{
  "schema": "piping-structured-tables/v1",
  "chapter": "C16",
  "tables": [
    {
      "id": "duplex-envelope-example",
      "scope": "Specified adopted product grades, including S31803/S32205 wrought products in required solution-treated condition; not all duplex alloys",
      "columns": [
        "feature",
        "condition"
      ],
      "rows": [
        [
          "Nominal stated heat-input band",
          {
            "kJ_per_mm": [
              0.5,
              2.5
            ],
            "kJ_per_in": [
              12.5,
              62.5
            ],
            "qualification": "Rounded nominal representations; retain controlling units and method, do not combine exact thresholds"
          }
        ],
        [
          "Maximum interpass temperature",
          {
            "degF": 350,
            "degC": 177
          }
        ],
        [
          "Production filler addition",
          "Required for this basis; autogenous welding excluded"
        ],
        [
          "Specified consumable family",
          "E2209 for SMAW; ER2209 for GTAW/GMAW/SAW with specified duplex SAW flux"
        ],
        [
          "Excluded processes",
          "PAW and FCAW"
        ],
        [
          "Additional procedure variables",
          "Specified heat-input change, interpass increase, consumable and purge composition qualification treatment"
        ],
        [
          "Qualification ferrite measurement",
          {
            "method": "Specified microscopic method of weld deposit and HAZ",
            "vol_percent": [
              35,
              65
            ],
            "qualification": "Not Ferrite Number"
          }
        ]
      ]
    },
    {
      "id": "examination-roles",
      "scope": "Method roles, not acceptance levels or substitution permission",
      "columns": [
        "method",
        "question",
        "limitation"
      ],
      "rows": [
        [
          "Visual",
          "Accessible preparation/surface/profile/arrangement",
          "Concealed features require access or qualified remote route"
        ],
        [
          "RT",
          "Relevant internal radiographic indications",
          "Geometry/image quality/coverage; not chemistry or every crack orientation"
        ],
        [
          "UT",
          "Indications under qualified sound path/technique",
          "Access/material/geometry; bond inspection uses specified interface method"
        ],
        [
          "PT",
          "Surface-breaking indications",
          "Accessible prepared surface; not full thickness"
        ],
        [
          "MT",
          "Magnetic indications in suitable material/area",
          "Material/technique; not universal replacement for stainless PT or volume examination"
        ],
        [
          "Hardness",
          "Local indentation response",
          "Location/scale/load/treatment; not every mechanical property"
        ],
        [
          "PMI",
          "Measured composition",
          "Analyzer/element/location capabilities; not original treatment"
        ],
        [
          "Ferrite/metallography",
          "Measured phase condition",
          "FN, vol% and intermetallic phase criteria remain distinct"
        ]
      ]
    }
  ]
}