The International Space Station (ISS) experienced an air leak in its Zvezda module, first detected in 2019.

The leak was found in the service module's intermediate chamber, with Russian cosmonauts identifying its possible source.

The air leak was detected in the Russian segment of the ISS, but posed no threat to the crew or station.

A crack in Zvezda and non-through cracks on Dawn caused the air leak.

The leak was not due to manufacturing defects or metal fatigue.

The ISS is aging and regularly experiences technical issues.

Russian cosmonauts found the air leak in the Zvezda unit in December.

The leak was found in the Zvezda unit's middle chamber, with repair materials to be sent on a Progress cargo vehicle.

NASA considered isolating the Zvezda module, but Roscosmos deemed concerns unfounded.

The air leak was detected in September 2019, with a related crack found in the Zvezda module camera in October 2020.

Roscosmos announced a plan to eliminate the air leakage, which cosmonauts Peter Dubrov and Anton Shkaplerov located.

The cosmonauts temporarily sealed the air leak and received permanent repair equipment via a Progress cargo ship.

The cosmonauts used a tea bag to find an air leak on the ISS, as the tea leaves moved towards the crack.

Special sealants and sticky tape were used to eliminate leaks and cover microcracks.

Sealant was used to cover two cracks in the Zvezda module during the repair.

The leak rate in the Zvezda module was reduced from 1.14 kg to 0.47 kg per day in March 2021.

The air leakage decreased three times after sealing cracks in April 2022, from 325 grams per day.

The ISS was losing about a kilogram of air daily, exceeding its normal daily loss of 250 grams of oxygen.

The successful repair of the air leak saved approximately $150 billion, the cost of replacing the ISS.

NASA and Roscosmos plan to extend the ISS's operation to 2028 or 2030.

The International Space Station (ISS) experienced an air leak in its Zvezda module, first detected in 2019.

Title:

Content: Ribbon
01 January 07: 01
All news
vk.com / Cosmonaut Ivan Wagner
Moscow, January 1.
Russian cosmonauts Pyotr Dubrov and Anton Shkaplerov discovered in the Zvezda module on the International Space Station, presumably the last place of air leakage.
This was reported in the press service of Roscosmos.
The first small leak was discovered on the ISS back in 2019, since then, astronauts have been monitoring the situation and eliminating cracks in the hull.
Experts know how to return the module tightness.
This will be done as soon as Progress delivers the necessary equipment to orbit.
“Russian cosmonauts Peter Dubrov and Anton Shkaplerov found a possible last place of air leakage in the intermediate chamber of the service module“ Star ” of the Russian segment of the ISS ”, — stated in the message.
Russian President Vladimir Putin previously admitted the possibility of continuing the operation of the ISS after 2024.
This is necessary to maintain high launch activity.
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The leak was found in the service module's intermediate chamber, with Russian cosmonauts identifying its possible source.

The air leak was detected in the Russian segment of the ISS, but posed no threat to the crew or station.

Title:

Content: NEWS
NEWS
February 28, 20: 41
Science
Roscosmos reported air leakage on the Russian segment of the ISS
Photo: telegram channel "State Corporation" Roscosmos "
Air leakage occurred on the Russian segment of the ISS, the crew and the station itself is not threatened.
This writes TASS with reference to the press service of Roscosmos.
“Indeed, experts fix the leakage of air on board the ISS.
The crew regularly carries out work to find and eliminate possible leakage sites, and the data coming from the station are transmitted for analysis to specialists in the normal mode, ” the state corporation said.
According to "Interfax" with reference to the head of the NASA program on the ISS Joel Montalbano, the leak is observed in the tail part of the ISS.
“We saw that the leak increased about a week before the last launch of Progress and its docking with the station, ” he said.
The head of the NASA program on the ISS said that the air in the transition chamber of the Zvezda module began to leave twice as fast.
According to Montalbano, experts are in contact with Russian colleagues on the next steps.
However, this situation does not affect the safety of the crew, he said.
Last year, Russian cosmonauts Oleg Kononenko and Nikolai Chub in outer space disconnected the faulty circuit of the additional radiator on the module "Science" from the main circuit of the module.
Before that, they went into outer space, opening the exit hatch of the module "Search" of the International Space Station.
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A crack in Zvezda and non-through cracks on Dawn caused the air leak.

