [
      {
        "type": "external",
        "cargo": 6,
        "liftable_submarine_surface": 6,
        "submarine_depth": 12
      },
      {
        "type": "internal",
        "cargo": 6,
        "liftable_submarine_surface": 12,
        "submarine_depth": 12
      },
      {
        "type": "vacuum_and_hydrostatic",
        "cargo": 12,
        "liftable_submarine_surface": 12,
        "submarine_depth": 12
      }
    ],
    "out_of_service": "Normally hydrostatic assessment before reuse if out of service and untested more than6months under this program."
  }
}