# Alarm-pattern card — Turbine 7

> Kit 9 · Turbine 7 · job aid for the control-room wall · one page, prints on A4 · fictional case, illustrative figures

**Before any restart after an alarm, name the pattern and the evidence that puts it there. If you cannot name it, hold or escalate.**

## The four patterns

| Pattern | What you see | Where the evidence is | Call |
|---|---|---|---|
| **Cleared with a logged inspection** | Reading back inside the band and settling; someone was up-tower and wrote it down | Inspection card or work order on the part; the maintenance log | **Restart.** Hand over a watch item |
| **External cause, turbine nominal** | Trip from the grid or the weather; every turbine reading normal | Trip record; the sister turbines on the same feeder; the met mast | **Restart.** Nothing on the turbine needs a look |
| **Rising trend, no inspection yet** | The value is still climbing over the last 20 minutes; nobody has looked | The 20-minute trend, not the alarm text | **Hold for inspection.** Restarting or derating is the critical error |
| **Fault came back after a reset** | The same fault, reset once, back again | Reset history on the component log | **Hold for inspection.** A reset silenced it; it did not fix it |

## Three checks before you call it

1. **Trend, not state.** Open the 20-minute trend. Is it settling or still moving?
2. **Who looked?** Find the inspection record. "Cleared" with no name and time on it is not cleared.
3. **Is it only us?** Compare the sister turbines on the string. If they tripped too, the cause is probably outside the turbine.

## When production asks you to run it

Give the number, the risk and the next step, in that order:

> "Vibration is 4.8 mm/s against a 2.0 baseline and still climbing. If the gearbox goes, that is a jack-up vessel and weeks, not a night. The inspection is booked for first light."

Not the rulebook ("policy says no"), and never "I'll restart and keep an eye on it".

## Escalate when

- the evidence points two ways (for example, a cleared alarm whose trend has started to rise again);
- the call is outside the escalation boundary agreed with the shift leads;
- you have held and the pressure continues.

## Write it in the handover

The call, the reading or log entry that decided it (with its number or time), and what happens next (who, when).

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*Figures are illustrative. This card summarises the patterns practised in the Turbine 7 simulator; it does not replace the OEM's alarm procedures or your site's escalation boundary.*