The April 2026 interim revision of FM Data Sheet 2-81 adds an explanation of the recommended 30-minute diesel fire pump churn test. It is a useful prompt to review the purpose of a test, not only its calendar entry.[1]
What changed?
The revision history identifies new explanatory material in section 3.1.11.4. It also records changes concerning refrigerated-area testing, automated monitor fire suppression systems and the inspection-frequency comparison table. These are separate topics; automated fire suppression monitors should not be confused with a fire pump IoT dashboard.[1]
Why the operating time matters
For diesel pumps, FM explains that the duration helps the equipment reach operating temperature, reduces moisture in lubricating oil and helps avoid unburned-fuel accumulation. The added section explains a recommendation; it should not be presented as a new universal 30-minute rule for every electric pump.[1]
A practical review for your facility
Our suggested first step is to take the actual maintenance schedule to the responsible fire-protection engineer or insurer. Identify the pump drive, the documents governing the installation and who owns each inspection or test. Record which source and edition were used when the procedure was approved.
Then review the quality of the evidence: does a completed job card say only that the engine started, or does it identify the equipment, observations, abnormal conditions and the person responsible for follow-up? A recorded exception needs an owner and a resolution, not just a tick in the completed column.
Where monitoring fits
The Pumpsense Fire Pulse brochure describes status monitoring, notifications and cloud records. These capabilities can be discussed as part of a site's information system. The brochure alone is not evidence that a particular installation is authorised for unattended testing, and a dashboard should not be used to infer approval of an automated test arrangement.
Source: Pumpsense Fire Pulse brochure, pp. 9-13.
Review the applicable procedure with the person responsible for fire safety. Keep the distinction between monitoring, testing and approved unattended operation explicit.
Sources & further reading
Source records checked 19 October 2026. Linked publishers may subsequently revise their content. The relevant complete document and project requirements govern.