What’s LEL? Lower Explosive Limit Guide for Safety Pros
TL;DR I was reviewing gas test records on a petrochemical turnaround in the Gulf when the attendant’s four-gas monitor started alarming at 14% LEL inside a vessel that had been steamed, purged, and signed off as gas-free just forty minutes earlier. The vessel had residual hydrocarbons trapped behind scale buildup on the internal baffles — … Read more