|Maintainability test of Kibo's ECLSS - TCS system rack
(left : front view, right : rear view)
A maintainability test of the Japanese Experiment Module Kibo's Environmental
Control and Life Support System (ECLSS) and Thermal Control System (TCS) rack
was conducted in the Kobe Shipyard of Mitsubishi Heavy Industry (MHI) from July
9 to July 12,1999. Here is the report.
rack, which will be installed in the Pressurized module of Kibo, holds two subsystems,
an air conditioning ventilator and a thermal controller that will remove the heat
generated by the equipment installed in Kibo.
Three test personnel conducted
the test from the viewpoints of whether astronauts can operate the equipment and
perform maintenance on the ECLSS-TCS rack without any problems on orbit.
Three test personnel,
including a NASA astronaut, conducted the test using the proto-flight model of
the ECLSS-TCS rack, that will actually be installed in Kibo. Personnel of different
heights were selected to ensure that an astronaut of any height could handle the
The following four items were tested.
Access: To confirm whether there is enough space for grasping objects such as
Access: To confirm whether objects to be grasped or labels attached can be seen
Clearance: To confirm whether there is enough space for handling tools such as
ratchetwrenches or torquewrenches.|
Edge Evaluation: To confirm that there are no sharp edges, that could hurt astronauts.|
The test personnel
concluded that astronauts of all sizes can handle the rack and conduct maintenance
activities without any problems. The NASA astronaut also made valuable comments,
recommending that other kinds of tools be used.
This test was conducted using Rack 1 of the two
ECLSS-TCS racks. A similar test will be conducted for Rack 2 in late September
1999. That test will concentrate on items pointed out by this test and on specifications
which differ from those of Rack 1.
Last Update:Sep. 2, 1999