Selecting and Testing Procedures and Equipment for Detecting Locations of Module Depressurization on the International Space Station (Bar) - BAR-1 (BAR-1) - 07.19.18

Overview | Description | Applications | Operations | Results | Publications | Imagery

ISS Science for Everyone

Science Objectives for Everyone
The Selecting and Testing Procedures and Equipment for Detecting Locations of Module Depressurization on the International Space Station - 1 (Bar-1) investigation supports International Space Station (ISS) safety by developing means and methods to detect the location of leaks. One of the causes of leakage can be micro-destruction of the ISS pressure hull. The goal of the Bar-1 investigation is the experimental verification of the performance and ergonomic properties of the Bar scientific equipment set, as well as the methods of leak locations in full-scale conditions using the database of the background conditions. This set of the Bar scientific equipment is designed to detect leak locations in the ISS Russian Segment (RS) modules, investigate the inner environment, and identify and control potentially hazardous zones of microdestructive growth in the ISS RS module pressure hull.
Science Results for Everyone
Leaky vessels are a problem, especially in space. This investigation tested ways of detecting loss of pressure and the existence of leaks in space station modules and working compartments. Results verified performance of the testing equipment and identified 56 potentially hazardous leaks, along with potential problem areas on the station’s pressure hull. Researchers created several databases to track these potentially hazardous leaks, problem areas, and the current condition of the station’s pressure hull. Additional data will be used to train crew members to identify surfaces where problems might develop.

The following content was provided by V V. Borisov, Oleg Alexeevich Saprykin, and is maintained in a database by the ISS Program Science Office.
Experiment Details


Principal Investigator(s)
V V. Borisov, TSNIIMASH, Korolyov, Russia
Oleg Alexeevich Saprykin, Central Research Institute of Machine Building (TSNIIMASH), Russia

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Sponsoring Space Agency
Russian Federal Space Agency (Roscosmos)

Sponsoring Organization
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Research Benefits
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ISS Expedition Duration
October 2007 - October 2008; April 2009 - September 2013

Expeditions Assigned

Previous Missions
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Experiment Description

Research Overview
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Space Applications
The goal of the Bar investigation is to provide safety for the ISS Russian Segment. The Bar equipment can be used as a prototype for detecting leak locations inside the ISS RS modules and, in combination with the database identifying areas of potential leaks, as a system for control of the ISS pressure hull condition.

Earth Applications
The Bar scientific equipment can be used in civic aviation and shipbuilding as a diagnostic tool to detect ship hull microdestruction, find corrosion growth on structural elements, and assess conformity to permissible acoustic levels.

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Operational Requirements and Protocols
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Decadal Survey Recommendations

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Results/More Information

The performance and ergonomic properties of the Bar equipment were verified, and 56 potentially hazardous zones of leaks were identified and examined. Additional zones of potential micro-destruction growth on the ISS pressure hull were also identified. Several databases were created to track the background physical environmental parameters in the potentially hazardous zones of leak and micro-destruction growth, the current state of the ISS pressure hull (including microbiological and corrosive conditions on the hull), and train cosmonauts to identify surfaces in which microorganism colonies have expanded.

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Results Publications

    Shubralova EV, Makolkin E, Deshevaya EA, Novikova ND, Polikarpov NA, Karimova SA, Taraeva TI.  Ultrasonic vibrations influence on microdistruction process. 2nd International Scientific Technical Conference, Saransk  ; 2006 98-101.

    Deshevaya EA, Shubralova EV, Borisov VV, Kononenko OD, Novikova ND, Polikarpov NA, Kotov OV.  Main Outcomes of Space Experiments "Bar" and "Expert" Implementation On-Board ISS. 35th Academic Readings on Cosmonautics, Moscow, Russia; 2011 January 577.

    Deshevaya EA, Shubralova EV, Novikova ND, Borisov VV, Kononenko OD, Polikarpov NA.  Testing and evaluation of a method for locating potentially hazardous sites of eventual microdestruction and detecting marks of ISS RS hull leakage. Acta Astronautica. 2011 May-Jun; 68(9-10): 1555-1559. DOI: 10.1016/j.actaastro.2010.10.006.

    Makov YN, Bychkov VB, Kononenko OD, Shubralova EV.  Low-Frequency Background Ultrasonic Problematics Applied to Measurement Necessity Study of Low-Frequency Background Ultrasonic Influence on Cosmonauts during Long-Term Presence on Space Vehicles. 35th Academic Readings on Cosmonautics, Moscow, Russia; 2011 577-579.

    Borisov VV, Lukjaschenko VI, Makolkin E, Shubralova EV, Shabelnikov VG, Deshevaya EA, Novikova ND, Krasnov NK.  Prospects of Applying the Remote Monitoring Devices for Detecting the Depressurization Locations at the International Space Station and for Checking its Structure. Kosmonavtika i Raketostroenie (Cosmonautics and Rocket Engineering). 2007; 49(4): 174-182.

    Deshevaya EA, Shubralova EV, Novikova ND, Polikarpov NA.  Results of intravehicular environment influence on pressure body state studies conducted in space experiments "Bar" and "Expert" on-board ISS in 2008-2011 . Space Forum 2011 Dedicated on 50th Anniversary for Yu. A. Gagarin Flight, Moscow, Russia; 2011 October 18-21

    Anfimov NA, Borisov VV, Lukjaschenko VI, Shubralova EV, Scherbakov EV, Novikova ND, Deshevaya EA.  Perspectives of Bar Telemetric Means Utilization for Leakage Detection and Monitoring of the ISS Construction Conditions. 55th International Astronautical Congress, Vancouver, Canada; 2004 October 4-8

    Borisov VV, Deshevaya EA, Kononenko OD, Shubralova EV, Novikova ND.  Development test of method of leakage spots detection on-board ISS. Kosmonavtika i Raketostroenie (Cosmonautics and Rocket Engineering). 2009(4): 144-152.

    Deshevaya EA, Novikova ND, Polikarpov NA, Borisov VV, Shubralova EV, Burlakova AA, Kononenko OD, Neznamova LO.  Results analysis of space experiments "Bar" and "Expert" conducted on-board ISS Russian segment: Perspectives of "Bar" equipment kit application for detection of potentially dangerous areas for ISS pressure body microdistruction processes extention. 6th International Aerospace Congress, Moscow, Russia ; 2010

    Deshevaya EA, Borisov VV, Kononenko OD, Shubralova EV.  Verification of the method for revealing of potentially dangerous zones of possible development of micro- destruction of the PS ISS pressurized structure ( based on the results of the 17-ISS mission). 17th IAA Humans in Space Symposium, Moscow, Russia; 2009 June 7-11 32.

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Ground Based Results Publications

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ISS Patents

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Related Publications

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Related Websites
Energia - Science Research on the ISS Russian Segment

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image NASA Image: ISS024E005604 - BAR experiment during Expedition 24. Choice and Development of Methods and Instruments to Detect the Location of a Loss of Pressurization of a Module on ISS (Bar).
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