Russian doctors found excess noise in the cabins of American and Russian modules on the International space station, hearing protection advised the astronauts to close the doors of the cabins during sleep.
Such information is given in the report of doctors of the Institute of biomedical problems RAS and the cosmonaut training Center, published in the journal “Manned space flight”.
“The cabins RS SM (service module Zvezda of the Russian segment of the ISS – ed.) sound levels exceeded the permissible values by 1.1 and 4.6 dB. Compared to previous measurements from March 10, 2019, the sound levels in the cabins increased by 1.8 decibels in the right quarters, and left the cabin practically has not changed,” the report said.
The doctors noted that the increase in noise is also recorded in the cabins of the American segment of the station, located in the Harmony module.
“Due to the fact that the sound levels in the ISS exceeded the permissible value, the crew recommended the use of individual means of noise protection (headphones with active noise reduction), and close the cabin door on a dream”, – reported in the report.
Doctors also noted an excess of the permissible noise levels at workplaces, in both Russian and American modules.
“Workplaces in CM RS sound levels exceed the allowable values of 1.0–5.1 dB with a maximum value in the area of the purification system of the atmosphere Air in the area of the medical Cabinet. Compared to previous measurements from March 10, 2019, the sound levels at workplaces CM by 1.1 and 3.5 dB”, – the report says.
Most of the noise on the ISS is from the running fans and equipment.