Tissue penetration by high-pressure water, chemical burns from residual fluids

Wear specialised protective suits, fully open drain valves, and follow LOTO procedures

Explosion due to hydrogen leakage, asphyxiation due to nitrogen purging

Verify 0% hydrogen with portable gas detectors, wear anti-static clothing, and use non-sparking tools

Splashing of residual liquids during flange disassembly, toxic gas poisoning

Wear full-face gas masks, loosen bolts sequentially away from the body

Falls due to high winds, fire exposure if residual gas ignites

Monitor wind speed (prohibited above 10m/s), use double-lanyard safety harnesses, and verify DCS isolation

Impact from hose detachment during high-pressure water discharge, gas inhalation

Verify hose safety pin engagement, work with back to the wind, and use dedicated caps

Crushing due to unexpected valve operation, respiratory issues from adsorbent dust

Remove residual pneumatic pressure, implement LOTO, and wear high-efficiency dust masks

Asphyxiation in confined space, explosion caused by lighting leakage

Measure gas concentration at top/middle/bottom, use forced ventilation and explosion-proof low-voltage (under 24V) lighting

Crushing due to vehicle rolling, hydrogen gas explosion due to static discharge

Install 2 or more wheel chocks, connect grounding clamps first, and verify resistance

Unexpected process shutdown due to interlock failure, electric shock from live parts

Double-check DCS bypass status, verify use of insulated gloves and anti-static clothing

Gas explosion if different chemicals mix, chemical eruption when opening containers

Double-check chemical labels, store separately, and relieve internal pressure while wearing face protection