Technical infographic diagram of industrial equipment with four energy sources: lightning bolt (electrical energy), open flame (thermal energy), water droplets and steam (hydraulic/pneumatic pressure), gear (mechanical energy). All sources are connected by lines to a central large red cross symbolizing danger. A yellow padlock with LOTO tag is securely attached to the red cross. Purpose: reliable physical isolation and blocking of all energy sources for safe maintenance and repair work. Style: technical schematic, flat vector graphics, clean outlines, industrial engineering illustration, white background, bold accent colors (red, yellow, blue, orange), pictograms, directional arrows, clear layout, minimal text, 4K resolution, high detail, professional safety poster style.
