Open AccessCalculation of unmitigated release from reverse circulation drilling of a borehole three meters south of borehole 41-15-09 near SST 241-SX-115
Author(s) -
D L SCOTT
Publication year - 1999
Language(s) - English
Resource type - Reports
DOI - 10.2172/782338
Subject(s) - borehole , drilling , drill , vadose zone , geology , drill string , drill cuttings , petroleum engineering , petrology , geophysics , geotechnical engineering , drilling fluid , engineering , groundwater , mechanical engineering
To more fully characterize the vadose zone near Single Shell Tank 241-SX-115, another borehole will be drilled and sampled by using reverse circulation drilling equipment. Compressed air propels the drill and sweeps out cuttings. Dose calculations in this document are performed for an unmitigated airborne release from the drill string. Doses were found not to exceed TWRS risk guideline values