{
  "schema": "piping-structured-tables/v1",
  "chapter": "C18",
  "tables": [
    {
      "id": "cleaning-duties",
      "scope": "Particular adopted equipment/material cleaning basis; not universal grades",
      "columns": [
        "symbol",
        "required_condition"
      ],
      "rows": [
        [
          "A",
          "Remove loose non-adherent material and adherent material that could break away during operation"
        ],
        [
          "B",
          "Remove oil, grease and protective coatings"
        ],
        [
          "C",
          "Remove adherent rust and mill scale to leave bare metal"
        ],
        [
          "D",
          "Protect cleaned surface against rust bloom before startup"
        ]
      ],
      "notes": [
        "Equipment/material schedule selects duty combination and method order",
        "C/D only when specified by responsible engineer under this basis",
        "Stainless scope includes duplex; material-specific chemistry restrictions retained"
      ]
    },
    {
      "id": "readiness-warrants",
      "scope": "Authored handover method; required criteria remain code/service/procedure specific",
      "columns": [
        "question",
        "evidence",
        "reopening_change"
      ],
      "rows": [
        [
          "Intended arrangement",
          "Walkdown, accepted changes and identity",
          "Substitution/moved equipment/altered branch or valve"
        ],
        [
          "Local joints",
          "Joining/treatment/examination records",
          "Repair/new field joint/thermal work"
        ],
        [
          "Required test boundary",
          "Boundary/medium/pressure/temperature/gauge/observations",
          "New joint/changed isolation or component"
        ],
        [
          "Required internal condition",
          "Cleaning/dryness/preservation evidence",
          "Opening/transport/residues/lost protection"
        ],
        [
          "Restored configuration",
          "Temporary removal/returned items/remade joints/support release",
          "Missing replacement/retained shipping restraint"
        ],
        [
          "Readiness for intended operation",
          "Outstanding-work and service-specific release checks",
          "Unresolved leak/missing equipment condition/changed service"
        ]
      ]
    }
  ]
}