131 LA UR 03 5862 - National Nuclear Security Administration ...

the line to be taken out of service; the smaller volumes can now be transported from TA-21 to TA-50 or TA-53by truck. In 2002, the cross-country transfer line was mostly removed as part of land transfer.Also during 2001, nitrate reduction equipment was removed from service. Source evaluation had shown thatmore than 70 percent of the nitrates in the LANL radioactive liquid waste were found in less than 1 percent ofthe waste volume. These low-volume, high-nitrate liquid wastes are now segregated by waste generators andshipped to commercial hazardous waste treatment facilities. Table 2.14.1-1 provides details.Table 2.14.1-1. Radioactive Liquid Waste Treatment Facility Construction and ModificationsSWEIS RODPROJECTIONReplace influentundergroundstorage tanksaInstall a UF/ROprocessInstall nitratereductionequipment1998YEARBOOKTank farmupgraded byreplacing two ofthree undergroundstorage tanks withfour abovegroundsteel tanks in 1997.Process installed in1998.Equipmentinstalled in 1998.ACTUAL CONSTRUCTION AND MODIFICATION1999YEARBOOKProcess becameoperational in 1999.Installed anelectrodialysisreversal unit andbegan constructionof an evaporator tosupport UF/ROprocess (DOE1999d, DOE 1999e).Equipment becameoperational in 1999.2000YEARBOOK a 2001YEARBOOKDecontaminationoperations relocatedfrom BuildingTA-50-01 to TA-54.Lead decontaminationtrailer sent toArea G fordecommissioning.Nitrate reductionequipment wasremoved fromservice.Cross-countrytransfer linebetween TA-21and TA-50RLWTF taken outof service.Additional information on the impacts of the Cerro Grande Fire can be found in Section 2.14.4.2002YEARBOOKInstallation of ionexchange processto remove perchloratefrom theRLWTF effluent.Begin use ofmetal tank withsecondary containmentfor holdingprocess sludge.SWEIS Yearbook—2002 2-145