NASA SSTD-8070-0013-WELD Rev. B, Classes of Welding Inspection, Revision (20-09-18). Active. Scope This John C. Stennis Space Center (SSC) standard (SSTD) sets forth the criteria for each class of inspection required for welding at SSC. Public Access. SSC.
Sterilization of medical devices - Microbiological methods - Part 2: Tests of sterility performed in the definition, validation and maintenance of a sterilization process