NASA on Monday will decide on spacewalks to repair the thermal regulation system of the U.S. segment of the International Space Station (ISS), a source in the aerospace industry has told Interfax-AVN.

"The decision will be documented in the course of a teleconference with representatives of other countries participating in the ISS project," the source said.

He said that tentatively NASA is considering two main dates for spacewalks on December 19 and 21 and one standby - on December 23.

The source also said that a spacewalk is also planned for December 27 under the Russian flight program.

Due to problems in thermoregulation the operation of half of the equipment had to be suspended in the U.S. segment and energy consumption reduced in the Russian segment. The launch of the U.S. commercial vehicle Signus may also be put off until mid-January. So far its launch has been officially rescheduled from December 19 to 20. The final decisions on the launch date will also be made at the conference on Monday, the source said.

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