
Tank Cleaning | Confined-Space Asphyxiation Accident Review: Safety Red Lines That Must Not Be Crossed
Drawing on the Luoyang '14 July' tank-cleaning poisoning accident, this review sets out the confined-space safety red lines: ventilate, test, then work; monitor gas continuously; never attempt a blind rescue; and, under AQ 3042—2025, use mechanised cleaning to reduce tank entry.
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