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Content: Links for simplified access
ISS crew reports smoke and smell of burnt plastic
In the Russian module “Zvezda ” on the International space station (ISS) last night worked fire alarm, reports RIA“ Novosti ” with reference to the negotiations of the crew with the Earth, which broadcasts NASA.
Around five in the morning Moscow time, cosmonaut Oleg Novitsky told the Mission Control Center about the smoke and smell of burnt plastic.
After that, the devices showed the presence of harmful substances in the area of the medical cabinet in the Zvezda module.
French astronaut Tom Pesquet said that the smell of burnt plastic or electronics also penetrated the American segment of the ISS due to the working ventilation.
The source of the smoke and smell has not yet been identified.
The ISS included a system for removing harmful impurities.
Later, Roscosmos said that the smoke sensor and alarm system worked on the ISS “during automatic recharging of batteries. ”
Currently, all systems of the station are working normally, the department notes.
The Russian service module Zvezda docked to the ISS in July 2000.
Its main frame was built in the 1980s as the core of the Mir-2 space station, which was to replace the Mir station, but then it was decided to use it in the ISS program.
Zvezda allows a crew of three cosmonauts to stay in space, and the module can also dock with the Progress cargo ship, which once every three months delivers the necessary supplies to the station and adjusts its orbit.
In the fall of 2019, an air leak was recorded on the ISS.
A year later, the leakage rate increased fivefold.
Sequential sealing of the station compartments allowed us to establish that the cause of the leak was a crack in the Russian segment of the ISS - Zvezda.
The astronauts sealed it with a sealant, but the air leak continued.
Recently, during the survey of the International Space Station, cosmonauts found non-through cracks on the oldest module - "Dawn".
At the end of July, a meeting of the Presidium of the Scientific and Technical Council of Roscosmos took place, where it was noted that the station is breathing on incense.
The International Space Station will expire in 2024.
Earlier, Vladimir Solovyov, General Designer of the Energia Rocket and Space Corporation, predicted an avalanche of failure of numerous elements at the station after 2025.
This mainly concerns the tightness of the housing and complex computing facilities that have developed their resource, Solovyov noted.
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The leak was not due to manufacturing defects or metal fatigue.

Title:

Content: NEWS
NEWS
6: 05 PM
Science
Roscosmos said that the causes of microcracks on the ISS are not yet known
Photo: telegram channel "State Corporation" Roscosmos "
The question of the causes of microcracks on the International Space Station (ISS) is still open.
This was announced by the executive director of Roscosmos for manned space programs Sergey Krikalev in an interview with Gazeta.ru.
Krikalev noted that the pressure inside the station varies depending on temperature, humidity, oxygen consumption and carbon dioxide emissions.
And it changes in "a much wider range than from these leaks."
“To see a very small slope of the overall trajectory, it takes time.
You will not see these changes on daily schedules.
Since these are microcracks, no leak detectors detect them.
Nevertheless, we were able to determine the compartment, some of the microcracks are localized, repair work is being carried out, ” Krikalev explained.
According to him, the effect of metal fatigue has nothing to do with it - cracks were not found in loaded places.
Also, according to Krikalev, a number of solutions have been developed to eliminate leaks, but it has not yet been possible to do this until the end.
“We tried to cover these places with a special sticky tape, then we used special sealants.
On Earth, a special technological operation has been developed how to do it.
Leaks decreased, but did not disappear until the end, ” the expert said.
Earlier it became known that the ISS evaded space debris with the help of engines of the Russian module “Star ”.
The engines of the module were turned on at 18: 00 Moscow time.
They worked 21.5 seconds and gave a pulse of 0.3 meters per second.
Currently, the crew of the 69th long-term expedition is working on the ISS, consisting of cosmonauts of the state corporation Sergei Prokopyev, Dmitry Petelin and Andrei Fedyaev, as well as NASA astronauts Francisco Rubio, Stephen Bowen and Woody Hoburg and astronaut of the United Arab Emirates Sultan al-Neyadi.
ISS dodged space debris – “Roscosmos ”
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The ISS is aging and regularly experiences technical issues.

Title:

Content: 29 Feb, 2024 11:18

Russia comments on space station leak

A NASA official had previously reported that air loss from the Zvezda module had doubled

Air leaking from a segment of the International Space Station (ISS) poses no risk to its crew or the orbital outpost, the Russian space agency Roscosmos has said.

A NASA official had previously reported that the rate at which air was escaping from the satellite's Russian Zvezda module under certain circumstances had doubled. The situation is under control and being constantly monitored, the Roscosmos told Interfax on Wednesday, when asked about remarks by NASA’s ISS program manager, Joel Montalbano,.

”The aging of the station’s structure and the growing need for repair and maintenance work on board require a significant portion of the crew’s time,” Roscosmos said.

