Design flaws, lack of maintenance and weaknesses in the methods used for inspection and testing to assess the safety of a crane led to a 400 kilogram trolley detaching from a gantry crane aboard the dredger Sand Falcon.
Says MAIB: “Sand Falcon was secured alongside a jetty when the trolley from its gantry-type stores crane detached and fell 7.5m, landing on the deck guardrails. The trolley weighed over 400kg and narrowly missed 7 people who were working nearby, either on the main deck or on the jetty ashore. The crane was being prepared to load ship’s stores at the time and it was not lifting any weight.
“This accident is one of three similar cases that happened in the period from January to May 2010. A total of 11 people have been injured in the 29 accidents involving the failure of non-cargo handling cranes that have been reported to MAIB since 2001.