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[en] A demonstration using gamma ray absorption technique was carried out to diagnose malfunction such as tray missing, flooding, and weeping occurred in 23C-5 Extraction Vacuum Flash Strip Tower. The scan was conducted from the bottom until the top of the orientation of the director-source are (122o-308o) dan (122o- 270o). The results indicate that the tray number 1 and 3 were missing while weeping occurred in the space between tray 4,5,6,and 7. The results show that this technique can be used to diagnose malfunction occurred in the column on-line so it can help maintenance personnel in planning, the time scheduled and spare part for shutdown. Beside of that this technique can be developed to help column personnel's in adjusting the operation parameter to achieve optimum operation
Source
Suhadi, F.; Ismachin, Moch; Manurung, Simon (National Nuclear Energy Agency, Jakarta (Indonesia)) (eds.) (and others); Centre for Research and Development of Isotopes and Radiation Technolgy, National Nuclear Energy Agency, Jakarta (Indonesia); 295 p; ISBN 979-95709-5-6; 
; 23 Feb 2000; p. 225-227; Conference on the role of Isotopes and Radiation Technology to Make Prosperous Society; Peranan Teknologi Isotop dan Radiasi untuk Mensejahterakan masyarakat; Jakarta (Indonesia); 23-24 Feb 2000; Also available from from Center for Development of Informatics and Computation Technology, National Nuclear Energy Agency, Puspiptek Area, Fax. 62-21-7560923, PO BOX 4274, Jakarta (ID); 4 refs; tabs.; 3 figs.
; 23 Feb 2000; p. 225-227; Conference on the role of Isotopes and Radiation Technology to Make Prosperous Society; Peranan Teknologi Isotop dan Radiasi untuk Mensejahterakan masyarakat; Jakarta (Indonesia); 23-24 Feb 2000; Also available from from Center for Development of Informatics and Computation Technology, National Nuclear Energy Agency, Puspiptek Area, Fax. 62-21-7560923, PO BOX 4274, Jakarta (ID); 4 refs; tabs.; 3 figs.