Montalbano mentioned the issue during this week’s briefing on the upcoming SpaceX Crew-8 mission, which is scheduled for launch on Friday.

”There is an area in the aft end of the International Space Station. [There is] a small leak. We’ve seen this leak increase about a week before the recent Progress launch and docking,” he said, referring to a Russian automatic supply freighter.

The volume of lost air has increased to about two pounds a day, compared to a pound a day previously, Montalbano said.

”The hatch is closed in that area. It’s not an impact on Crew-8, but I didn’t want anyone to be surprised, if they hear about that later,” he explained.

The use of the module for retrieving the Progress shipment didn’t pose any issues in terms of the leak, he said. The next opening of the hatch is expected in April. While it’s closed, the rest of the station is “solid.”

Technical issues at the ISS are being reported on a regular basis. Roscosmos has said the age of the station is a key reason why it is developing plans for a new purely Russian-manned orbital structure as an alternative to participating in the international project.

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Russian cosmonauts found the air leak in the Zvezda unit in December.

Title:

Content: Possible location of air leak from the International Space Station
Space
International Space Station
Copy Link https: / / www.rt.com / s7a8
The media office of the Roscosmos Foundation announced that the Russian cosmonauts discovered in the unit "Zvezda", the possible place of air leakage from the International Space Station.
According to the information office, the materials and equipment needed to repair this place will be sent aboard the Progress cargo vehicle.
"The equipment and materials necessary to stop air leakage will be sent with the first Progress cargo vehicle launched to the International Space Station, to solve this problem once and for all," the statement said.
Astronauts Peter Dobrov and Anton Shkaplerov discovered the possible location of the air leak in December in the middle chamber of the Zvezda unit.
NASA has said it is considering isolating the Zvezda module completely if necessary.
The Roscosmos media office commented: “The concerns of our partners are unfounded and surprising. ”
Source: Novosti
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The leak was found in the Zvezda unit's middle chamber, with repair materials to be sent on a Progress cargo vehicle.

NASA considered isolating the Zvezda module, but Roscosmos deemed concerns unfounded.

The air leak was detected in September 2019, with a related crack found in the Zvezda module camera in October 2020.

Title:

Content: The Russian module of the ISS “Zvezda ” can be completely isolated due to air leakage
reads: 670
23.01.2022 23: 30
The Russian Zvezda module, which is one of the modules of the Russian segment of the International Space Station, could be permanently isolated due to air leakage.
This was reported by NASA Director for the ISS Robin Gatens, reports “Interfax ”.
She said that the situation with the module does not yet pose a serious threat to the ISS, but in the worst case, is considering the option of complete isolation of the “Star ”.
According to Gatens, NASA and Roscosmos are working together to eliminate air leakage in the module, but due to the small size of the crack, it is difficult to detect detectors and ultrasonic diagnostic tools.
In turn, Roscosmos said that the concern of their colleagues on the ISS “is not justified and is surprising. ”
According to the Russian Ministry, the cosmonauts found the site of the leak at the end of last month.
They promise to fix the problem when the Progress cargo ship delivers materials to the ISS.
Note that in the Russian segment of the space station repeatedly there were problems and other problems.
For the first time, an air leak in one of the modules was detected in September 2019, in October 2020, a crack was detected in the camera of the Zvezda module.
Recall that earlier it was reported that at the end of July 2021, after docking the Russian module “Science ” to the International space station, it turned on the engines, because of which the station began to move chaotically and for a time lost control over the orientation of the ISS.
Wikipedia: The International Space Station, Inc.
International Space Station (ISS).
ISS) is a manned orbital station used as a multi-purpose space research complex; it is operated from the end of 1998 to the present (the countries agreed to operate through 2024 inclusive, the extension of the period of operation to 2028, 2030 is being considered).
The ISS is a joint international project involving 14 countries: Russia, the United States, Japan, Canada and members of the European Space Agency Belgium, Germany, Denmark, Spain, Italy, the Netherlands, Norway, France, Switzerland, Sweden (originally the participants were Brazil and the United Kingdom).
The ISS is controlled by the Russian segment from the Space Flight Control Center in Korolev, the American segment from the Lyndon Johnson Flight Control Center in Houston.
The European Columbus and Japanese Kibo modules are controlled by the European Space Agency (Oberpfaffenhofen, Germany) and the Japan Aerospace Exploration Agency (Tsukuba).
There is a constant exchange of information between the centers.
Photofact

Roscosmos announced a plan to eliminate the air leakage, which cosmonauts Peter Dubrov and Anton Shkaplerov located.

