Author Topic: Soyuz MS-22 & Progress MS-21 coolant leaks : Dec 2022 & Feb 2023  (Read 127947 times)

Offline zubenelgenubi

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Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #20 on: 12/15/2022 07:09 am »
Cross-post:
From the morning DPC.  Station is experiencing and will continue to experience S- and Ku band communications issues/blockages due the solar array SARJs or TARJs (hard to tell which because of static) being locked due to contamination concerns from the Soyuz.  The crew asked about power concerns and were told there are none.  A scheduled PAO event was cancelled. All window covers are to remain closed due to contamination concerns as well.
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Offline zubenelgenubi

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Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #21 on: 12/15/2022 07:12 am »
<snip>
The high beta angle is pushing Soyuz MS-22's SOTR system harder than other times though it had to be designed for these conditions. This I seem to recall not the first SOTR loop failure in the history of Soyuz, Progress and Soyuz derived station Service module components.
Might a temporary shade be rigged, as was for Skylab?

Can the hatch in the orbial module that cosmonauts use to enter the craft before launch be opened in space to perform a hybrid IVA/EVA to extend and secure a shade on the outside of the Soyuz?

Or, reprogram the solar tracking function, or the standard ISS attitude, and use the USOS solar panels,and/or the ISS body, to shade the spacecraft, at least some of the time?

Edited
« Last Edit: 12/15/2022 07:41 am by zubenelgenubi »
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Offline russianhalo117

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Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #22 on: 12/15/2022 07:31 am »
<snip>
The high beta angle is pushing Soyuz MS-22's SOTR system harder than other times though it had to be designed for these conditions. This I seem to recall not the first SOTR loop failure in the history of Soyuz, Progress and Soyuz derived station Service module components.
Might a temporary shade be rigged, as was for Skylab?

Or, reprogram the solar tracking function, or the standard ISS attitude, and use the USOS solar panels,and/or the ISS body, to shade the spacecraft, at least some of the time?
Not likely as Soyuz doesn'thave handrails so securing is difficult and how will you get one to station.
As for the latter possibly however this would be at the risk to what they typically shade during high beta angle. This topic about shading during high beta angle has come up before and should be in the founding Chris's ISS archives vault.

We will know more soon when the information becomes available. Some of Scott Manley's graphics in his just uploaded video are outdated and apply only to very early ISS.

The next Soyuz in Baikonur is essentially the available standby rescue spacecraft. It could be pulled out of storage in the hall and its processing can be accelerated like the times of the launch incidents.

Soyuz TM-9 was the only time the rescue Soyuz and its single person crew was docked to an available Soyuz and prepared for launch incase an emergency EVA wasnt deemed successful during the reattachment of the descent modules TPS insulation which was pulled loose during the fairing jettison sequence interfering with a suite of onboard automatic sensors.
« Last Edit: 12/15/2022 07:57 am by russianhalo117 »

Online catdlr

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Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #23 on: 12/15/2022 07:35 am »
Will Leaking Russian Spaceship Leave The Crew Stranded In Space?



Quote
Dec 14, 2022
As a spacewalk was being planned to move a radiator onto a new module on the space station a cooling system on the Soyuz MS-22 spacecraft was seen leaking into space. This resulted in the space walk being cancelled and the crew investigating this problem while trying to limit effects on the station's scientific experiments.
« Last Edit: 12/15/2022 07:36 am by catdlr »
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Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #24 on: 12/15/2022 08:10 am »
Some reports (eg Ars) are speculating that the coolant is ammonia, presumably because it is used in the US orbital segment external loop (the internal loop uses water).

However note that the Russian designs have preferred to use silicone oil in the external loop (eg mentioned re:Mir on page 43, but AIUI the ROS currently uses it) and water/glycol for the internal loop (see page 7).

While ammonia will evaporate harmlessly (as it has in previous ISS ammonia leak incidents), silicone oil would not.   :-\

From page 20 of this document, there a description of the thermal control system on the Russian segment of the ISS, confirming the presumption that the ROS uses silicone oil in the external loop. Ammonia is mentioned as well.

