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 |
|
|