FTIR Class-A LVEA dry air header x2 and VEAX dry air header x1.
- Document #:
- LIGO-E2200220-v1
- Document type:
- E - Engineering documents
Other Versions:
- Abstract:
- FTIR Class-A LVEA dry air header x2 and VEAX dry air header x1.
POSSIBLE CONTAMINANT FROM KOBELCO AIR HANDLER:
The vendor that installed it says LLO has 25% glycol. Before glycol was put in the system, first they used Nitrate Borate as a corrosion inhibitor/cleaner. Also added Phenolphthalein (hot pink color) for identifying leaks. SDS: https://www.sunsourceproducts.com/library/documents/Cryo-Tek-100_MSDS.pdf ALOG (SUMMARY OF SITUATION):
https://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=59849 SAMPLE DETAILS:
Sample 1 was taken at the HAM7 port of entry for dry air. The KF fitting in front of the valve was removed after cleaning the area, then an FTIR sample was taken 2" in front of valve. Fittings were cleaned and reinstalled. Sample 2 was taken at the LVEA port of entry that's east of the bellows. The 6" CF was removed after cleaning, bellows covered with UHV foil, set aside, then an FTIR sample was taken of the inner pipe. Flanges were cleaned and reinstalled with a new 6" CF copper gasket. Sample 3 was taken at the VEAX dry air port of entry. The KF fitting in front of the bellows was removed after cleaning the area, covered with UHV foil, then an FTIR sample was taken of 2" in front of valve. Fittings were cleaned and reinstalled.
- Files in Document:
- Topics:
- Authors:
