Warehouse keeper freezer power-loss emergency SOP - every minute after the cut is a degree gained; door stays shut, goods stay put, the record keeps running

You are the warehouse keeper of a central kitchen. Write
"freezer power loss" as an archivable emergency SOP, posted
inside the freezer door and at the electrical room.

Background: after a freezer loses power the temperature
climbs every minute, and the size of the incident depends
almost entirely on what the first ten minutes got right.
The most expensive single move is opening the door to
check the goods - one opening costs as much warming as
half an hour standing shut. The SOP's mission: during an
outage, nobody thinks; everyone works the list.

1. At the cut (0-10 minutes, exactly four actions):
   a. Confirm scope: plant-wide outage or one freezer
      (check the neighboring room, check the electrical
      room) - this decides whether you wait for grid
      power or for a repair
   b. Close doors: confirm every freezer door shut, hang
      the "no opening during outage" sign - the urge to
      peek arrives fast; the sign must go up before
      hands start shaking
   c. Notify: electrician and plant manager, phone
      numbers printed on the SOP - never "contact the
      relevant department"
   d. Record the starting state: outage time, each
      unit's starting temperature, and the inventory
      list (the latest printed stock sheet lives in the
      pouch on the freezer door)

2. During the outage (three disciplines only):
- No opening the freezer door, for any reason -
  including "just one look"
- Temperature goes manual: every 【30】 minutes note
  each unit's display reading (where still powered) or
  the external stick-on thermometer, on the outage
  record sheet
- Past 【2】 hours of outage or with cabinet
  temperature approaching the stock's safety limit,
  activate the refrigerated-truck or cold-source
  transfer plan per plant procedure - that plan's phone
  numbers are on this SOP too

3. After restoration (judge first, move goods second):
- Restoration is not recovery: record the peak
  temperature reached and how long it held; both feed
  the judgment table
- Three-tier stock judgment (the table hangs on the
  door from before the outage - standards are not set
  mid-blackout):
  A: temperature never exceeded the safety limit for
     that stock class - return to service, normal
     picking, record filed
  B: briefly exceeded the safety limit but not the
     disposition ceiling - hold for QC assessment;
     release on pass, else downgrade to C
  C: exceeded the ceiling, or exceeded too long -
     quarantine and seal; disposition decided jointly
     by QC and the plant manager; the keeper never
     writes stock off unilaterally
- Limits differ by product class: build a comparison
  table (livestock and poultry, seafood, dairy, frozen
  semi-finished, one row each) with values set per your
  QC standards and local regulation. The SOP fixes the
  structure and fills in no numbers

4. Records filed (two pages):
- Page 1, outage record: start and end times /
  temperature log series / door-open count (normally
  zero; any opening states its reason) / judgment
  outcome
- Page 2, stock judgment: batch / class / peak
  temperature / duration over limit / tier /
  disposition / signature

Constraints:
- Every step names who does it - never "relevant
  personnel"; during an outage nobody has time to wonder
  whether they are relevant
- The SOP gives no "roughly how long it holds"
  estimates - holding time depends on insulation,
  stock mass, and ambient temperature; a printed number
  misleads. Manual temperature logging replaces
  estimation
- Post-restoration judgment authority goes to positions,
  not names: keeper decides A, QC decides B, C requires
  the plant manager - people change, the SOP must not
  have to

Why it is written this way

"Door stays closed" leads the outage disciplines because most of this SOP's reason to exist sits in that one line. The human first reaction to an outage is to open up and check on the goods - a move that dumps the cold air, floods in warm humid air, and costs as much warming as half an hour standing shut, with refrost problems as a parting gift. The SOP fights the door urge with "sign first": the sign must go up in the first minutes, because finding a sign after someone is already hesitating at the door is too late.

The judgment table must hang on the door from before the outage because only someone who has lived through one asks for that: after restoration, everyone crowds the doorway asking "is the stock still good," and nobody has the presence of mind to invent standards then - fatigue, hunger, and a boss chasing orders all arrive together. Standards, limits, and tiers set in calm weather and posted on the wall leave nothing for blackout day but looking up and filling in. The printed stock sheet in the door pouch exists for the same reason: the inventory system is probably down too.

Temperature limits become per-class variable tables rather than fixed numbers for two reasons: the safety boundaries genuinely differ by class - one uniform number either wrongs seafood or lets dairy slide; and the values must align with your QC standards and the local regulator, so if the SOP fills them in, accountability blurs after an incident. The SOP fixes structure and authority; the numbers belong to QC per the standards. Each in its place.

Authority going to positions instead of names is what lets an SOP stay alive: a SOP written to "QC" and "plant manager" survives staff turnover, while one written to a person expires the night that person resigns. It looks trivial; it is the real reason most wall-mounted SOPs die - not wrong content, but a name that left and nobody updated.

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