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The Geothermal Loop Experimental Facility (GLEF) utilizes a four stage flash/binary process for the extraction of energy from a high temperature, high salinity, liquid-dominated resource. Since plant start-up in May, 1976, a substantial amount of information has been obtained I on the operation of the plant, components, brine and steam composition, production and injection wells, and the potential of the Niland Reservoir. This Quarterly Report discusses the general operation and activities of the GLEF during the period January, 1978 through March, 1978, in the GLEF Operations Section. The production and injection well encountered no / unusual difficulties as described in the Reservoir Operation Section. Scrubber performance tests were rerun this period and are discussed in the Testing Section. The Systems Chemistry Section discusses steam ph, conductivity, and chemical composition. Also discussed are brine and scale properties. In the Maintenance Section, pigging and component optimization efforts are discussed. The. injection pump difficulties and condenser plugging problems are detailed in the Special Problems Section. Section discusses the feasibility study for a 50 MWe plant and H2S abatement.

3.3.3 "Microseal" Lubricant-Coated Valves 3.3.4 Corrosion Resistant Coatings 3.3.5 Pinch Valves 3.3.6 C a v i t a t i o n Cleaning 4.0 SYSTEMS CHEMISTRY 4.1 Steam 4.2 B r i n e 4.3 B i n a r y and Cooling Water 4.4 S c a l e 4. 4. 1 S c a l e Samples Before Scheduled Shutdown 4.4.2 B r i n e System S c a l e

h i g h temperature, h i g h s a l i n i t y , l i q u i d-d o m i n a t e d resource.