Quote
Two redundant internal thermal loops are filled with Triol, water with a 30 percent solution of glycerin, which lowers the freezing point to –7°C. Triol also contains antifreeze, biocide, and ultraviolet-light-sensitive additives to aid in leak detection. Internal loops are considered cooling loops. Two redundant external thermal loops are filled with polymethyl siloxane. External thermal loops interface with internal loops. External thermal loops are called heating loops. These loops interface with the body-mounted radiators which contain ammonia heat pipes.

Soyuz is covered on that same page, but only says: "Liquid coolant was a water/glycol mixture" and is described from a Soviet era perspective.
« Last Edit: 12/15/2022 08:22 am by theinternetftw »

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Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #25 on: 12/15/2022 08:30 am »

Online dawei

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Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #26 on: 12/15/2022 08:36 am »
Can someone please confirm that the current day Soyuz spacecraft uses water/glycol for cooling? Or if not, what is used today?

Offline russianhalo117

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Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #27 on: 12/15/2022 08:51 am »
Can someone please confirm that the current day Soyuz spacecraft uses water/glycol for cooling? Or if not, what is used today?
Per the linked NASA ISS document in thread reply 24.  The three coolant types are listed in quotes also in reply 24. The coolants used have not changed since the first flight
of the TM spacecraft. But the SOTR system was modified and enlarged for TMA series.

People forget to read the earlier posts before posting.
« Last Edit: 12/15/2022 09:03 am by russianhalo117 »

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Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #28 on: 12/15/2022 08:54 am »
Can someone please confirm that the current day Soyuz spacecraft uses water/glycol for cooling? Or if not, what is used today?

Katya Pavluschenko is reporting Isooctane:

https://twitter.com/katlinegrey/status/1603319799903551488

From the linked document: "Coolants LZ-TK-2 and PMS-1.5r are interchangeable and are used when refueling STR of transport manned spacecraft Soyuz and cargo spacecraft Progress [...] RSC Energia, together with the research laboratory of CJSC Shaumyan Plant, developed a low-temperature coolant LZ-TK-2. When developing a coolant as base was chosen 2,2,4-trimethylpentane (trade name "Isooctane"). The choice of isooctane is due to its availability, well-established production in connection with the widespread use as a reference liquid in the analysis of gasolines for octane number."

Organosiloxanes (silicon oils, such as the aforementioned PMS-1.5r) are used on the RS modules, and were used on Mir too, due to their better characteristics regarding fire hazards. Seems they are not used on Soyuz.

EDIT: Also attaching a schematic of the Soyuz's coolant loops.
« Last Edit: 12/15/2022 09:24 am by eeergo »
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Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #29 on: 12/15/2022 09:02 am »
https://blogs.nasa.gov/spacestation/2022/12/15/mission-controllers-assess-soyuz-coolant-leak/

Quote
Mission Controllers Assess Soyuz Coolant Leak

Ground teams at Mission Control in Moscow continue to assess a coolant leak detected from the aft end of the Soyuz MS-22 spacecraft docked to the International Space Station. As a result, the planned Dec.14 Roscosmos spacewalk was canceled to allow time to evaluate the fluid and potential impacts to the integrity of the Soyuz spacecraft.

NASA and Roscosmos will continue to work together to determine the next course of action following the ongoing analysis. The crew members aboard the space station are safe, and were not in any danger during the leak.

The Soyuz MS-22 spacecraft carried NASA astronaut Frank Rubio and Roscosmos cosmonauts Sergey Prokopyev and Dmitri Petelin into space after launching from the Baikonur Cosmodrome in Kazakhstan on Sept. 21.

Learn more about station activities by following the space station blog, @space_station and @ISS_Research on Twitter, as well as the ISS Facebook and ISS Instagram accounts.

Get weekly video highlights at: http://jscfeatures.jsc.nasa.gov/videoupdate/

Get the latest from NASA delivered every week. Subscribe here: www.nasa.gov/subscribe

Author Mark GarciaPosted on December 15, 2022Categories Expedition 68Tags Canadian Space Agency, European Space Agency, International Space Station, Japan Aerospace Exploration Agency, JAXA, NASA, Roscosmos, Soyuz

Photo caption:

Quote
The European robotic arm controlled by cosmonaut Anna Kikina surveys the Soyuz MS-22 crew ship after the detection of a leak that cancelled Wednesday’s spacewalk. Credit: NASA TV

Offline B. Hendrickx

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Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #30 on: 12/15/2022 09:21 am »
Can someone please confirm that the current day Soyuz spacecraft uses water/glycol for cooling? Or if not, what is used today?

