{
  "schema": "piping-aqueous-sour-method/v1",
  "scope": "historical refinery/gasplant carbonsteel aqueous route",
  "units": "H2S/cyanide/carbonate mg/kg of water, pHwater",
  "H2S_columns": [
    "<50",
    "50\u20131000",
    ">1000"
  ],
  "SSC_rows": [
    [
      "4.0\u20135.4",
      "cyanide no significance atpH\u22647.5",
      "Low",
      "Moderate",
      "High"
    ],
    [
      "5.5\u20137.5",
      "cyanide no significance atpH\u22647.5",
      "Low",
      "Low",
      "Moderate"
    ],
    [
      "7.6\u20137.9",
      "cyanide<50",
      "Low",
      "Moderate",
      "High"
    ],
    [
      "\u22658.0",
      "cyanide<20",
      "Low",
      "Moderate",
      "High"
    ]
  ],
  "HIC_SOHIC_rows": [
    [
      "<4.0",
      "cyanide no significance atpH\u22647.5",
      "Moderate",
      "Moderate",
      "Moderate"
    ],
    [
      "7.6\u20137.9",
      "cyanide\u226550",
      "Moderate",
      "Moderate",
      "High"
    ],
    [
      "\u22658.0",
      "cyanide\u226520",
      "Moderate",
      "High",
      "High"
    ]
  ],
  "B_route_SSC": "High independently",
  "carbonate_columns": [
    "<100",
    "100\u2013500",
    "501\u20131000",
    ">1000"
  ],
  "carbonate_rows": [
    [
      "7.6\u20138.3",
      "Low",
      "Low",
      "Low",
      "Moderate"
    ],
    [
      "8.4\u20138.9",
      "Low",
      "Low",
      "Moderate",
      "High"
    ],
    [
      "\u22659.0",
      "Low",
      "Moderate",
      "High",
      "High"
    ]
  ],
  "gates": {
    "freewater": "namedmechanisms no susceptibility withoutlikelyfreewater; not otherfailuremodes",
    "SSC_A": "water,pH>4,lowcyanide; printedrowstarts4.0 conflict",
    "HIC_B": "water,pH/cyanide beyondA",
    "carbonate": "water,H2S>50,pH\u22657.6;H2S<50nosusceptibility;exact50unresolved",
    "duration": "normaloperation;shortupsets onlyifmechanism likelyshortterm",
    "unknowncyanide": "materialsengineer assessment"
  },
  "boundaries": "Printed bins/gaps/equalities retained; no continuous interpolation or rounding",
  "requirements": {
    "SSC": [
      "normalclass",
      "moderatesour",
      "moderatesour"
    ],
    "HIC_SOHIC": [
      "notapplicable",
      "moderatesour",
      "highsour"
    ],
    "carbonate": [
      "moderatesour",
      "moderatesour+PWHT",
      "moderatesour+PWHT"
    ]
  },
  "multiplemechanisms": "combine applicable materialandPWHT obligations; no blind scalarmax",
  "classnotes": "Full moderate/high definitions,NACE/HICqualification,bolt/trim/flange/thermalcycle/manufacturing requirements in prose; externaladoption required"
}