{
  "schema": "piping-historical-packing-research/v1",
  "studies": [
    {
      "id": "laboratory1991",
      "packing_types": 16,
      "basis": "newidenticalvalves,constantmethane pressure,ambienttemperature",
      "figure_basis": "label100%compression; reference notdefined in providedaccount; not literal100%ringheightremoval",
      "aging": "9months",
      "cycling": "emissionsincreasedformost;cyclecountnotstatedinprovidedaccount",
      "results": "fivegroupD0.06\u20130.2lb/yr,groupA>200lb/yr,nozeromeasured"
    },
    {
      "id": "multisitefield1992",
      "valves": 178,
      "sites": 12,
      "packing_types": 9,
      "servicegroups": 8,
      "sparse_population": "somepackingtypes5valves",
      "medians": "allbelow250ppm, highestmedianin700\u20131050F/450\u20131010psigservices"
    },
    {
      "id": "braided1996",
      "packing_types": 9,
      "criterion": "\u2264500ppmafter1tighteningplusfiretests;oneproductpassedall,nomodernranking"
    },
    {
      "id": "refinery1994_1995",
      "quarterly_duration_years": 2,
      "packing_types": 4,
      "conditions": "initialscreening vsafter2repairattemptsif>500ppm;conversiontoannualmassnotuniversal"
    }
  ],
  "service_list": "historicalgraphiticchemicalincompatibilities specifiedseparately;not an exhaustivechemicalrating",
  "pressure_curve": "ambientthresholdcomparisons only;clippedrightedgenoteinoriginalpreventscompleteprotocolrecovery;nodigitizedglandselectioncurve",
  "graphitic_incompatibilities_literal": [
    "Aqua Regia",
    "Calcium Nitrate",
    "Chlorazotic Acid",
    "Chlorine (contaminated)",
    "Chlorine Dioxide",
    "Chlorine Triflouride",
    "Chloroaotic Acid",
    "Chloronitrous Acid",
    "Chromic Acid",
    "Chromic Anhydride",
    "Chromium Trioxide",
    "Hydrogen Dioxide (>10%)",
    "Hydrogen Peroxide (conc.)",
    "Lime Nitrate",
    "Lime Saltpeter",
    "Molten Sulfur",
    "Nitric Acid",
    "Nitrocalcite",
    "Nitrohydrochloric Acid",
    "Nitromuriatic Acid",
    "Norge Niter",
    "Norwegian Saltpeter",
    "Oxygen (>600\u00b0F)",
    "Ozone",
    "Perchloric Acid",
    "Phosphoric Acid (>85%)",
    "Potassium Bichromate",
    "Potassium Chromate-red",
    "Potassium Dichromate",
    "Potassium Nitrate",
    "Propyl Nitrate",
    "Sodium Dioxide",
    "Sodium Metaborate Peroxyhydrate",
    "Sodium Nitrate",
    "Sodium Perborate",
    "Sodium Peroxide",
    "Sodium Superoxide",
    "Sulfuric Acid (50 - 96%)",
    "Sulfuric Acid Fuming"
  ],
  "additional_mixtures": [
    "butane/phosphoricacid",
    "sulfuricacid/alkylate"
  ]
}