ISS resumed work to find the place of air leak

It became known that the cosmonauts on the International Space Station resumed work on finding the place of an air leak in the Russian module “Zvezda” in order to eliminate it with the help of instruments delivered on the Progress cargo vehicle. About it reported RIA Novosti with reference to the data of negotiations between the crew of the orbital station with the ground-based MCC.

Recall that in December last year, the search for a leak in the intermediate chamber of the Russian Zvezda module was suspended, and the hatch to the chamber was closed. Today, during negotiations with the Earth, Russian cosmonauts Sergei Ryzhikov and Sergei Kud-Sverchkov received information about the schedule of upcoming work, which includes searching for the leak with a microscope, using video cameras and means to seal the leak.

On February 17, the Progress MS-16 cargo vehicle delivered 40 kg of nitrogen to the ISS to compensate for air leaks, a powerful microscope to find the leak, and a repair kit, which is a set of reinforcing pads with an adhesive bond. It is assumed that with the help of these linings the astronauts will eliminate the detected defects in the housing of the intermediate chamber of the Zvezda module.

For the first time, a small leak was discovered on the ISS in September 2019. Between August and September 2020, when the leak rate increased fivefold, the crew closed all hatches twice to determine the location of the leak. As a result, it was found that the leak was located in the intermediate chamber of the Russian Zvezda module. In October last year, cosmonauts Anatoly Ivanishin and Ivan Wagner, using tea leaves, discovered a crack 4.5 cm long.The crack was temporarily sealed with heat-resistant tape, and then a patch of rubber and aluminum foil was applied, but the leak was not completely eliminated. In December, it became known that the astronauts were looking for another place of air leakage, in the intermediate chamber.

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