Research Article
System Hazard Analysis of Tower Crane in Different Phases on Construction Site
Table 9
External disturbance of usage phase.
| | Components and interactions | External disturbance |
| | Worker | HUP54 the pressure of reward and punishment mechanism | | HUP55 short of safety education and training | | HUP56 schedule pressure |
| | Lifting system | HUP57 bad weather | | HUP58 complex operating environment | | HUP59 lack of warning signs | | HUP60 multitower crane interaction |
| | Command and feedback | HUP61 noise | | HUP62 failure or interference of communication tools |
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