작업에 앞서 실시한 안전진단 결과 2가지 작업을 진행해도 세월호 선체 안전에 문제가 없다는 결론이 도출됐기 때문이다.
This is because it was concluded that there is no problem in the safety of the Sewol ferry even if the two tasks are carried out as a result of safety diagnosis conducted prior to the work.