RELL and Dextre: locating external ammonia leaks on the ISS

Mechanism and experiments

RELL combines a mass spectrometer and vacuum pressure gauge. Dextre positions the tool outside the ISS to survey gas signals. NASA records successful ammonia-leak localisation and external storage in RiTS.

Test conditions and scope

RELL supplies detection and localisation results to identify the maintenance site. Repair is undertaken in subsequent maintenance work.

Papers and primary sources