As the Dali prepares to enter the repair site, NTSB investigators are interested in a small part of the electrical circuit whose malfunction could be the cause of the damage.
The container ship Dali left Baltimore to join the Virginia International Gateway terminal where it will unload 1,500 containers before entering repairs at the Norfolk International Terminal. For the record, on March 26, the 10,000 TEU container ship hit a pier of the Francis Scott Key bridge in Baltimore, causing the structure to collapse and the death of six workers who were on the bridge at the time of the collision. .
A preliminary report on the causes of the accident was released by the NTSB (National Transportation Safety Board) on May 14. The document, around twenty pages long, presents the first elements of the investigation (see our detailed article). This has continued since and a new communication was presented this Monday, June 24 by the NTSB. As could be expected, the investigation is narrowing around the causes of the two blackouts suffered by the ship a few tens of seconds apart. And it appears that investigators have identified a potentially faulty part in the ship’s circuit.
“Electrical circuit breakers HR1 and LR1 unexpectedly opened while the vessel was three ship lengths from the Key Bridge, causing the first loss of power to all onboard lighting and most equipment. While examining and testing the ship’s electrical power distribution system and control circuits, NTSB investigators (in coordination with the ship’s crew and parties to the investigation) noted an interruption in the power circuit. control of the HR1 undervoltage trigger » The part in question was taken from the ship as well as portions of cables for additional examinations in the NTSB laboratories.
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