SSN-774 Virginia

colombamike

LE BRETON a écrit:

résumé : un mec a falsifier ses rapports d'inspection de joints de coque et plusieurs navires dont les nouveaux SNA vont repasser au bassin pour inspection mais pas de panique Gibbs enquête. lol!

Faudra pas que Dinozzo drague un peux trop fort une assistante de Northrop Grumman

N'empêche, quand on voit tous les problèmes que l'industrie naval américaines rencontre (erreurs, malfaçons, problèmes de soudures, cables électriques défaillants). A mon avis, c'est pas Gibbs qu'il faut envoyer mais Dr House

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dadou · Sujet: Re: SSN-774 Virginia Sam 05 Sep 2009, 11:30

D'autres soucis avec les Virginia

Citation:

Commissioning ceremonies for the new nuclear-powered attack submarine New Mexico have been delayed until next year while Northrop Grumman shipbuilders work to fix construction problems in the vessel's torpedo room, the U.S. Navy said September 3.

Capt. Michael Jabaley, the Navy's Virginia-class submarine program manager, said Northrop Grumman's Newport News, Va., shipyard and the Naval Sea Systems Command continue to investigate the problem, which so far has been found on four submarines. One of the submarines, the North Carolina, already is in service, but is undergoing a shipyard period at the General Dynamics Electric Boat shipyard in Groton, Conn. Two other submarines with the problem, the Missouri and California, are in various stages of construction.

Another in-service submarine, the New Hampshire, apparently escaped the problem.

"The most immediate concern based on schedule was the New Mexico," Jabaley said. The ship is about 99 percent complete, he said, and had been scheduled to be delivered to the Navy on Sept. 30. The commissioning ceremony had been scheduled for Nov. 21 at Norfolk, Va.

But Northrop Grumman and the Navy estimate about five weeks of work will be required to fix the problems on the New Mexico, and the new target delivery date of Nov. 13 didn't provide enough margin to ensure the ship would be ready by the 21st.

"We thought it would be prudent to delay the ceremony," Jabaley said. "Typically, we like two to three months between delivery and commissioning to give the crew time to become proficient at operating at sea."

The holiday period beginning with Thanksgiving was also a factor in the delay, Jabaley said. A new date hasn't yet been set, but it will "probably be in January or February," he said.

Even so, Newport News still has a shot to beat the contract delivery date of April 30, 2010. Beating the delivery date has become an important factor in keeping down costs, and Electric Boat, which shares equally with Newport News in building the submarines and alternates with the Virginia yard in completing the ships, has delivered its last two submarines ahead of schedule.

The New Mexico is the third Virginia-class submarine to be completed at Newport News, and the company hopes it's the first one delivered ahead of schedule.

"Northrop Grumman understands and supports the U.S. Navy's decision to delay the commissioning ceremony for the New Mexico until early 2010, to allow for completion of construction and repair work," said company spokeswoman Margaret Mitchell-Jones. "We take the quality of our work and product quality very seriously and we have instituted improvements in our engineering, production and quality systems across Northrop Grumman Shipbuilding. We are focused on completing the construction of New Mexico, and we look forward to delivering a great ship to the Navy."

The bolt problem came to light in early August when Electric Boat workers had trouble ensuring a proper fit in the tracks of the weapon handling system aboard the submarine Missouri. Newport News builds the weapons room section of all Virginia-class submarines, and GD, as prime contractor on the Virginia-class program, reported the problem to the Navy on Aug. 6.