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

Table 5.4.3-1. Electrical Power Concerns and Related ProjectsCONCERNSSwitchgear and circuit breakers in several locationsare old and obsolete for the current system and need tobe replaced.Step-down transformers, which supply all the electricpower to the Laboratory’s main technical area (TA-03)and the Los Alamos town site, are old and do notprovide adequate redundancy. At TA-03, the 50-yearoldtransformers (30 megawatt capability each) serve a50 megawatt-plus load. Because a single transformercannot address the entire load, there is no redundancy.The two existing 115-kilovolt transmission lines thatcarry all the bulk electric power for the Laboratory andLos Alamos County terminate on a common bus andtherefore lack true redundancy.The program to monitor usage, power quality, and logevents does not cover all applicable buildings andneeds to be expanded.TA-03 transformers are 50 years old and undersized.There is no redundancy to service the load.Portions of the 13.8-kilovolt aerial distribution linesare not adequate to carry the anticipated loads in 2011.Replacing existing conductors with heavier conductorsand adding new circuits to support them are requiredto accommodate these future loads.RELATED PROJECTS–CY 2002 AND BEYONDSwitchgear in several locations at the Laboratory is currentlybeing replaced. The design, delivery, and installation ofswitchgear and equipment was completed for Sigma duringCY 2002.The WTA 115 to 13.8 MVA (56 MVAcapacity) transformer was put into service during 2002 and,when operational, will allow the replacement of the TA-03transformers. Several other transformers are on the InstitutionalProjects List.To address electrical power redundancy and availability, theproject list includes projects to uncross the 115-kilovolt linesand to add a backpressure turbine at the power plant.The Laboratory’s metering network program, which monitorsusage, power quality, and log events from a central computer,has been expanded to include over 70 buildings. Fifty buildingswill be added to the program each year.The WTA 115 to 13.8 million voltamperes (56 million volt amperes capacity) transformer was putinto service during 2002 and, when operational, will allow thereplacement of the TA-03 transformers.Replacement work has been done at DARHT, WETF, the SCC,and NISC and will continue with other projects.Table 5.4.3-2. Sanitary Waste Disposal System Concerns and Related ProjectsCONCERNSIndividual pipe segments throughout the Laboratory haveinadequate slopes and require a high degree of maintenanceto remove built-up solids. A minimum flow velocity of twofeet per second is required.RELATED PROJECTS–CY 2002 AND BEYONDTA-03/58 gravity line.Replace broken sewer lines.The Cooling Tower Water Conservation project, plannedfor late FY 2003 completion, will use solid wastewatersystems consolidation water instead of potable water for aset of cooling towers.5-18SWEIS Yearbook—2002