# CC-KPI-C-04 Consumer Connection cooling unplanned interruptions

> Consumer Connection cooling unplanned interruptions: ≤ 3 a year. Consumer Connection KPI, HNTAS-style · proposed. Monitoring points, threshold and calculation.

| | |
|---|---|
| Element | Consumer Connection (CC) |
| Standing | HNTAS-style · proposed |
| Monitoring points | CC1 · 30 min · cooling meter tF |
| Threshold | ≤ 3 a year |
| Calculation | count of unplanned periods ≥ 12 h with chilled flow tF > maximum chilled flow temperature. Uses design/tFMaxCool (proposed) |
| Period | Previous 12 months |

Part of the **Cooling forms** family.

## Discuss this KPI

Is the threshold right? Does the calculation match what you compute on your networks? [Comment on CC-KPI-C-04](https://github.com/heatweb/HNQAP/issues/new?template=kpi-comment.yml&kpi=CC-KPI-C-04&title=CC-KPI-C-04%3A%20), or report how it behaves on your data. Comments are public and are read before every revision.

## Machine-readable

This KPI is a row of [kpi-reference.json](/data/kpi-reference.json) (element `CC`, code `CC-KPI-C-04`). The [notation and rules](/kpis/#how-to-read-the-tables) that apply to every KPI are on the reference page.

## Related KPIs on the consumer connection

- [CC-KPI-C-01 Consumer Connection cooling ARMS connectivity (aggregated)](/kpis/cc-kpi-c-01/)
- [CC-KPI-C-02 Consumer Connection cooling data completeness (aggregated)](/kpis/cc-kpi-c-02/)
- [CC-KPI-C-03 Consumer Connection cooling monitoring points operational (aggregated)](/kpis/cc-kpi-c-03/)
- [CC-KPI-C-05 Consumer Connection cooling planned interruptions](/kpis/cc-kpi-c-05/)
- [CC-KPI-C-07 Consumer Connection cooling volume-weighted average return temperature](/kpis/cc-kpi-c-07/)
- [CC-KPI-C-07A Consumer Connection cooling average return temperature (reported)](/kpis/cc-kpi-c-07a/)
- [CC-KPI-C-08 Consumer Connection cooling volume-weighted average temperature difference](/kpis/cc-kpi-c-08/)