Title:

Content: Ribbon
January 19 00: 04
All news
pxhere.com
Moscow, January 18.
Astronauts of the Russian segment of the International Space Station have discovered a possible place of air leakage in the chamber of the Zvezda module.
The relevant data follows from the material published by the press service of Roscosmos.
It is known that soon the nearest cargo ship "Progress" will be delivered to the ISS means of eliminating leakage.
After that, the Russian cosmonauts will immediately begin the final elimination of the cause of the leak.
"The means of eliminating non-hermeticity are planned to be delivered on the nearest Progress cargo ship, after which the cosmonauts will begin the final elimination of the leak," Roscosmos said.
Earlier, Russian cosmonauts Peter Dubrov and Anton Shkaplerov discovered a potential last place of air leakage in the Zvezda module.
Specialists will be able to restore its tightness as soon as Progress delivers the necessary equipment to the station.
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The cosmonauts temporarily sealed the air leak and received permanent repair equipment via a Progress cargo ship.

The cosmonauts used a tea bag to find an air leak on the ISS, as the tea leaves moved towards the crack.

Title:

Content: How did a bag of tea help astronauts save $150 billion?
How did a bag of tea help astronauts save $150 billion?
A few years ago, a torn bag helped save the ISS
The International Space Station was built in 1998 for $150 billion.
Every year, another 3-4 billion dollars are spent to maintain its operability, but the design is already very old and needs repair more and more often.
For example, in August 2020, a pressure drop was recorded aboard the space station, which is a sign of an air leak.
All astronauts and cosmonauts on board were isolated in the Russian Zvezda module.
After some time, it was found out that the air-permeable crack was in the module in which the entire crew temporarily settled.
One of the Russian cosmonauts was able to quickly find the place of leakage with the help of a usual tea bag.
Oxygen on the ISS
According to the India Times, the space station loses about 250 grams of oxygen every day and this is normal - it is difficult to achieve complete tightness.
In the event of an acute shortage of oxygen, it is delivered by cargo ships, but is most often produced directly at the station.
In the second case, members of the ISS use electrolysis - an electric current is passed through the water, as a result of which oxygen appears.
To do this, on board there is a life support system ECLSS, which not only monitors the operation of the station, but also provides people with access to water, protects against fires and so on.
ECLSS technical director Robyn Carrasquillo once praised Russia for using a way to extract moisture from the air, even in the old Salyut and Mir spacecraft.
ECLSS system
Oxygen leakage to the ISS
In August 2020, the space station began to lose about a kilogram of air per day.
The situation was serious, but the lives of the ISS crew were not threatened.
Astronauts from different countries temporarily began to live in the Russian module “Zvezda ” and for four days searched for a leak in other parts of the station.
The search did not give any results, so it became clear that the gap is in the Zvezda module launched more than 20 years ago.
The leak could have occurred for various reasons, for example, due to the collision of the ISS with space debris, which is a lot in near-Earth space.
Also, it was not excluded that seals simply peeled off from the walls of the station, which just do not allow oxygen to leak.
ISS module "Zvezda"
Search for the place of oxygen leakage
An unusual way to find the leak was found by cosmonaut Anatoly Ivanishin.
He installed several cameras in the module and opened the tea bag.
After some time, the ISS members noticed that the tea leaves began to move slowly towards one of the metal walls of the module.
After studying the trajectory of the leaves, the space crew quickly found the crack formed on the ISS.
First, they taped this place with tape, and then got permission to use a drill and sealant.
It is known that thanks to the trick with a package of tea, the astronauts managed to save about 150 billion dollars.
Russian cosmonaut Anatoly Ivanishin
The International Space Station is aging and will one day become completely unusable – that ’ s a fact.
New cracks were discovered even in 2021.
Especially there are many of them in the Russian module “Zarya ”, which was launched into space in 1998 and today is the oldest part of the station.
More recently, Vladimir Solovyov, General Designer of the Energia Rocket and Space Corporation, announced his concerns about the safety of the station.
It is especially frightening that the station is planned to be used even after 2025.
In theory, the use of the old station could cause a terrible disaster.
ISS module "Zarya"
Finally, I note that to replace the old module "Dawn" it was planned to send the module "Science".
But it became an independent module and docked to the ISS in July 2021.
The docking was far from perfect - the module deployed the station at 45 degrees.
19 october 2021 /
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Special sealants and sticky tape were used to eliminate leaks and cover microcracks.

