1月24日凌晨，南昌铁路局福州工务段铁路探伤员王飞（右）和同伴一起检测铁轨。铁轨内部有没有伤损、焊缝有没有气泡或夹杂、铁轨接头有没有焊接好……发现这些肉眼看不到的安全威胁，依靠的是铁路探伤工的精确检查。据介绍，南昌铁路局福州工务段检控车间探伤工在2012年共检测到118根重伤钢轨，200多根轻伤钢轨，确保了列车安全运行。新华社发（雍万俊摄） 24 January morning,Nanchang railway administration fuzhou Labour wu paragraph railway agent WangFei wounded(right)And with a partner test track.Tracks have internal wounds/Weld have bubble or inclusion/Rail joint have welding good...Found these invisible security threats,Depending on the railway inspection work of the accurate inspection.According to introducing,Nanchang railway administration fuzhou Labour wu paragraph prosecution workshop inspection work in 2012 identified 118 root seriously rail,More than 200 root flesh wound rail,To ensure the safe operation of the train.The xinhua news agency hair(YongWanJun perturbation)