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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 3-10 as-built conditions of the anchorage are different than our assumptions, the result may vary. Glycol Room 2 The Glycol Chiller GCH-2 and AV-307 are well mounted to a support skid (Figures 3-77 to 3-79), which is not anchored to the slab-on-grade (Figure 3-80). Without adequate anchorage, the skid may slide, rock or topple during an earthquake resulting in possible damage to the equipment and piping. It is recommended that further analysis be performed to design anchorage for the skid. An additional skid is located in Glycol Room 2, which supports tanks and pumps (Figure 3-81). The equipment is well mounted to the skid; however, the skid is not anchored to the slab-on-grade (Figure 3-82). Without adequate anchorage, the skid may slide, rock or topple during an earthquake resulting in possible damage to the equipment and piping. It is recommended that further analysis be performed to design anchorage for the skid. Chiller Deck The two brine chillers (BCH-2 and BCH-3) are supported by steel saddles that are welded to the equipment support frame (Figures 3-83 and 3-84) with a resulting DCR ratio of 0.04. Piping in this area appears well supported by steel tube pipe supports. One of only two ammonia detectors noted on the roof is located here as well. The chillers were installed in 2002. Piping on the Roof Support of ammonia piping located on the roof appears marginal. Many pipe supports are supported by wood or metal sleepers that do not appear to be positively connected to the roof framing below (Figures 3-85 to 3-90). In addition, lateral bracing of the pipes to the supports was not visible. These potential deficiencies may result in pipes and/or supports sliding or toppling resulting in possible damage to the pipes. 3.3 Seismic Evaluation of Equipment There were no large tanks, such as flat bottom reservoirs for the ammonia process. The vessels are all small and inherently rugged, so analysis of the structural integrity of the tanks is not included in this review. All the ammonia is contained within the process