Sealant was used to cover two cracks in the Zvezda module during the repair.

Title:

Content: In another module of the ISS astronauts found cracks
09: 29 08 / 30 / 2021
Astronauts discovered new non-through cracks in the ISS module.
© Photo: Roscosmos
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General designer of the Rocket and Space Corporation Energia, the head of the flight of the Russian segment of the ISS, cosmonaut, twice Hero of the Soviet Union Vladimir Solovyov said that cosmonauts during the survey of the Russian segment of the ISS discovered new non-through cracks in the first and oldest module of the Zarya station.
"Several such places with non-through cracks were found in the Zarya module," Solovyov told RIA Novosti.
This situation, according to Solovyov, he does not like.
Previously discovered through cracks in another module “Star ”, according to the General designer, over time can spread and in the“ Dawn ”.
For the first time, an air leak at the station was detected in August last year.
After a while, the crack was closed, the pressure began to decrease more slowly.
In March 2021, cosmonauts carried out repair and restoration work in the Zvezda module, covering two cracks with sealant.
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The leak rate in the Zvezda module was reduced from 1.14 kg to 0.47 kg per day in March 2021.

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Russia and the United States will determine the causes of cracks that are looking for on the ISS from 2020
Russian and American experts during the meeting determine the reasons that led to the formation of cracks in the transition chamber (PrK) of the service module "Star" of the Russian segment of the ISS.
This was announced on Wednesday by the chief specialist (RSC) "Energy" (included in).
Photo: TASSTASS
“Now there is a meeting with American partners, why they [cracks] formed.
The first factor is age, <... > the second is technological solutions that eventually led to cracks, "Spirin said at the XLVII Academic Readings on Cosmonautics in memory of S. P. Korolev.
Video of the day
According to him, the leakage rate for the station is 325 grams per day.
“We stayed until 2019.
When the PrK was closed, we entered this norm, "the expert explained, stressing that if the camera is isolated and opened extremely rarely, then you can continue to fly to the ISS.
According to the presentation presented by Spirin, since the start of work on the search for the leak in September 2020, the damage to the shell has been localized and eliminated in three places.
"As a result of the work, the rate of air leakage from PrK was consistently reduced from 1.14 kg per day to 0.47 kg per day on a permanent basis and to 0.3 kg per day - on a temporary basis," the presentation emphasizes.
In March 2021, cosmonauts Roscosmos and Sergey Kud-Sverchkov carried out repair and restoration work on the housing of the Zvezda module, where they found a crack and a number of possible leaks.
All actions were carried out under the leadership of the Main Operational Group of the ISS Russian Segment and RSC Energia engineers and coordinated with specialists.
In mid-April 2022, a Roscosmos cosmonaut told reporters that air leakage had decreased three times after sealing the cracks.
XLVII Academic Readings on Cosmonautics in memory of S. P. Korolev (Royal Readings) are held at the Bauman Moscow State Technical University from January 24 to 27.

The air leakage decreased three times after sealing cracks in April 2022, from 325 grams per day.

The ISS was losing about a kilogram of air daily, exceeding its normal daily loss of 250 grams of oxygen.

The successful repair of the air leak saved approximately $150 billion, the cost of replacing the ISS.

NASA and Roscosmos plan to extend the ISS's operation to 2028 or 2030.


The air leak at the International Space Station was first detected in 2019, with the leakage rate increasing in 2020.

The leak was found to be located in the Russian segment of the ISS, specifically in the Zvezda module, and was caused by a crack.

The crack was initially suspected to be the result of a miniature meteorite impact, but it was later determined that the cause was likely a manufacturing defect.

The air leak was detected in the Zvezda module, which is the oldest module on the ISS, and it was found that the leak was coming from a backup radiator circuit.

The main thermal control circuit was operating normally despite the leak, and there was no danger to the crew or the station.

The leak was small, but it was significant enough to cause a slight decrease in air pressure on the ISS, and the crew had to work to find and eliminate the leak.

Russian cosmonauts sealed the crack with a special sealant, but the leak continued, and it was later found that the sealant had dried out and failed.

The ISS crew reported smoke and a smell of burnt plastic in the Zvezda module, but the smoke sensor and alarm system worked correctly during automatic battery recharging.

The leak was eventually located and isolated, and repair materials were sent to the ISS via a Progress cargo ship.

The repair was carried out by Russian cosmonauts, who used special sealants to eliminate the leak, and the ISS was able to continue operating safely.

The air leak detection and cause analysis were a collaborative effort between NASA and Roscosmos, and the two agencies worked together to fix the leak.

