Spacewalk underway to continue Station maintenance & upgrade tasks

Two NASA astronauts, Victor Glover and Mike Hopkins, are conducting a planned 6.5 hour Extravehicular Activity (EVA, or spacewalk) to accomplish several tasks deferred from a series of spacewalks conducted so far this year. The duo began U.S. EVA-73 at 08:14 EST/13:14 UTC when they took their spacesuits to battery power before exiting the Quest Airlock. U.S. EVA-73 For the spacewalk, EV1 will be Victor Glover, wearing the red-striped suit, and EV2 will be Mike Hopkins, wearing the plain white suit. The first task, after translating out to the P6 truss, will be to vent the Early Ammonia Servicer (EAS) jumpers of ammonia so they can be safely stowed without risk of rupturing due to thermal expansion. These jumpers were used during troubleshooting efforts to locate an ammonia leak on the P6 truss, during which a spare Photo Voltaic Radiator (PVR) was deployed to isolate the leak; however, the leak was ultimately found to be within the Pump Flow Control Subassembly, so the PVR was re-stowed. Once Glover and Hopkins have vented the ammonia from the jumpers, one jumper will be stowed on the P6 truss while the other is placed outside the Quest airlock so it can be easily…

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Spacewalk underway to continue Station maintenance & upgrade tasks

Updated: March 13, 2021 — 9:27 am