Cleaning Space Environment Simulation Chambers
Q. We are currently using Alconox® for cleaning of space environment simulation chambers. What do you recommend for a process to clean steel piping contaminated with DC-704 and Fryquel 550 and turbomolecular vacuum pump backing piping at JSC/NAS?
A. Alconox® detergent is the right choice, but vacuum pump grease is a very heavy difficult to remove residue. We recommend using very hot (170 deg F if possible) 2% Alconox® (20 g/L) followed by a very hot first rinse…
Nonvolatile residue inspection
Q. What is a nonvolatile residue inspection? A. Nonvolatile Residue Inspection (NVR) involves extraction of soil from a dirty surface into a solvent. The solvent is then evaporated onto a coupon of known weight. After the solvent is evaporated off the…