{
  "version": "packet05-v1",
  "scope": "Source-conditioned qualitative process and construction geometry; no separation efficiency, liquid capacity, choking or hydraulic distribution acceptance",
  "alternatives": [
    {
      "name": "vessel separator with separate surge drums",
      "paths": [
        [
          "mixed inlet",
          "phase separator"
        ],
        [
          "phase separator gas space",
          "gas offtake"
        ],
        [
          "separator lower liquid connection",
          "surge drum"
        ],
        [
          "surge drum gas return",
          "separator gas space"
        ],
        [
          "surge drum lower outlet",
          "liquid export"
        ]
      ],
      "geometry": "separator and gas return elevated relative to surge storage in the depicted concept",
      "limits": "no source example dimensions adopted; return/transfer capacity and pressure duty require evaluation"
    },
    {
      "name": "multiple-pipe primary and secondary bottles",
      "paths": [
        [
          "mixed inlet",
          "splitter",
          "inlet header",
          "downcomers",
          "primary entrance separation section"
        ],
        [
          "primary section before riser",
          "gas riser",
          "gas outlet header",
          "gas outlet"
        ],
        [
          "primary downstream storage",
          "lower liquid outlet header",
          "liquid export"
        ],
        [
          "secondary storage bottle lower end",
          "lower liquid outlet header"
        ]
      ],
      "primary_role": "separation before riser plus storage downstream",
      "secondary_role": "storage only, no inlet downcomer or separation riser shown",
      "limits": "no credit for lower-end transfer in adopted worst-case primary loading; no equalizer header"
    },
    {
      "name": "parking-loop physical storage concept",
      "paths": [
        [
          "mixed inlet",
          "separate phase separator"
        ],
        [
          "separator liquid outlet",
          "long pipe storage loop"
        ],
        [
          "sphere in storage loop",
          "separates parked liquid from stored gas"
        ],
        [
          "loop far end",
          "selected displaced-gas path"
        ]
      ],
      "limits": "strict adopted operating procedure required; source schematic incomplete for full operation; no compressor/control/valve network reproduced"
    }
  ],
  "inlet_geometry": {
    "parts": [
      "pipeline end",
      "splitter(s)",
      "inlet header",
      "eccentric entry restriction",
      "downcomer",
      "eccentric expander",
      "primary separation section"
    ],
    "selected_construction": "eccentric tee at lower header side followed by expander with flat side down, replacing welded internal constrictor approach under adopted method",
    "mechanisms": [
      "guide liquid along lower wall",
      "avoid unsupported central jetting that promotes mist/foam",
      "reduce upstream dirt pocket",
      "expand downstream to promote segregation",
      "retain continuous lower bottle slope at flat-side-down entry"
    ],
    "adverse_comparisons": [
      {
        "name": "central welded splitter plate",
        "status": "not recommended in depicted method",
        "observation": "central jetting"
      },
      {
        "name": "eccentric welded splitter plate",
        "status": "not recommended in depicted method",
        "observation": "wall guidance alone does not reverse adverse construction disposition"
      }
    ],
    "numeric_conditions": {
      "porthole_max_fraction_of_inlet_header_inside_diameter": 0.4,
      "quantity": "diameter fraction, not area fraction",
      "existing_downcomer_ratio": "Ddowncomer < (2/3)Dbottle in descriptive body",
      "distinct_model_geometry": "Six-panel deposition model uses exactly (2/3), not a general fabrication substitution",
      "preferred_downcomer_angle_deg": 45,
      "status": "local adopted-method conditions, not dimension solver or performance guarantee"
    }
  },
  "gas_outlets": {
    "alternatives": [
      "single header with symmetric central takeoff",
      "two symmetric takeoffs collected into a common central outlet"
    ],
    "physical_issue": "unequal gas-side pressure loss can raise liquid levels in bottles nearer gas outlet by manometer effect",
    "related_selected_options": "gas exiting both ends of header or selected riser-top reducers can address distribution under adopted basis",
    "limits": [
      "topological symmetry not proof of equal pressure loss or per-riser flow",
      "no added equalizer header",
      "two-riser split sizing requires separate quantitative basis",
      "no reverse-flow or carryover acceptance"
    ]
  },
  "source_geometry_exceptions": {
    "equalizer": "historical example contains it; adopted method excludes due to geometry-sensitive carryover into secondary bottles; omitted from authored topology",
    "partial_isolation": "source example permits some normal production on remaining section; sphering prohibited while partly isolated; no full-capacity assumption",
    "slow_storage_slope_percent": 0.4,
    "slow_storage_condition": "source-specific case not intended for fast flowing operation",
    "general_storage_minimum_percent": 1.0,
    "general_separation_recommended_max_percent": 2.5,
    "another_drawn_separation_percent": 3.0,
    "slope_consequence": "3% drawn example and2.5% general recommendation remain different conditions; no unified slope rule or adopted size",
    "storage": "use existing usable-liquid-volume method with gas-outlet maximum-fill datum; full bottle volume not usable capacity"
  },
  "burial_interfaces": {
    "examples": [
      "complete mound with bottles above original grade",
      "retained mound with exposed outlet transition",
      "buried body with outlet access pit"
    ],
    "material_conditions": "body describes stable sand mound; graphic labels a clay mound example; different source examples, no combined soil prescription",
    "interfaces": [
      "natural/original grade",
      "bottle gradient",
      "mound stability/foundation support",
      "buried/exposed transition",
      "retaining wall or pit",
      "drainage/collection",
      "inspection and header end access",
      "corrosion/condition monitoring"
    ],
    "loads": [
      "pressure",
      "thermal expansion",
      "slug/surge passage",
      "support reactions",
      "differential settlement",
      "environmental loading",
      "test contents"
    ],
    "limits": [
      "no default0.6/1.5mclearance or paving slope adopted",
      "rubber transit detail illustrative, not qualified settlement/fire seal",
      "burial alone does not demonstrate fire resistance",
      "no safe pit-entry or drainage capacity conclusion",
      "condition monitoring/access plan before burial"
    ]
  }
}