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Replacement for Internal Active Thermal Control System Fluid Sample Bag Material
Technical Paper
2005-01-3078
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The International Space Station (ISS) Internal Active Thermal Control System (IATCS) uses a water based heat transport fluid with specific chemical parameters and additives for corrosion and microbial control. The fluid and hardware have experienced anomalies since activation of the United States Laboratory (USL), including chemical and possibly, microbial corrosion. The required sampling of the fluid has the crewmembers removing samples via an in-line sampling tool to perform real-time trace ammonia contamination tests using color change strips, and filling a 150 ml bag from each loop for the ground laboratory analyses. The former activity requires stable storage of the strips, and for the latter activity, it is highly desirable to return the ground sample as stable as possible.
This paper describes the process for materials selection, test methods/set-up, results, and final recommendation for a replacement outer bag. The test results showed the Pactech HD300 with an adhesive closure gave significant improvement over the barrier properties of the present polyethylene ziplock bag. New bags for use by the future ISS crews will be made of the Pactech HD300 material.
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Citation
Daugherty, R., Oehler, W., and Morton, R., "Replacement for Internal Active Thermal Control System Fluid Sample Bag Material," SAE Technical Paper 2005-01-3078, 2005, https://doi.org/10.4271/2005-01-3078.Also In
References
- SSP 30573, Rev. B, Space Station Program Fluid Procurement and Use Control Specification March 1 1998 “Heat Transport Fluid (Internal Active Thermal Control)”
- SAE 2001-01-2333 “Development of an Integrated Design Resolution Plan for the International Space Station Active Internal Thermal Control System Coolant Stability Concerns” Daugherty, Robert S. Chambliss Joe P.
- SSCN 2857, ITCS Coolant Sampling Tool
- SVME 5481 “Coolant Monitoring System, Bag Study” November 21 2003 Oehler William F.