{
  "schema_version": 2,
  "name": "Quarkpad shroud proof record",
  "updated_at": "2026-08-17",
  "scope": "Physical accessories that direct airflow through passive GPUs in home AI systems.",
  "shop_process_not_certification": true,
  "statuses": [
    {
      "key": "research_only",
      "label": "Research only",
      "meaning": "No product or compatibility claim is approved."
    },
    {
      "key": "measurement_required",
      "label": "Measure first",
      "meaning": "A starting geometry is available but the buyer must confirm the exact card end and case."
    },
    {
      "key": "field_validation_pending",
      "label": "Field fit pending",
      "meaning": "The design targets one named cooler but the shop has not recorded the installed production revision."
    },
    {
      "key": "verified_physical_fit",
      "label": "Verified physical fit",
      "meaning": "The production revision passed an exact-board install record."
    },
    {
      "key": "bench_verified",
      "label": "Bench verified",
      "meaning": "Fit retention seal clearance fan power noise and packing gates passed."
    },
    {
      "key": "thermal_result_published",
      "label": "Thermal result published",
      "meaning": "A matched exact-board load result is public with every test condition."
    }
  ],
  "gates": [
    {
      "key": "identity",
      "label": "Exact identity",
      "pass_rule": "Record the full card model plus board or OEM part number and a label photo with serial numbers covered."
    },
    {
      "key": "production_revision",
      "label": "Production revision",
      "pass_rule": "Test the same named shroud revision and hardware that the buyer receives."
    },
    {
      "key": "fit_retention",
      "label": "Fit and retention",
      "pass_rule": "Complete at least 10 install and remove cycles with the part still seating cleanly."
    },
    {
      "key": "seal_clearance",
      "label": "Seal and clearance",
      "pass_rule": "On the exact unpowered board record the light direction then sweep non-residue test smoke around the perimeter at one named external-fan setup. Pass without foam or tape or adhesive hiding a visible gap or observed leak path. Record installed length plus working room."
    },
    {
      "key": "fan_power",
      "label": "Fan power",
      "pass_rule": "Name the fan setting RPM supply voltage measured current cable rating fuse and power source."
    },
    {
      "key": "noise",
      "label": "Comparable noise",
      "pass_rule": "Record background and setup LAeq in dBA at 0.5 m for at least 30 seconds with A weighting slow response and complete meter metadata."
    },
    {
      "key": "thermal",
      "label": "Matched load",
      "pass_rule": "Capture at least 20 minutes and publish the exact board workload ambient power fan setting steady temperature peak temperature and event flags."
    },
    {
      "key": "packing_photos",
      "label": "Packing and real photos",
      "pass_rule": "Record complete box contents packed dimensions weight drop check and real privacy-safe evidence photos."
    }
  ],
  "comparison_rules": {
    "seal": {
      "test_board_unpowered": true,
      "light_check_directions": [
        "inside-to-outside",
        "outside-to-inside"
      ],
      "smoke_medium": "non-residue test smoke",
      "smoke_pencil_distance_mm_range": [
        1,
        100
      ],
      "fan_power_label_required": true,
      "unsafe_sources_forbidden": [
        "open flame",
        "powder",
        "aerosol"
      ],
      "gap_fillers_forbidden": [
        "foam",
        "tape",
        "adhesive"
      ],
      "not_claimed": [
        "airflow quantity",
        "static pressure",
        "cooling performance"
      ]
    },
    "noise": {
      "metric": "LAeq dBA",
      "distance_m": 0.5,
      "minimum_duration_seconds": 30,
      "frequency_weighting": "A",
      "response": "slow",
      "background_required": true,
      "same_distance_and_duration_required": true,
      "not_claimed": [
        "ISO 3744 compliance",
        "sound power level",
        "lab certification"
      ],
      "sources": [
        "https://www.cdc.gov/niosh/noise/prevent/understand.html",
        "https://www.cdc.gov/niosh/noise/prevent/eliminate.html"
      ]
    },
    "thermal": {
      "minimum_capture_minutes": 20,
      "steady_window_minutes": 5,
      "minimum_steady_utilization_percent": 80,
      "same_board_required": true,
      "same_workload_required": true,
      "same_airflow_direction_required": true,
      "ambient_difference_limit_c": 3,
      "source": "https://docs.nvidia.com/deploy/nvidia-smi/index.html"
    }
  },
  "publication_rules": [
    "Never turn one exact-board result into a universal fit or temperature promise.",
    "Never name a quiet or performance tier before the matching physical test passes.",
    "Publish failures and exclusions instead of deleting them.",
    "Use real photos of the tested production revision."
  ]
}