{
  "calcs": {
    "designlife": 20.0
  }, 
  "materials": {
    "polymers": {
      "parfile": "../par/diffusion_v09_Case1a.yml", 
      "permcmp": "ch4,co2,h2s,h2o"
    }
  }, 
  "pipestr": {
    "borefluid": {
      "comp": {
        "ch4": 100.0, 
        "co2": 0.0, 
        "h2o": 0.0, 
        "h2s": 0.0
      }
    }, 
    "efa": {
      "depth_install": 0.0, 
      "dp_crack": 3.0
    }, 
    "segs": {
      "annuli": [
        {
          "is_vented": true, 
          "volume": 0.4844235
        }
      ], 
      "bore": {
        "ptot": 50.0
      }, 
      "length": 0.362, 
      "walls": {
        "douters": "77, 150", 
        "materials": "hdpe, pa11", 
        "shieldfactors": "0.5, 1.0", 
        "temperatures": [
          "60, 50", 
          "20, -250"
        ], 
        "thicknesses": "4.0, 20.0"
      }
    }
  }
}