Table 4 A comparison of the reasons determined using the present method and those given in the investigation reports41.

From: Intelligent identification of causative factors and construction of accident chain for crane operation

Reasons in the investigation report

Reasons determined using the present method

The operator violated the operating procedures.

Operation against the procedures (A1)

There were the removal of tower standard section connecting bolts, tower cap and jacking sleeve not connected at the safety pin.

The failure of the security protection function (B3)

The enterprise gave full authority to unqualified persons to carry out the crane equipment installation and dismantling work.

Poor qualification inspection of personnel and equipment (D1)

There were the security management at the site.

Insufficient safety management (D2)

The enterprise did not arrange a full-time safety manager for on-site supervision and inspection.

No special personnel for safety management (D3)

The company failed to provide safety education and training to relevant operators.

Inadequate safety training and education (D7)