Katya Pavluschenko is reporting Isooctane:

https://twitter.com/katlinegrey/status/1603319799903551488

From the quoted article it is not entirely clear what is used: either LZ-T2-K (isooctane-based) or PMS-1,5R (described as an organosilicon compound) (its chemical formula is on p. 94 of the article). The disadvantage of LZ-T2-K is that it is highly flammable (flash point of -9°C), which is why they started looking for alternatives. PMS-1,5R was introduced in the external loop of the Mir space station and is also used in the external loop of the Russian ISS modules. As for Soyuz and Progress, the article says: "LZ-T2-K and PMS-1,5R are interchangeable and used in the thermal control system of Soyuz and Progress". So not clear which if the two is used on Soyuz MS-22.

Online eeergo

Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #31 on: 12/15/2022 09:28 am »
Can someone please confirm that the current day Soyuz spacecraft uses water/glycol for cooling? Or if not, what is used today?

Katya Pavluschenko is reporting Isooctane:

https://twitter.com/katlinegrey/status/1603319799903551488

From the quoted article it is not entirely clear what is used: either LZ-T2-K (isooctane-based) or PMS-1,5R (described as an organosilicon compound) (its chemical formula is on p. 94 of the article). The disadvantage of LZ-T2-K is that it is highly flammable (flash point of -9°C), which is why they started looking for alternatives. PMS-1,5R was introduced in the external loop of the Mir space station and is also used in the external loop of the Russian ISS modules. As for Soyuz and Progress, the article says: "LZ-T2-K and PMS-1,5R are interchangeable and used in the thermal control system of Soyuz and Progress". So not clear which if the two is used on Soyuz MS-22.

Just below that they state: "Both coolants, not being electrolytes, have low corrosivity to all metallic materials used in STR KA. The PMS-1.5r coolant was used for the first time for filling the external circuits of the modules of the Mir orbital station. The PMS-1.5r coolant is used to fill the outer contours of the International Space Station and its modules."

From which one can deduce it is not used on vehicles (probably because the risk is doesn't cumulate as much in exchangable craft compared to permanent modules).
-DaviD-

Online FutureSpaceTourist

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Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #32 on: 12/15/2022 09:55 am »
https://twitter.com/katlinegrey/status/1603312614553034752

Quote
The official statement of Roscosmos:  https://t.me/roscosmos_gk/7875

Google translation:

Quote
According to preliminary information, on Thursday, December 15, there was damage to the outer skin of the instrument and assembly compartment of the Soyuz MS-22 manned spacecraft.

 The crew reported that the warning device of the ship's diagnostic system went off, indicating a pressure drop in the cooling system.  A visual inspection confirmed the leak, after which it was decided to interrupt the planned extravehicular activities by the crew members of the ISS Russian Segment Sergey Prokopiev and Dmitry Petelin.

 To establish the causes of the incident, Anna Kikina, using the camera on the manipulator installed on the Nauka module, photographed and filmed the outer surface of the ship.  The data was transmitted to Earth, the specialists began to study the images.

 At the moment, all systems of the ISS and the ship are operating normally, the crew is safe.  After analyzing the situation, a decision will be made on further actions of both specialists on Earth and members of the crew of the ISS Russian Segment.
 7.9K viewsedited
 Dec 15 at 08:50
« Last Edit: 12/15/2022 09:58 am by FutureSpaceTourist »

Online litton4

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Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #33 on: 12/15/2022 11:02 am »
Could the Canadarm with the OBSS be used to inspect the cause? (MMOD or failure of some sort)
Will it reach?

I'm assuming that the sensor package is dead, so they'd have to place an Astronaut on the boom, which I guess would be considered to be too dangerous (certainly while it's actively leaking)

I guess the other option would be for when it undocks, roll to allow crew on the ISS to take hi res pictures during departure.
(Memories of the Shuttle inspections!)
« Last Edit: 12/15/2022 11:04 am by litton4 »
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Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #34 on: 12/15/2022 11:13 am »
[snip]
As for Soyuz and Progress, the article says: "LZ-T2-K and PMS-1,5R are interchangeable and used in the thermal control system of Soyuz and Progress".