The ISS is a joint international project involving 14 countries, and its operation is agreed upon through 2024, with an extension to 2028 being considered.

The Russian segment of the ISS is controlled from the Korolev Space Flight Center, and there is a constant exchange of information between the control centers.

The leak detection and repair process highlighted the importance of international cooperation and the need for careful monitoring and maintenance of the ISS.

The air leak at the International Space Station was first detected in 2019, with the leakage rate increasing in 2020.

Title:

Content: Links for simplified access
ISS crew reports smoke and smell of burnt plastic
In the Russian module “Zvezda ” on the International space station (ISS) last night worked fire alarm, reports RIA“ Novosti ” with reference to the negotiations of the crew with the Earth, which broadcasts NASA.
Around five in the morning Moscow time, cosmonaut Oleg Novitsky told the Mission Control Center about the smoke and smell of burnt plastic.
After that, the devices showed the presence of harmful substances in the area of the medical cabinet in the Zvezda module.
French astronaut Tom Pesquet said that the smell of burnt plastic or electronics also penetrated the American segment of the ISS due to the working ventilation.
The source of the smoke and smell has not yet been identified.
The ISS included a system for removing harmful impurities.
Later, Roscosmos said that the smoke sensor and alarm system worked on the ISS “during automatic recharging of batteries. ”
Currently, all systems of the station are working normally, the department notes.
The Russian service module Zvezda docked to the ISS in July 2000.
Its main frame was built in the 1980s as the core of the Mir-2 space station, which was to replace the Mir station, but then it was decided to use it in the ISS program.
Zvezda allows a crew of three cosmonauts to stay in space, and the module can also dock with the Progress cargo ship, which once every three months delivers the necessary supplies to the station and adjusts its orbit.
In the fall of 2019, an air leak was recorded on the ISS.
A year later, the leakage rate increased fivefold.
Sequential sealing of the station compartments allowed us to establish that the cause of the leak was a crack in the Russian segment of the ISS - Zvezda.
The astronauts sealed it with a sealant, but the air leak continued.
Recently, during the survey of the International Space Station, cosmonauts found non-through cracks on the oldest module - "Dawn".
At the end of July, a meeting of the Presidium of the Scientific and Technical Council of Roscosmos took place, where it was noted that the station is breathing on incense.
The International Space Station will expire in 2024.
Earlier, Vladimir Solovyov, General Designer of the Energia Rocket and Space Corporation, predicted an avalanche of failure of numerous elements at the station after 2025.
This mainly concerns the tightness of the housing and complex computing facilities that have developed their resource, Solovyov noted.
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SM
MD
LG

The leak was found to be located in the Russian segment of the ISS, specifically in the Zvezda module, and was caused by a crack.

The crack was initially suspected to be the result of a miniature meteorite impact, but it was later determined that the cause was likely a manufacturing defect.

Title:

Content: Soyuz manufacturing defect causes air leak at International Space Station
Kazakhstan News Agency / Astana / September 3 - According to the Russian satellite network reported on the 3rd, Russian rocket space sources said that the manufacturing defect is the cause of the "Soyuz MS-09" spacecraft leak.
There was an air leak on the International Space Station on August 30.
The astronauts examined all the compartments and found tiny cracks in the Soyuz MS-09 spacecraft.
It is located in the living module, not in the return module, so it will not affect the return of the spacecraft to Earth.
It was previously thought that the fissure was the result of a miniature meteorite hitting the spacecraft.
The next night, Russian cosmonauts used special sealant to fill the hole.
The source said: "The cause of the crack in the inner shell of the living module has been identified and it has appeared on Earth.
The person responsible for the fault was identified. "
According to another source, the crew likely sealed the leak with special glue after realizing the mistake, so it was not detected during the pre-launch check and the spacecraft ’ s first two months of orbital flight.
"However, the glue later dried out and was squeezed out, revealing cracks," he said.
The Russian space agency said a special committee would investigate and determine the cause of the accident.
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The air leak was detected in the Zvezda module, which is the oldest module on the ISS, and it was found that the leak was coming from a backup radiator circuit.

Title:

Content: Russian space corporation reports leak in its module of International Space Station

MOSCOW (AA): The Russian Space Corporation (Roscosmos) has reported a leak in its module of the International Space Station (ISS).

There was a leak of coolant from the backup radiator circuit of the multipurpose laboratory module “Science,” it said in a statement.

The main thermal control circuit of the module operates normally, providing comfortable conditions in the residential area and there is no danger to the crew and the station, it said.

