Three workers die after carbon monoxide exposure in wind turbine foundation pit

A report cited by trade press describes an incident in June 2025 at a wind farm construction site, reported under the publication's China and Asia-Pacific coverage. A worker entered a wind turbine foundation pit where carbon monoxide had accumulated and was overcome by the gas. Two colleagues then entered the pit in attempts to rescue the first worker and were also overcome. Three workers died. The available reporting does not name the site, the owner, the operator or any contractor, and does not state how the carbon monoxide came to accumulate or what monitoring or entry controls were in place. Only a short summary of the report is publicly visible, so further detail is not yet confirmed.

Carbon monoxide is reported to have accumulated in a confined turbine foundation pit at a construction site. Two further deaths occurred during rescue attempts by colleagues. Whether gas detection, permit controls or breathing apparatus were available or used has not been reported.

1. Confined spaces such as turbine foundation pits should be tested for hazardous gases, including carbon monoxide, before any entry and monitored continuously while work is in progress.
2. Emergency arrangements should ensure that confined space rescue is carried out by trained responders with appropriate breathing apparatus, so that colleagues are not placed at risk by unprotected entry.
3. Construction sites should operate a confined space entry permit system with briefed rescue plans, since a large share of confined space fatalities occur among would-be rescuers.

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