# Does diesel burned testing our fire pump count in Scope 1?

Canonical: https://senseible.earth/answers/fire-pump-diesel-testing-scope-1

Yes. Diesel fire pumps are run for weekly or monthly tests, and the fuel they burn is Scope 1 at 2.68 kg CO2 per litre. The amounts are small, but verifiers often ask for it. Record top-ups in a log and keep the fuel invoices or issue slips.

## Similar small sources

- Standby generators run for tests.
- Diesel for fire tenders or emergency vehicles.
- CO2 fire extinguishers refilled after use.

## Keep it simple

If the total is below your exclusion threshold, you may list it as excluded with the reason, but measuring it costs little.

## What Senseible does here

Senseible reads fuel invoices and electricity bills and applies IPCC 2006 factors and the CEA grid factor (0.710 kg CO2 per kWh), so you can compare Scope 1 and 2 before and after a change from the documents themselves.

- [Fire extinguisher refills](https://senseible.earth/answers/fire-extinguisher-refill-scope-1)
- [Diesel generator scope](https://senseible.earth/answers/diesel-generator-scope-1-or-scope-2)

Sources: [2006 IPCC Guidelines, Volume 2 Energy](https://www.ipcc-nggip.iges.or.jp/public/2006gl/vol2.html), [GHG Protocol Corporate Standard](https://ghgprotocol.org/corporate-standard)

Last reviewed 2026-10-23.