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3. Engineering Review of Tanks & Equipment Covered by CalARP Program C:\TRICH\Jobs\4515582 Leprino Tracy\Report\Leprino Tracy CalARP 040221.docx 3-6 with L2x2 snubbers welded to the equipment frame (Figures 3-34 and 3-35) resulting in a DCR ratio of 0.56. Therefore, all of the cooling towers are adequately restrained. Cooling tower water piping is connected with flange couplers and Victaulic couplers, while the ammonia piping is welded. Earthquake experience data collected from past strong motion earthquakes have demonstrated that welded flange connectors, flexible Victaulic connectors and welded connectors are all seismically robust; thus, the piping was screened out as adequate. The HVAC chiller (HCH-1 and EX-601) appears adequately supported by steel saddles that are welded to the equipment support frame (Figures 3-36 and 3-37) with a resulting DCR ratio of 0.03. The adjacent diffusion tank (Figure 3-38) contains water and only contains ammonia if another piece of equipment becomes over pressurized and releases some ammonia. This tank serves to dilute any ammonia released from other equipment. This tank has an ammonia detector and an alarm to alert facility personnel if ammonia reaches this tank. The diffusion tank legs are adequately welded to the equipment frame (Figure 3-39) with a DCR ratio of 0.25. The two brine chillers, BCH-2 and BCH-3, are well anchored and have one of the only two ammonia detectors noted on the roof. These were installed in 2002. Intercooler Yard There are several tanks located in the Intercooler Yard outside the Main Engine Room. Secondary pieces of equipment such as pumps appear well anchored. Piping appears well supported by the steel platform and building walls; however, it is unknown whether any lateral support has been provided (Figure 3-40). In addition, several pipes from the Main Engine Room are connected to a pipe running between tanks IC-1 and HPR-1 (Figure 3-41). If these pipes are not properly braced in the Main Engine Room, they will increase the lateral forces on the two tanks. The Pump Recirculation Unit tank (PRU-1) (Figure 3-42) is supported by three wide flange steel legs that are adequately welded to a steel skid (Figure 3-43). Based on information provided by Leprino Foods, the tank is approximately one-third full of liquid ammonia. Based on observations, the steel skid is anchored to the foundation at four locations with ¾-inch to 1-inch diameter anchors (Figure 3-44). Based on available foundation drawings, the anchors are 1-inch diameter A307 anchors with 12-inch