Eagle Harbor ferry workers responsible for damage to Walla Walla
March 11, 2013 · 11:34 AM
Mistakes made by Washington State Ferries personnel were to blame for the failure of an electric drive motor that knocked the 188-car ferry M/V Walla Walla out of service.
WSF said a three-month safety investigation revealed that "human error" was the cause of the motor failure.
The motor failure happened Nov. 4 when the Walla Walla was undergoing routine annual maintenance at Eagle Harbor Maintenance Facility on Bainbridge Island.
Investigators said the failure was avoidable.
The mistakes of WSF workers included:
Communication between engine crew and maintenance staff was insufficient;
Eagle Harbor maintenance staff and the Walla Walla’s engine crew improperly prepared electrical equipment for a complex maintenance procedure; and
No written procedures or checklists were available for this maintenance work, which is rarely performed on the Jumbo-class Walla Walla.