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NTSB: Loose wiring led to power failure before the March 2024 Baltimore Ship Crash, NTSB states

The National Transportation Safety Board announced on Tuesday that loose wires caused a power outage on the cargo vessel Dali, which crashed into Baltimore’s Francis Scott Key Bridge on March 20, 2024. Six people were killed and the bridge was destroyed.

The NTSB will hold an hearing in Washington, DC to determine the probable causes of the accident that resulted in the death of six construction workers.

The staff of the board said that they recommend operators perform periodic inspections on high voltage switchboards, and propose changes to allow ships more quickly recover after a loss of power.

The NTSB said that the Dali had lost power on several occasions before it crashed into the Key Bridge. This included a blackout while in port maintenance and just before the crash.

The NTSB is considering new recommendations for preventing catastrophic collisions when power outages occur at sea.

ASSESSING BRIDGED SAFETY

In March, the board requested urgent safety assessments for 68 bridges across 19 states, including the Golden Gate Bridge (also known as the Chesapeake Bay Bridge), Brooklyn Bridge, and George Washington Bridge.

The review is focused on bridges that were built before 1991, and are frequented primarily by ocean-going vessels. These bridges have not been subjected to vulnerability assessments.

The May crash of a Mexican Navy Training Ship into the Brooklyn Bridge raised concerns over bridges being damaged by vessels.

The NTSB reported last year that about four minutes prior to the crash, the Dali's power was cut off when the electrical breakers tripped. This caused a power outage for all shipboard equipment and lighting when the Dali was only 0.6 miles (1 km) away from the bridge.

Initially, it was estimated that a replacement bridge would cost $1.7 to $1.9 billion. It should be completed by the end of 2028. State officials announced on Monday that they expect the bridge to cost between $4.3 billion and $5.2 billion, with traffic opening only in late 2030. The increased cost was attributed to a new pier-protection system and a longer, more complex design.

The FBI has launched a criminal investigation into the collapse. (Reporting and editing by Lincoln Feast, Frances Kerry and David Shepardson)

(source: Reuters)