Fri, Apr 30, 2004
Will Release 350,000 Gallons Follows Valve Job
For the fourth time in Space Shuttle Program history, 350,000
gallons of water will be released on a Mobile Launcher Platform
(MLP) at Launch Pad 39A during a water sound suppression test.
The test will take place at 8 a.m. May 7.
This test is being conducted following the replacement of the
six main system valves, which had been in place since the beginning
of the Shuttle Program and had reached the end of their service
life. Also, the hydraulic portion of the valve actuators has been
redesigned and simplified to reduce maintenance costs.
The sound suppression water system is installed on the launch
pads to protect the orbiter and its payloads from damage by
acoustical energy reflected from the MLP during launch. The system
includes an elevated water tank with a capacity of 300,000 gallons.
The tank is 290 feet high and stands on the northeast side of the
Pad. The water is released just before the ignition of the
orbiter's three main engines and twin solid rocket boosters, and
flows through parallel 7-foot-diameter pipes to the Pad area.
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