📋 What was this drill?

Drill: Status semantics: a notification list using only semantic colors (success/warn/danger/info). Each status must be distinguishable to colorblind users (shape + color, not color alone).

Interpretation: Built as a cold-chain HACCP alert desk for a produce distribution depot (receiving dock + cold storage). Statuses quadruple-encoded — glyph silhouette (octagon/triangle/disc-check/square), 6px left rail, tinted tile, and mono measured-vs-cap deviation meta — so hue is never load-bearing, with an in-artifact grayscale proof strip demonstrating deuteranopia/protanopia legibility. Severity rides FDA food-code classes (P/Pf/C) as neutral mono chips, orthogonal to status color; all chrome neutral per the only-semantic-colors brief.

COLDLINE
Harbor Produce Exchange · Depot 2 — Receiving & Cold Storage
SAT 19 SEP 2026 · SHIFT 06:00–14:00

Alert desk

Live HACCP monitoring · 14 watch points · probe set B · page refreshes with each reading cycle

  1. Walk-in cooler 3 above hold limit P

    Produce walk-in has held 44.1–44.9 °F for 3 h 12 m — past the 41.0 °F cap for TCS foods. Corrective-action window closes 14:56: move stock to Cooler 1 and log the deviation.

    COOLER-03 44.7 °F CAP 41.0 °F +3H12M OVER PROBE B-114
  2. Reefer trailer 14 arrived warm P

    Inbound reefer TR-14 (Lopez Farms, manifest 4481) logged 52.3 °F at the dock throat; pulp probe on two pallets read 49.8 °F. Load is outside receiving tolerance — hold at dock and call QA before unloading.

    DOCK-REEF-14 52.3 °F TOL 41.0 °F PULP 49.8 °F ARR 11:42
  3. Dish machine final rinse below temp Pf

    Final-rinse gauge read 176 °F on the last two racks — 183 °F is required at the manifold for sanitization. Booster tank is likely scaling; chemical tech is onsite Thursday.

    DISH-01 176 °F NEED 183 °F −7 °F SHORT PROBE B-121
  4. Freezer 2 drifting toward cap C ACK 13:04 · R. OSEI

    Freezer 2 climbed from −4.1 °F to −1.8 °F over six hours; cap is 0.0 °F. Door-seal foam reads worn on the north edge — seal swap scheduled with tonight's probe rotation.

    FREEZER-02 −1.8 °F CAP 0.0 °F Δ +2.3 °F/6H PROBE B-107
  5. Probe B-112 battery low C

    Loading-dock door probe B-112 reports 11 % battery — roughly 36 h of runtime left. A charged swap unit is in bin 4; fits into tonight's 23:00 rotation.

    PROBE B-112 BATT 11 % ~36 H LEFT SWAP BIN 4
  6. Cooler 1 back in range after door-ajar event

    Cooler 1 returned to 38.6 °F after yesterday's door-ajar alarm; both 4-hour rechecks landed in band. Deviation 24-0918 is closed with the corrective note attached.

    COOLER-01 38.6 °F BAND 33.0–41.0 °F RECHECK 2/2 PASS DEV-24-0918
  7. Probe set B calibration verified

    Overnight ice-point check on probe set B passed — all six sensors within ±0.3 °F of the reference. Next calibration is due 10-02.

    SET-B 6/6 PASS ΔMAX ±0.3 °F NEXT 10-02
  8. Manifest 4482 received clean

    Lopez Farms manifest 4482 — 13 pallets of mixed produce — received with every pulp temp inside band. Logged to the morning shift report without action.

    DOCK-01 13 PALLETS PULP MAX 40.2 °F 09:58
  9. Probe rotation tonight, 23:00

    Probe set A rotation continues tonight at 23:00 — B-107 and B-121 drop for about 20 minutes each. Their watch points will show dash gaps, not false alarms.

    SET-A 23:00 2 PROBES ~20 MIN EA
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