Mezue ahịrịokwu na-esonụ: Ihe ọmụmụ dị mkpa na nyocha HRO gụnyere ma ọmụmụ ọdachi (dịka,
Ihe mberede nuklia nke Three Mile Island, ọdachi Challenger na ọdachi Columbia, mmiri ọgwụ Bhopal, ihe mberede ụgbọelu Tenerife, ọkụ ọhịa Mann Gulch, ihe mberede ọkụ enyi Black Hawk na Iraq) na HROs dị ka usoro nchịkwa ụgbọ elu, ụgbọ elu ụgbọ mmiri ụgbọ mmiri, na arụmọrụ ike nuklia.