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Raft River Geothermal Test Site

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Raft River Geothermal Test Site ( raft-river-geothermal-test-site )

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.ts' t plate to channel condensate from that section down to the next lower one, Three similar 112- by l-in. drainage slots were made in the bottom baffle to channel condensate to the liquid sump area because this bundle section was not served by a downcomer. 2.2.4 General vessel information I k o 1/16-in. Durabla asbestos gaskets, one between the water head and the tube sheet and one between the tube sheet and the shell, were used to prevent isobutsne or cooling-water leakage to the surroundings. 'henty- four 1-1/4-in. SA-193 J3-7 bolts with SA-194 2-H nuts made the flange and gasket assembly connections. Leak testing of the bundle after tube rolling operations showed that one U-bend between the third and fourth water-side passes had developed a leak. AnElliott l-in. brass tube plug was placed in each end of the defective U-section t o prevent leakage between the shell and tube sides of the condenser. This action effectively reduced the total working heat transfer area by 1.9% and increased the cooling-water velocity by 4.096 on the third and fourth waterside passes. The plugged bundle was then pressure-tested to 1.03 IPa (150 psi) withnofurther sigas of leak- age. Five gallons of Immunol, a rust inhibitor, was put in the shell before filling with water for hydrotesting. The shell was pressurized to 3.93 MPa (570 psi) with no evidence of leakage. The outside of the unit was given one primer coat (3.6 mils) of Speedhide Machinery and Equipment Primer and two finish coats (3.6 mils) of Lavar Semi-Gloss Machinery Enamel (Light Gray 23-61), Condenser construction was specified according t o the American Society of Mechanical Engineers (ASME) 1977 Code with ASME c e r tificate, national board registration, and Tubular Exchanger Manufacturers Association B standards. Estimated empty mass of the condenser was 2700 kg .(6000lbm), The vessel name plate read as follows: * 2 . ? u MAX PRES SHFZL 375 PSI 6' 300°F MAX TEMP SHELL 3000F @ 375 PSI MAXPBESF E100PSI 6' 3000F MAXTEMPTUBE3000F @ 100PSI BUILT 1980 SERIAL 256971 NATIONAL BOARD NO. 35139 ,562 TK .562 TK R=l5 - 13

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