The main thermal control circuit was operating normally despite the leak, and there was no danger to the crew or the station.

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Content: Russia says coolant leak from International Space Station backup line, crew safe
The Russian space agency Roscosmos confirmed that the coolant leaked from a spare external cooling device at the new Russian science laboratory, confirming that the main thermal control system in the laboratory "works normally"
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Russian officials said on Monday that coolant had leaked from a backup line at the International Space Station and that there was no danger to the crew or the site.
The Russian space agency Roscosmos reported that the coolant leaked from a backup external cooling device at the new Russian science laboratory, confirming that the laboratory's main thermal control system was "operating normally."
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Roscosmos said: "There is no danger to the crew and the station."
While NASA confirmed there was no threat to the station's seven-member crew and operations were continuing as usual, Roscosmos said engineers were investigating the cause of the leak.
The accident comes on the heels of a coolant leak from a Russian spacecraft parked at the station recently.
Officials said small meteorites were the cause of such leaks, such as a leak of coolant from a Soyuz capsule that docked at the station in December, and another similar leak from the supply ship Progress was discovered in February.
A Russian investigation has concluded that the leaks may have been caused by the impact of small meteorites, not manufacturing defects.
The Soyuz capsule leak led to a lengthy stay for NASA astronaut Frank Rubio and his Russian colleagues, Sergei Prokopev and Dmitry Beitlin, who spent 371 days in orbit instead of six months.
A replacement capsule was sent to the station to bring back the astronauts.
The space station, which served as a symbol of international cooperation in the post-Cold War era, is now one of the remaining areas of cooperation between Russia and the West amid tensions over Moscow ’ s war in Ukraine.
NASA and its partners hope to continue operating the orbital station until 2030.
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The leak was small, but it was significant enough to cause a slight decrease in air pressure on the ISS, and the crew had to work to find and eliminate the leak.

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Content: NEWS
NEWS
February 28, 20: 41
Science
Roscosmos reported air leakage on the Russian segment of the ISS
Photo: telegram channel "State Corporation" Roscosmos "
Air leakage occurred on the Russian segment of the ISS, the crew and the station itself is not threatened.
This writes TASS with reference to the press service of Roscosmos.
“Indeed, experts fix the leakage of air on board the ISS.
The crew regularly carries out work to find and eliminate possible leakage sites, and the data coming from the station are transmitted for analysis to specialists in the normal mode, ” the state corporation said.
According to "Interfax" with reference to the head of the NASA program on the ISS Joel Montalbano, the leak is observed in the tail part of the ISS.
“We saw that the leak increased about a week before the last launch of Progress and its docking with the station, ” he said.
The head of the NASA program on the ISS said that the air in the transition chamber of the Zvezda module began to leave twice as fast.
According to Montalbano, experts are in contact with Russian colleagues on the next steps.
However, this situation does not affect the safety of the crew, he said.
Last year, Russian cosmonauts Oleg Kononenko and Nikolai Chub in outer space disconnected the faulty circuit of the additional radiator on the module "Science" from the main circuit of the module.
Before that, they went into outer space, opening the exit hatch of the module "Search" of the International Space Station.
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Russian cosmonauts sealed the crack with a special sealant, but the leak continued, and it was later found that the sealant had dried out and failed.

The ISS crew reported smoke and a smell of burnt plastic in the Zvezda module, but the smoke sensor and alarm system worked correctly during automatic battery recharging.

The leak was eventually located and isolated, and repair materials were sent to the ISS via a Progress cargo ship.

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Content: Possible location of air leak from the International Space Station
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International Space Station
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The media office of the Roscosmos Foundation announced that the Russian cosmonauts discovered in the unit "Zvezda", the possible place of air leakage from the International Space Station.
According to the information office, the materials and equipment needed to repair this place will be sent aboard the Progress cargo vehicle.
"The equipment and materials necessary to stop air leakage will be sent with the first Progress cargo vehicle launched to the International Space Station, to solve this problem once and for all," the statement said.
Astronauts Peter Dobrov and Anton Shkaplerov discovered the possible location of the air leak in December in the middle chamber of the Zvezda unit.
NASA has said it is considering isolating the Zvezda module completely if necessary.
The Roscosmos media office commented: “The concerns of our partners are unfounded and surprising. ”
Source: Novosti
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The repair was carried out by Russian cosmonauts, who used special sealants to eliminate the leak, and the ISS was able to continue operating safely.