Just below that they state: "Both coolants, not being electrolytes, have low corrosivity to all metallic materials used in STR KA. The PMS-1.5r coolant was used for the first time for filling the external circuits of the modules of the Mir orbital station. The PMS-1.5r coolant is used to fill the outer contours of the International Space Station and its modules."

From which one can deduce it is not used on vehicles (probably because the risk is doesn't cumulate as much in exchangable craft compared to permanent modules).

It is very hard for me to get "[PMS-1,5R] is not used on vehicles" from "LZ-T2-K and PMS-1,5R are interchangeable and used in the thermal control system of Soyuz and Progress."

Trying to use language instincts that imbue unspoken meaning when dealing with machine translated text is probably best avoided.

For what it's worth, I take the second quote above as more general information about PMS-1.5r made stilted by the translation process.

Online eeergo

Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #35 on: 12/15/2022 11:18 am »
[snip]
As for Soyuz and Progress, the article says: "LZ-T2-K and PMS-1,5R are interchangeable and used in the thermal control system of Soyuz and Progress".

Just below that they state: "Both coolants, not being electrolytes, have low corrosivity to all metallic materials used in STR KA. The PMS-1.5r coolant was used for the first time for filling the external circuits of the modules of the Mir orbital station. The PMS-1.5r coolant is used to fill the outer contours of the International Space Station and its modules."

From which one can deduce it is not used on vehicles (probably because the risk is doesn't cumulate as much in exchangable craft compared to permanent modules).

It is very hard for me to get "[PMS-1,5R] is not used on vehicles" from "LZ-T2-K and PMS-1,5R are interchangeable and used in the thermal control system of Soyuz and Progress."

Trying to use language instincts that imbue unspoken meaning when dealing with machine translated text is probably best avoided.

For what it's worth, I take the second quote above as more general information about PMS-1.5r made stilted by the translation process.

Well, I'm using also NK's information and Katya's translation ;) But I agree the information at hand is incomplete, and so it's currently impossible to tell with certainty.
-DaviD-

Offline Rondaz

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Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #36 on: 12/15/2022 11:22 am »
Rob Navias says the European Robotic Arm, operated by Anna Kikina, is being used to conduct a survey of MS-22.

https://twitter.com/SpcPlcyOnline/status/1603247770051248128

Offline Rondaz

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Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #37 on: 12/15/2022 11:27 am »
The crew of the ISS confirmed reports of a leak after the damage to the Soyuz MS-22.

"Roskosmos": damage to the instrument-aggregate compartment of the "Soyuz MS-22" occurred on December 15.

12:06 12/15/2022 (updated: 13:04 12/15/2022)

MOSCOW, December 15 - RIA Novosti. Damage to the outer surface of the Soyuz MS-22 spacecraft occurred, according to preliminary data, on December 15, after a visual inspection, the crew confirmed a leak in the cooling system, the Roscosmos press service said .

"According to preliminary information, on Thursday, December 15, there was damage to the outer skin of the instrument-assembly compartment of the Soyuz MS-22 manned transport spacecraft," the corporation points out.

It is noted that the crew reported on the operation of the signaling device of the ship's diagnostic system, which showed a pressure drop in the cooling system.

"A visual inspection confirmed the leak, after which it was decided to interrupt the planned work on extravehicular activity by members of the crew of the Russian segment of the International Space Station Sergey Prokopiev and Dmitry Petelin," Roscosmos added.

To establish the causes of the incident, Russian cosmonaut Anna Kikina, using a camera on the ERA manipulator, photographed and filmed the outer surface of the ship. The data was transmitted to Earth , experts began to study the images, the press service noted.

According to Roskosmos, all systems of the ISS and the Soyuz spacecraft are operating normally, the crew is safe.

Earlier, from the negotiations of the ISS crew with ground services, it became known that Prokopiev and Petelin's spacewalk, which was supposed to begin at 5.20 Moscow time on December 15, was postponed due to depressurization of the cooling system of the Soyuz MS-22 spacecraft docked to the station. Roscosmos then added that the Soyuz diagnostic system did not allow the crew to go into space.

