And once built, they are often kept in service far longer than originally projected.
Certainly, the danger of an explosion increased the longer the ageing plane was kept in service.
And that means older fighters will be kept in service longer, increasing costs for maintenance and spare parts.
Other senior Russian defense officials told the Interfax news service that some Russian nuclear rockets might be kept in service longer because of the American action, but that no major shifts in Russia's strategic posture were envisioned.
19] informed the British Foreign Office that it intends to keep in service 19,000 tons of over-age destroyers which otherwise would have been thrown out of commission before the New Year.
To keep the oil pumping, the rigs, pipelines and other equipment must be kept in service much longer than originally planned, and that is raising concerns about maintenance and safety on the oldest of the rigs.
To keep the oil pumping, the rigs, pipelines and other equipment must be kept in service much longer than originally planned, and that is raising concerns about maintenance and safety on the oldest of the North Sea rigs.
The tanks, built in the 1950s, were supposed to last only a couple of decades; they have been kept in service partly by adding chemicals that were supposed to stabilise the gunk, but may have made it more volatile.In this section Why no longer so alluring?
In a stream of diplomatic cables, embassy security officers warned their superiors at the State Department of a worsening threat from Islamic extremists, and requested that the teams of military personnel and State Department security guards who were already on duty be kept in service.
And when the experiment was abandoned after 18 months -- complaints had more than doubled on the routes with private-sector service, and ridership plummeted -- the new equipment that the agency provided to the bus contractor had been so poorly maintained that only 10 of 40 new buses could be kept in service.