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Content: NEWS
NEWS
6: 05 PM
Science
Roscosmos said that the causes of microcracks on the ISS are not yet known
Photo: telegram channel "State Corporation" Roscosmos "
The question of the causes of microcracks on the International Space Station (ISS) is still open.
This was announced by the executive director of Roscosmos for manned space programs Sergey Krikalev in an interview with Gazeta.ru.
Krikalev noted that the pressure inside the station varies depending on temperature, humidity, oxygen consumption and carbon dioxide emissions.
And it changes in "a much wider range than from these leaks."
“To see a very small slope of the overall trajectory, it takes time.
You will not see these changes on daily schedules.
Since these are microcracks, no leak detectors detect them.
Nevertheless, we were able to determine the compartment, some of the microcracks are localized, repair work is being carried out, ” Krikalev explained.
According to him, the effect of metal fatigue has nothing to do with it - cracks were not found in loaded places.
Also, according to Krikalev, a number of solutions have been developed to eliminate leaks, but it has not yet been possible to do this until the end.
“We tried to cover these places with a special sticky tape, then we used special sealants.
On Earth, a special technological operation has been developed how to do it.
Leaks decreased, but did not disappear until the end, ” the expert said.
Earlier it became known that the ISS evaded space debris with the help of engines of the Russian module “Star ”.
The engines of the module were turned on at 18: 00 Moscow time.
They worked 21.5 seconds and gave a pulse of 0.3 meters per second.
Currently, the crew of the 69th long-term expedition is working on the ISS, consisting of cosmonauts of the state corporation Sergei Prokopyev, Dmitry Petelin and Andrei Fedyaev, as well as NASA astronauts Francisco Rubio, Stephen Bowen and Woody Hoburg and astronaut of the United Arab Emirates Sultan al-Neyadi.
ISS dodged space debris – “Roscosmos ”
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The air leak detection and cause analysis were a collaborative effort between NASA and Roscosmos, and the two agencies worked together to fix the leak.

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Content: The Russian module of the ISS “Zvezda ” can be completely isolated due to air leakage
reads: 670
23.01.2022 23: 30
The Russian Zvezda module, which is one of the modules of the Russian segment of the International Space Station, could be permanently isolated due to air leakage.
This was reported by NASA Director for the ISS Robin Gatens, reports “Interfax ”.
She said that the situation with the module does not yet pose a serious threat to the ISS, but in the worst case, is considering the option of complete isolation of the “Star ”.
According to Gatens, NASA and Roscosmos are working together to eliminate air leakage in the module, but due to the small size of the crack, it is difficult to detect detectors and ultrasonic diagnostic tools.
In turn, Roscosmos said that the concern of their colleagues on the ISS “is not justified and is surprising. ”
According to the Russian Ministry, the cosmonauts found the site of the leak at the end of last month.
They promise to fix the problem when the Progress cargo ship delivers materials to the ISS.
Note that in the Russian segment of the space station repeatedly there were problems and other problems.
For the first time, an air leak in one of the modules was detected in September 2019, in October 2020, a crack was detected in the camera of the Zvezda module.
Recall that earlier it was reported that at the end of July 2021, after docking the Russian module “Science ” to the International space station, it turned on the engines, because of which the station began to move chaotically and for a time lost control over the orientation of the ISS.
Wikipedia: The International Space Station, Inc.
International Space Station (ISS).
ISS) is a manned orbital station used as a multi-purpose space research complex; it is operated from the end of 1998 to the present (the countries agreed to operate through 2024 inclusive, the extension of the period of operation to 2028, 2030 is being considered).
The ISS is a joint international project involving 14 countries: Russia, the United States, Japan, Canada and members of the European Space Agency Belgium, Germany, Denmark, Spain, Italy, the Netherlands, Norway, France, Switzerland, Sweden (originally the participants were Brazil and the United Kingdom).
The ISS is controlled by the Russian segment from the Space Flight Control Center in Korolev, the American segment from the Lyndon Johnson Flight Control Center in Houston.
The European Columbus and Japanese Kibo modules are controlled by the European Space Agency (Oberpfaffenhofen, Germany) and the Japan Aerospace Exploration Agency (Tsukuba).
There is a constant exchange of information between the centers.
Photofact

The ISS is a joint international project involving 14 countries, and its operation is agreed upon through 2024, with an extension to 2028 being considered.

The Russian segment of the ISS is controlled from the Korolev Space Flight Center, and there is a constant exchange of information between the control centers.

The leak detection and repair process highlighted the importance of international cooperation and the need for careful monitoring and maintenance of the ISS.