In the NASA broadcast , it was shown that fountains of technical liquid were pouring out of the Soyuz MS-22. Later, the astronauts photographed the problematic ship from the station's windows, and also examined it using cameras mounted on the ERA robotic arm. The crew sent the photographs to Earth for examination by specialists.

https://ria.ru/20221215/mks-1838828916.html

Offline Twark_Main

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Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #38 on: 12/15/2022 11:28 am »
Some reports (eg Ars) are speculating that the coolant is ammonia, presumably because it is used in the US orbital segment external loop (the internal loop uses water).

However note that the Russian designs have preferred to use silicone oil in the external loop (eg mentioned re:Mir on page 43, but AIUI the ROS currently uses it) and water/glycol for the internal loop (see page 7).

While ammonia will evaporate harmlessly (as it has in previous ISS ammonia leak incidents), silicone oil would not.   :-\

From page 20 of this document, there a description of the thermal control system on the Russian segment of the ISS, confirming the presumption that the ROS uses silicone oil in the external loop. Ammonia is mentioned as well.

Thanks for pulling the citation. I knew I had seen the info before, but I was focusing more on Soyuz. No presumption, just (fallible) memory. ;)

Isooctane sounds like good news. That should have lower risk of contamination vs. silicone oil. Since they leverage the supply chain of reference octane for testing gasoline, it should have very high purity.

Troublingly, other (very old, 1966!) information indicates that after the 7K-OK No. 1 fire they prefer non-flammable coolants on Soyuz. The article only mentions changing the inner loop (presumably, as it mentions water/glycol), but it gives a legitimate reason why they might favor silicone oil over isooctane. 
« Last Edit: 12/15/2022 11:58 am by Twark_Main »
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Offline Rondaz

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Re: Soyuz MS-22 coolant leak : 14/15 December 2022 UTC
« Reply #39 on: 12/15/2022 11:33 am »
Source: Soyuz MS-23 may launch earlier due to accident at Soyuz MS-22.

The Soyuz MS-23 spacecraft may be launched into space earlier due to depressurization of the Soyuz MS-22.

11:41 12/15/2022 (updated: 11:42 12/15/2022)

MOSCOW, December 15 - RIA Novosti. The launch of the next manned spacecraft Soyuz MS-23, scheduled for March 16, 2023, may be postponed to an earlier date due to an accident in the thermal control system of Soyuz MS-22, which is now part of the ISS, an informed source told RIA Novosti.

"In connection with the accident at Soyuz MS-22, Roscosmos specialists are considering the possibility of shifting the launch of Soyuz MS-23 to the left," the source said.

As another informed source noted to RIA Novosti, the accident in the thermal control system of the Soyuz MS-22 is serious and can lead to the failure of the ship's instruments - it will overheat on the sunny side and freeze in the Earth's shadow while orbiting as part of the ISS. Now Roscosmos specialists are considering priority measures to ensure an acceptable thermal regime for the operation of instruments on the ship.

Earlier, from the negotiations of the ISS crew with ground services, it became known that the spacewalk of Russian cosmonauts Sergei Prokopiev and Dmitry Petelin, which was supposed to begin at 5.20 Moscow time on December 15, was postponed due to depressurization of the cooling system of the Soyuz MS-22 spacecraft docked to the station. Roscosmos then added that the exit was canceled for technical reasons.

In the NASA broadcast, it was shown that fountains of technical liquid were pouring out of the Soyuz MS-22. Later, the astronauts photographed the problematic ship from the station's windows, and also examined it using cameras mounted on the ERA robotic arm. The crew sent the photographs to Earth for examination by specialists.

According to Roskosmos, before the opening of the exit hatch, according to the crew's report, information was received about the operation of the signaling device of one of the diagnostic systems of the Soyuz MS-22 spacecraft. They added that "a commission is working to analyze the causes of the incident, and based on the results of its work, decisions will be made on further actions of specialists on Earth and the crew of the Russian segment of the International Space Station."

https://ria.ru/20221215/kosmos-1838818090.html

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