A new laser Raman analytical system using optical fibers and a multi-channel detection system with a liquid nitrogen cooled CCD detector made it possible to carry out remote analysis of hydrogen isotope gases in a process piping inside a glove box. With the system the current detection limit for T2 gas was 1.6 kPa. 0.6 kPa and 0.3 kPa for analytical periods of 1. 10 and 100 seconds.