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[i]NASA managers decided Tuesday to modify existing space station ammonia coolant hoses by welding shorter sections together to replace a longer hose design that failed a recent ground pressure test. If the work goes well - and the schedule is tight - NASA hopes to launch the shuttle Endeavour on Feb. 7 as planned to deliver a new module to the orbiting lab complex. ...At a space station program requirements control board meeting Tuesday at the Johnson Space Center in Houston, NASA managers decided to replace the suspect hoses with shorter, flight-qualified lines that will be welded together to reach the required length. At the same time, engineers will modify the hose design that failed in an attempt to make it strong enough to meet the design criteria. Those hoses will be used as backups. NASA spokesman Kelly Humphries said the welded hoses and the modified longer lines are expected to be shipped to the Kennedy Space Center about five days before Endeavour's planned launching. "Both sets of hoses are expected to be ready within a day or so of each other," he said.[/i]
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