[en] This document is a report of FY 1983 activities performed to meet task objectives of the Nevada Nuclear Waste Storage Investigations (NNWSI) Project Plan. Noteworthy accomplishments were: Canisters containing spent nuclear fuel assemblies were opened and the fuel retrieved. All canistered fuel assemblies which were utilized in the Spent Fuel Test at the Climax Granite Facility at the Nevada Test Site were returned to E-MAD. Detailed examinations were performed on fuel assemblies B02, D06, and D15 and their storage canisters. Fuel rods were removed from fuel assembly B02, visually inspected, and photographed through the Hot Bay periscope. Fuel assembly B02 was installed in the Fuel Temperature Test assembly. All fueled canisters at the E-MAD facility were transported from their storage locations to a Hot Bay work station for acquisition of canister gas samples to assure the continued integrity of the canisterized fuel assemblies. Modifications to the Plasma Arc Weld System improved performance of the welder and quality of the weld to the extent that test specimens, made during hands-on welding operations, met ASME code qualification requirements. Installation of the E-MAD exhaust air stack isokinetic sample nozzles and integration of the air monitoring systems into one computer console were completed. Quality Assurance surveillance/monitoring services were provided for NNWSI drilling activities on Yucca Mountain, one of the sites being considered for storage of nuclear waste. Training and assessment of the DOE/NV weapons programs' quality assurance programs were performed by WTSD-Nevada Operations Quality Assurance at DOE request